CN103684923B - The method and the network equipment of a kind of packet loss measurement - Google Patents
The method and the network equipment of a kind of packet loss measurement Download PDFInfo
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- CN103684923B CN103684923B CN201310722868.8A CN201310722868A CN103684923B CN 103684923 B CN103684923 B CN 103684923B CN 201310722868 A CN201310722868 A CN 201310722868A CN 103684923 B CN103684923 B CN 103684923B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
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Abstract
The application provides the method and the network equipment of a kind of packet loss measurement, including：Section Point receives the first packet that first node is sent, first packet belongs to the first data packet group, first data packet group is the data packet group that first node is sent to Section Point, first packet includes the sequence number and the first data packet number of the first data packet group, and the first data packet number is used for the quantity for identifying the packet that the first data packet group is included；Section Point receives the second packet that first node is sent；When Section Point determines that the second packet is not belonging to the first data packet group, the second data packet number for belonging to the first data packet group received is counted；Section Point determines the number of dropped packets of the first data packet group according to the first data packet number and the second data packet number.Using the technical scheme of the embodiment of the present invention, be conducive under load balancing scene, improve the accuracy of packet loss measurement.
Description
Technical field
The present invention relates to the method and the network equipment of communication technical field, more particularly to a kind of measurement of packet loss.
Background technology
Multiprotocol label switching（Multiprotocol Label Switching, abbreviation MPLS）The fixed length using short
Label（label）Carry out encapsulated message packet.Label be a length fix, only have local significance short identifier, for only
Forwarding equivalence class belonging to one one packet of mark（Forwarding Equivalence Class, abbreviation FEC）.
In the prior art, transmitting terminal can send the packet loss detection message with solicited message to receiving terminal（Loss
Measurement Message, abbreviation LMM）, the local count value of giving out a contract for a project that transmitting terminal sends packet is contained in the LMM, when
Receiving terminal is received after the LMM, and one packet loss detection of generation is responded（Loss Measurement Reply, abbreviation LMR）Message,
And the LMR message is sent to the transmitting terminal.Include packet receiving count value when receiving the LMM in the LMR message.The transmission
End can be according to count value and the packet receiving count value progress packet loss measurement of giving out a contract for a project.However, under the scene of load balancing, for example：
Multiple packets that transmitting terminal is sent may due to via path it is different, cause packet to be later than the LMM and reach receiving terminal, from
And there is out of order problem, number of dropped packets measurement result can be caused inaccurate.
The content of the invention
The embodiment of the present invention provides the method and the network equipment of a kind of packet loss measurement, is conducive under load balancing scene,
Improve the accuracy of packet loss measurement result.
The first aspect of the present invention there is provided a kind of method that packet loss is measured, including：
Section Point receives the first packet that first node is sent, and first packet belongs to the first data packet group,
First data packet group is the data packet group that the first node is sent to the Section Point, and first packet is included
The sequence number and the first data packet number of first data packet group, first data packet number are used to identify first number
The quantity of the packet included according to package；
The Section Point receives the second packet that the first node is sent；
When the Section Point determines that second packet is not belonging to first data packet group, what statistics was received
Belong to the second data packet number of first data packet group；
The Section Point determines first number according to first data packet number and second data packet number
According to the number of dropped packets of package.
In the first possible implementation, according in a first aspect, also including：
When the Section Point receives the packet of first data packet group, first data are belonged to reception
The packet of package carries out counting statistics, correspondingly, true according to the data packet number of first data packet group of the statistics
Fixed second data packet number.
In second of possible implementation, with reference to first aspect and the first possible implementation, described first
In data packet group each data envelope be equipped with special tag, the special tag comprising first data packet group sequence number and
First data packet number.
In the third possible implementation, according to second of possible implementation, in addition to：
When the Section Point judges that second packet does not encapsulate the special tag, second number is determined
First data packet group is not belonging to according to bag, or,
When the Section Point judges the sequence number and the first data of the second data packet group belonging to second packet
When the sequence number of package is different, determine that second packet is not belonging to first data packet group.
In the 4th kind of possible implementation, with reference to first aspect, the first possible implementation, second of possibility
Implementation and the third possible implementation, it is described when the Section Point determines that second packet is not belonging to institute
After stating the first data packet group, in addition to：
The Section Point starts specific duration timer；
After the timer expires, what the Section Point statistics was received belongs to the described of first data packet group
Second data packet number.
In the 5th kind of possible implementation, with reference to first aspect, the first possible implementation, second of possibility
Implementation, the third possible implementation and the 4th kind of possible implementation, the Section Point is according to described
One data packet number and second data packet number determine the number of dropped packets of first data packet group, specifically include：
The number of dropped packets of correspondence first data packet group is Z=X-Y;
Wherein, the X represents the first data packet number, and the Y represents the second data packet number, and the Z represents described and lost
Bag number.
The second aspect of the present invention there is provided a kind of method that packet loss is measured, including：
First node determines the first data packet number included in the first data packet group；
The first node sends the first packet in first data packet group, first data to Section Point
Bag includes the sequence number and the first data packet number of first data packet group, and first data packet number is described for identifying
The quantity for the packet that first data packet group is included, first data packet group is that the first node is sent out to the Section Point
The data packet group sent；
After the packet in first data packet group is sent, the first node is sent to the Section Point
Second packet, second packet is not belonging to first data packet group.
In the first possible implementation, according to second aspect, the first node sends first to Section Point
Before the first packet in data packet group, in addition to：
The first node is packaged using special tag to first packet, and the special tag is comprising described
The sequence number of first data packet group and first data packet number.
In second of possible implementation, according to the first possible implementation, in first data packet group
Each packet be packaged with the special tag.
The third aspect of the present invention there is provided a kind of Section Point, including：
Receiving unit, the first packet for receiving first node transmission, first packet belongs to the first data
Package, first data packet group is the data packet group that the first node is sent to the Section Point, first data
Bag includes the sequence number and the first data packet number of first data packet group, and first data packet number is described for identifying
The quantity for the packet that first data packet group is included；
The receiving unit, is additionally operable to receive the second packet that the first node is sent；
Statistic unit, during for determining that second packet is not belonging to first data packet group, what statistics was received
Belong to the second data packet number of first data packet group；
Computing unit, for determining first number according to first data packet number and second data packet number
According to the number of dropped packets of package.
In the first possible implementation, according to the third aspect, in addition to：
Counting unit, counting statistics is carried out for the packet for belonging to first data packet group to reception, correspondingly,
Second data packet number is determined according to the data packet number of first data packet group of the statistics.
In second of possible implementation, with reference to the third aspect and the first possible implementation, described first
In data packet group each data envelope be equipped with special tag, the special tag comprising first data packet group sequence number and
First data packet number.
In the third possible implementation, according to second of possible implementation, in addition to：
Determining unit, for when judging that second packet does not encapsulate the special tag, determining described second
Packet is not belonging to first data packet group, or,
When the sequence number and the sequence number of the first data packet group that judge the second data packet group belonging to second packet
When different, determine that second packet is not belonging to first data packet group.
In the 4th kind of possible implementation, with reference to first aspect, the first possible implementation, second of possibility
Implementation and the third possible implementation, in addition to：
Timing unit, for starting specific duration timer；
The statistic unit is specifically for after the timer that the timing unit starts expires, it is determined that receiving
Belong to second data packet number of first data packet group.
In the 5th kind of possible implementation, with reference to first aspect, the first possible implementation, second of possibility
Implementation, the third possible implementation and the 4th kind of possible implementation, the computing unit specifically for：
The number of dropped packets of correspondence first data packet group is Z=X-Y;
Wherein, the X represents the first data packet number, and the Y represents the second data packet number, and the Z represents described and lost
Bag number.
The fourth aspect of the present invention there is provided a kind of first node, including：
Determining unit, for the first data packet number for determining to be included in the first data packet group；
Transmitting element, for sending the first packet in first data packet group, first number to Section Point
The sequence number and the first data packet number of first data packet group are included according to bag, first data packet number is used to identify institute
State the quantity for the packet that the first data packet group is included, first data packet group is the first node to the Section Point
The data packet group of transmission；
The transmitting element, is additionally operable to after the packet in first data packet group is sent, to described second
Node sends the second packet, and second packet is not belonging to first data packet group.
In the first possible implementation, according to fourth aspect, in addition to：
Encapsulation unit, for the transmitting element to Section Point send the first data packet group in the first packet it
Before, first packet is packaged using special tag, the special tag includes the sequence of first data packet group
Row number and first data packet number.
In second of possible implementation, according to the first possible implementation, the encapsulation unit is additionally operable to
To special tag described in each packet encapsulation in first data packet group.
In the above-mentioned technical solutions, the Section Point receives the first packet that first node is sent, first data
Bag belongs to the first data packet group, sequence number of first packet comprising first data packet group and the first number-of-packet
Amount, first data packet number is used for the quantity for identifying the packet that first data packet group is included, when the second section
When point receives the second packet for being not belonging to first data packet group, what statistics was received belongs to first data packet group
The second data packet number, the Section Point determines institute according to first data packet number and second data packet number
The number of dropped packets of the first data packet group is stated, is conducive under load balancing scene, the accuracy of packet loss measurement result is improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to do one simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart schematic diagram of the method for packet loss measurement provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart schematic diagram of the method for packet loss measurement provided in an embodiment of the present invention；
Fig. 3 is a kind of first node and Section Point interaction diagrams schematic diagram provided in an embodiment of the present invention；
Fig. 4 is MPLS special tags form schematic diagram provided in an embodiment of the present invention；
Fig. 5 switches schematic diagram for the state of Section Point provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of Section Point provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation of Section Point provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of Section Point provided in an embodiment of the present invention；
Fig. 9 is a kind of structural representation of Section Point provided in an embodiment of the present invention；
Figure 10 is a kind of structural representation of first node provided in an embodiment of the present invention；
Figure 11 is a kind of structural representation of first node provided in an embodiment of the present invention；
Figure 12 is a kind of structural representation of Section Point provided in an embodiment of the present invention；
Figure 13 is a kind of structural representation of first node provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is a kind of flow chart schematic diagram of the method for packet loss measurement provided in an embodiment of the present invention.As shown in figure 1, this
The method of the packet loss measurement of embodiment, comprises the following steps：
Step S100, Section Point receive the first packet that first node is sent, and first packet belongs to first
Data packet group, first data packet group is the data packet group that the first node is sent to the Section Point, described first
Packet includes the sequence number and the first data packet number of first data packet group, and first data packet number is used to identify
The quantity for the packet that first data packet group is included.
Step S101, the Section Point receive the second packet that the first node is sent.
Step S102, when the Section Point determines that second packet is not belonging to first data packet group, system
Count the second data packet number for belonging to first data packet group received.
Step S103, the Section Point determine institute according to first data packet number and second data packet number
State the number of dropped packets of the first data packet group.
The executive agent of each step of the present embodiment is Section Point, in practice, during the Section Point can be mpls domain
LSR (Label Switched Router, LSR), the Section Point can be label switched path
（Label Switched Path, abbreviation LSP）On arbitrary node in addition to head node, you can be intermediate node on LSP or
Tail node.
Further, because above-mentioned first packet includes the sequence number and the first data packet number of the first data packet group,
Therefore, the first data packet group that Section Point can be according to belonging to the sequence number of above-mentioned first data packet group determines the first packet
And the quantity of above-mentioned first data packet group.
Alternatively, each data envelope is equipped with special tag in first data packet group, and the special tag includes institute
State the sequence number and first data packet number of the first data packet group.As a kind of feasible embodiment, Section Point can
To be encapsulated in the special tag on the first packet by parsing, the sequence number and the first number-of-packet of the first data packet group are obtained
Amount.For example：The special tag can be MPLS label, then, Section Point can parse the MPLS with the method for prior art
Label, and therefrom obtain the sequence number and first data packet number of the first data packet group that above-mentioned special tag is included.
Alternatively, it is described to belonging to for reception when the Section Point receives the packet of first data packet group
The packet of first data packet group carries out counting statistics, correspondingly, according to the data of first data packet group of the statistics
Bag quantity determines second data packet number.
As another feasible embodiment, Section Point can also read directly carried in the first packet special
Mark, the sequence number and first data packet number of first data packet group are obtained by above-mentioned special identifier.Need
Illustrate, the concrete mode that Section Point obtains special identifier from the first packet does not make limitation herein, for example：Second
Node can arrange good position with first node, and read the special identifier of the first packet in appointed position, can also be direct
The first packet is traveled through, special identifier is therefrom obtained.
The first node is continuously transmitted to the packet in first data packet group, i.e., described first node hair
Send after first packet in first data packet group, continuously transmitted other data in first data packet group
Bag.Correspondingly, the Section Point is receiving first data of first data packet group that the first node is sent
Bao Hou, can continuously receive other packets in first data packet group.
After the second packet that the Section Point receives first node transmission, Section Point is it needs to be determined that above-mentioned second
Whether packet belongs to the first data packet group.When the Section Point judges that second packet does not encapsulate the special mark
During label, determine that second packet is not belonging to first data packet group, or, when the Section Point judges described second
When the sequence number of the second data packet group belonging to packet is different from the sequence number of the first data packet group, second data are determined
Bag is not belonging to first data packet group.
Specifically, if the second packet is not belonging to the first data packet group, Section Point can be according to above-mentioned first data
The sequence number of package, counts the second data packet number of the packet for belonging to first data packet group received.
After above-mentioned second data packet number is determined, Section Point can be according to above-mentioned first data packet number and second
Data packet number, determines number of dropped packets of the packet in first data packet group on the Section Point.
In the above-described embodiments, the Section Point receives the first packet that first node is sent, first packet
Belong to the first data packet group, first packet includes the sequence number and the first data packet number of first data packet group,
When the Section Point receives the second packet for being not belonging to first data packet group, what statistics was received belongs to described
Second data packet number of the first data packet group, the Section Point is according to first data packet number and second data
Bag quantity determines the number of dropped packets of first data packet group, because the Section Point is only not belonging to described first receiving
During second packet of data packet group, packet loss detection is just carried out, is conducive under load balancing scene, improve packet loss measurement
As a result accuracy.
Fig. 2 is a kind of flow chart schematic diagram of the method for packet loss measurement provided in an embodiment of the present invention.As shown in Fig. 2 this
The method of the packet loss measurement of embodiment, comprises the following steps：
Step S200, first node determine the first data packet number included in the first data packet group.
Step S201, the first node send the first packet in first data packet group, institute to Section Point
Sequence number and the first data packet number that the first packet includes first data packet group are stated, first data packet number is used
In the quantity for identifying the packet that first data packet group is included, first data packet group is the first node to described
The data packet group that Section Point is sent.
Step S202, after the packet in first data packet group is sent, the first node is to described
Two nodes send the second packet, and second packet is not belonging to first data packet group.
The executive agent of each step is first node in the present embodiment, and in practice, the first node can be mpls domain
In LSR, it can be the arbitrary node in addition to tail node on LSP, i.e., it can be to determine head node or middle node on LSP
Point.
In the present embodiment, first node can not send LMM message to measure number of dropped packets to Section Point, but can be straight
The first transmitted packet was connected to identify in the first data packet group and the data packet group belonging to the packet
One data packet number.
Alternatively, before the first node sends the first packet in the first data packet group to Section Point, also wrap
Include：
The first node is packaged using special tag to first packet, and the special tag is comprising described
The sequence number of first data packet group and first data packet number.Each packet in first data packet group is encapsulated
There is the special tag.
The first node is continuously transmitted to the packet in first data packet group, i.e., described first node hair
Send after first packet in first data packet group, continuously transmitted other data in first data packet group
Bag.Correspondingly, the Section Point is receiving first data of first data packet group that the first node is sent
Bao Hou, can continuously receive other packets in first data packet group.
After the second packet that the Section Point receives first node transmission, Section Point is it needs to be determined that above-mentioned second
Whether packet belongs to the first data packet group.When the Section Point judges that second packet does not encapsulate the special mark
During label, determine that second packet is not belonging to first data packet group, or, when the Section Point judges described second
When the sequence number of the second data packet group belonging to packet is different from the sequence number of the first data packet group, second data are determined
Bag is not belonging to first data packet group.
Specifically, if the second packet is identical with the type of the first packet, i.e. the second packet includes the described first number
According to the sequence number and first data packet number of package, then now first node only needs weight when sending the second packet
Step S200 and step S201 is performed again；Do not included if the second packet is normal data packet, i.e. second packet
The sequence number of first data packet group and first data packet number, now first node can perform right in the prior art
The forwarding operation of normal data packet.
Because the first packet carries the sequence number and first data packet number of first data packet group, therefore,
Section Point according to the first packet and the second packet received, can determine the of its first data packet group received
Two data packet numbers, and determine according to above-mentioned first data packet number and the second data packet number the packet loss of the first data packet group
Number.
Above-described embodiment is by sending the first packet comprising sequence number and the first data packet number so that Section Point
The first data packet number of the first data packet group and the first data packet group where the first packet can be obtained, and according to reception
The first packet and the second packet, determine the number of dropped packets of the first data packet group, due to the Section Point only receive
During to second packet for being not belonging to first data packet group, packet loss detection is just carried out, is conducive in load balancing
Under scape, the accuracy of packet loss measurement result is improved.
Fig. 3 is a kind of first node and Section Point interaction diagrams schematic diagram provided in an embodiment of the present invention.Such as Fig. 3 institutes
Show, the interaction flow comprises the following steps：
Step S300, first node determine the first data packet number included in the first data packet group.
In above-mentioned steps, executive agent is first node, in practice, and the node can be the LSR in mpls domain.
Specifically, the first packet can include the sequence number of first data packet group belonging to it and first data
Bag quantity.First data packet number can be identified in the following manner：
First packet counts x comprising transmission, then, optionally, give out a contract for a project quantity of the first node in every wheel statistics, i.e.,
Above-mentioned first data packet number can be expressed as 10x+1If representing x with 8 bits, then first node, which often takes turns statistics, at least to be needed
10 messages are sent, 10 are at most sent256Individual message, the quantity of giving out a contract for a project that first node is often taken turns in statistics is the first number-of-packet
Amount.First node can calculate the sent in every wheel statistics automatically according to the uninterrupted of system configuration and statistics duration
The transmission that one packet is included is counted.For example, it is assumed that the uninterrupted of system is 10,000 per second, the statistics durations of system configuration of bag
For 30 seconds, that is to say, that now a wheel statistics needs to pass 300,000 packets.So, first node is according to 10x+1=300000 meters
X value is calculated, so as to just can determine that the transmission that the first packet is included is counted.In addition, in practice, first node is in every wheel system
The first packet of transmission can be counted in meter, with the number for the first packet for recording its transmission, when the first data
The number of bag reaches 10x+1When individual, first node is that the first packet that can determine that wheel statistics is sent.
It should be noted that because in every wheel statistics, above-mentioned first data packet number is 10x+1, but in practice, first
Node is possible to the first packet sent less than 10x+1It is individual, that is to say, that, although the first packet bag that first node is sent
The transmission contained is counted as x, but the first packet number of its actual transmission is n, and the n values are less than 10x+1It is individual, if now received
The Section Point of first packet counts the first packet for determining that first node is sent in wheel statistics according to above-mentioned transmission
Number, and the number of dropped packets of the first data packet group is calculated, first node is not sent 10 will be takeed forx+1- n the numbers to lose
According to bag, so as to cause number of dropped packets not statistical uncertainty really.Optionally, first node can oneself construction 10x+1- n invalid packets,
So that the sum of its first packet sent is 10x+1, and by above-mentioned 10x+1Individual first packet is sent.With first segment
Point is needed exemplified by 300,000 the first packets of hair, such as now with 10x+1=300000 calculate x value, due to no positive integer energy
Enough meet above-mentioned equation, therefore an approximate integer solution can be taken, such as x is equal to 5, now 10x+11,000,000 packets are represented,
But first node needs the sum of the first packet sent there was only 300,000, optionally, first node can oneself construction 70
Ten thousand invalid packets so that its total data bag number sent is 1,000,000, and above-mentioned 1,000,000 packets are sent out
Go.Specifically, first node sends above-mentioned 300,000 the first packets first, and when sending first the first packet, just
Start a timer, if during timer arrival time, the first packet number that first node is sent is less than 1,000,000, then
Now first node oneself can construct 700,000 invalid packets, and transmit it out.Because first node have sent altogether
1000000 packets, therefore the transmission that can be included according to the first packet received of Section Point counts x=5, obtain the
First data packet number of the first data packet group that one node is sent is 1,000,000.
In addition, 10x+1Simply first node and a kind of counting mode of Section Point agreement, not necessarily make in practical operation
The formula is used, calculation formula known to other sending and receiving ends can also be used.
Step S301, first node are packaged using special tag to the first packet.
Specifically, first node can be packaged with special tag to the first packet, also, can in the special tag
With the sequence number comprising the first data packet group and the first data packet number.Optionally, first node can be the first data packet group
In each packet encapsulate above-mentioned special tag.Different types of special tag can have different forms, with MPLS
Exemplified by label：MPLS label length is fixed, for the forwarding equivalence class belonging to one packet of unique mark（Forwarding
Equivalence Class, abbreviation FEC）.The length of usual label is 4 bytes, i.e. 32 bits., can in the embodiment of the present invention
Redefined with 32 bits that the special tag to existing MPLS types is included, Fig. 4 carries for the embodiment of the present invention
The MPLS special tag form schematic diagrams of confession.As shown in figure 4, the special tag can include：
Special tag value（Special Label）, the special tag value can be a Hold sticker；
Sequence number（Seq）, the sequence number for carrying first data packet group；
Stack bottom is marked（S）, stack bottom mark；
Send and count（Tx count）, for identifying first data packet number.
Wherein, special tag value can be used to indicate that whether current label is special tag, and its length is 20 bits,
When actual use, the value can take MPLS label storehouse to encode in these Hold stickers of 4-15 specified in i.e. RFC3032, still
The label not taken by other agreements.As long as it should be noted that first node is sent to the packet quilt of Section Point
Above-mentioned special tag is encapsulated, no matter whether they belong to same data packet group, and their special tag value is all identical；Sequence
Row number is used to identify the first data packet group belonging to the first packet, and its length is 3 bits, the packet of different pieces of information package
Packaged MPLS label can correspond to different sequence numbers, and first node has been sent after one group of packet, can be by this sequence
Number incremental processing is done, in order to distinguish the different pieces of information package where different pieces of information bag；Stack bottom mark can be fixed with prior art
Justice is identical, represents that MPLS supports the hierarchy of label, that is, supports multilayer labels, and its length is 1 bit, the table when value is 1
Show it is bottom label；The first data packet number for counting and can be used for identifying the first data packet group is sent, its length is 8 ratios
It is special.
Step S302, first node send the first packet in the first data packet group to Section Point.
The step is identical with step S201 description, will not be repeated here.
Step S303, first node send the second packet to Section Point.
Specifically, first node is after the first packet in having sent the first data packet group, can also be to Section Point
The second packet is sent, second packet is simultaneously not belonging to first data packet group.
First node, can according to actual needs, to above-mentioned second after the packet in having sent the first data packet group
Packet carries out two kinds of different processing.A kind of is to terminate as the second packet encapsulation special tag in the second data packet group,
And simply complete to forward according to the LSP paths of determination, the second packet now does not encapsulate the normal number of special tag as
According to bag, this processing mode is applied to count on demand, i.e., disposable statistics, that is, system are only needed to the first data packet group
Number of dropped packets is counted；Another situation is, if the statistical demand of system configuration counts for continuity, that is, needs progress many
Wheel statistics, then, first node is after above-mentioned first data packet group is distributed next time it is necessary to being prepared to count.Optionally,
First node can do the incremental processing of circulation to the sequence number that the second packet of the second data packet group is included, and repeat above-mentioned step
Rapid S300~S302 sends the second packet.For example, first node is first packet encapsulation sequence in the first data packet group
Row number is 0 special tag, then in the packet encapsulation special tag for the second data packet group, just by second packet
The sequence number increments of packet in group are 1, when also multiple data packet groups, also do similar pass to every group of follow-up packet
Increasing is handled.It should be noted that due to the bit of Serial No. 3 of special tag, therefore this 8 differences of 0-7 can only be represented
Numeral, therefore, after sequence number increments are to 7, during packet encapsulation special tag of the first node in for follow-up data package,
Sequence number need to be set to 0, above procedure is the circulation increasing process of sequence number again.In addition, not limiting first segment here
The number for the data packet group that point is sent, when sending multiple different data packet groups, Section Point can be to each data packet group
In packet repeat the above steps S300~S302 operation.
Step S304, Section Point receive the first packet that first node is sent.
Step S305, Section Point receive the second packet that first node is sent.
Step S306, Section Point judge whether the second packet belongs to the first data packet group.
When the Section Point judges that second packet does not encapsulate the special tag, second number is determined
First data packet group is not belonging to according to bag, or, when the Section Point judges the second number belonging to second packet
According to the sequence number of package it is different from the sequence number of the first data packet group when, determine second packet be not belonging to it is described first number
According to package.
Step S307, Section Point start specific duration timer, after timer expires, and Section Point statistics is received
The second data packet number for belonging to the first data packet group.
Because the different pieces of information bag that first node is sent not necessarily reaches Section Point according to the order of transmission, so second
Node needs to wait for a period of time to receive the packet postponed in same data packet group, more accurately to measure number of dropped packets.
Optionally, Section Point can start the timer of a specific duration, if before timer expires, is not connected to
The packet in the first data packet group belonging to one packet, then upon expiry of the timer, count the first packet received
Second data packet number of group.
As an example it is assumed that being started counting up for the sequence number for identifying the first data packet group from 0, Section Point is first connected to one
The packet of a little Serial No. 0, that is, belong to the first packet of the first data packet group, and have a Serial No. 1
The second packet reach, that is, belong to the packet of the second data packet group, or have again one without encapsulation special tag
The second packet reach, according to step S306 description, Section Point need compare its receive the second packet and first
Whether the sequence number of packet is identical, if the second packet is the packet of Serial No. 1, due to the sequence number of the first packet
It is 0, therefore, Section Point can start a timer, after timer expires, what Section Point statistics was received belongs to the
Second data packet number of one data packet group.
Specifically, timer is the time in order to allow Section Point to wait one section of specific duration, if in above-mentioned special time
The packet of the first data packet group is not received inside, then when timer expires, the first data are directed in read step S304
The second data packet number in the first data packet group that the statistical counting value of package, as Section Point are received.
Further, if when timer is also not yet due, Section Point have received again has identical with the first packet
The packet of sequence number, such as Section Point are in the second packet for receiving Serial No. 1 or the second of unencapsulated special tag
After packet, the first packet of a Serial No. 0 is received again, and now, according to step S304 description, Section Point can be right
First packet is counted, that is, adds 1 by the statistical counting value for the first data packet group, meanwhile, this can be determined
When device close.If Section Point receives the 3rd packet afterwards again, the 3rd packet belongs to the first data packet group, then the
One node still repeats above-mentioned counting operation, is not packet in the first data packet group or special without encapsulation until being connected to one
The normal data packet of different label, now Section Point restart above-mentioned timer, and repeat step S307 operation.
It should be noted that the specific duration of above-mentioned timer is according to actual conditions, such as actual network congestion shape
The settings such as condition, such as 60 seconds or 120 seconds.
Step S308, Section Point determine the first data packet group according to the first data packet number and the second data packet number
Number of dropped packets.
Specifically, Section Point obtains the first data packet group is included first in being counted from the transmission of the first packet
Packet amount, also, by step S307 operation, Section Point can determine the second number of its first data packet group received
According to bag amount, therefore, the number of dropped packets of corresponding first data packet group is：
Z=X-Y, wherein, X represents the first data packet number, and Y represents the second data packet number, and Z represents number of dropped packets.
For several different working conditions of the clearer explanation Section Point, Section Point is present embodiments provided
State switching figure.As shown in figure 5, the state of Section Point has four kinds：Original state, statistic behavior, wait state and end shape
State.
Specifically, original state represents Initial condition when Section Point is not enabled on packet loss statistical function, work as Section Point
When receiving the first packet for encapsulating special tag of the first data packet group, it can start counter, and enter statistic behavior,
, can be by if the Section Point receives sequence number and the first packet identical packet when Section Point is in statistic behavior
Add 1 corresponding to the packet receiving counter of first data packet group；If the second second data packet sequence row number received and first number
It is different according to the sequence number of package, the timer for the first data packet group can be started, into wait state, this pending state refers to
Section Point can wait for a period of time, the packet in the first data packet group to receive delay.Waited when Section Point is in
During state, if timer is also not yet due, and Section Point have received the packet in the first data packet group, then it can be from wait
State switches to statistic behavior, and then the data bulk of first data packet group to receiving is counted.If timer expires, that
, Section Point can enter done state from wait state, and carry out reporting for statistical result in the state, that is, report and actually connect
The data packet number for the first data packet group received.It should be noted that statistic behavior, wait state and done state can lead to
The operation of the artificial statistical function for removing the enable node is crossed, and returns to original state.
Optionally, in practical operation, because the present embodiment does not limit tail node of the Section Point as LSP, therefore,
The upper arbitrary nodes in addition to first node of LSP all can be as Section Point, thus such node can be carried out the survey of number of dropped packets
Amount, that is to say, that using the scheme of the embodiment of the present invention, not only it is known that on LSP paths from first node to arbitrary node
Between number of dropped packets, the second data packet number that can also be reported by any two node subtracts each other, and obtains between any two node
Number of dropped packets.
Furthermore, it is possible to by increasing in the network area where above-mentioned first node to the LSP paths between Section Point
One equipment does public server, or uses existing network management system, to realize the statistical report of Section Point.Specifically,
After all Section Points for enabling statistical function terminate in epicycle statistics, all the second data packet number each counted is converged
Always on public server or webmaster.The enhancing of this function can facilitate user to navigate to the faulty section of specific packet loss.
Step S309, Section Point decapsulate the special tag of the first packet.
Optionally, Section Point carries out statistical report except that can enable statistical function, can also enable deletion function, be
First packet decapsulates the special tag.
If specifically, Section Point enables deletion function, then, the Section Point just above-mentioned determination LSP path is whole
Point, that is to say, that after the first packet for having special tag reaches above-mentioned Section Point, the Section Point can not only be united
Meter is reported, at the same time, and it can also remove the special tag of the first packet, follow-up along determination LSP forwardings to cause
Data packet recovery into normal encapsulation, no longer carry special tag.
In embodiments of the present invention, the Section Point receives the first packet that first node is sent, first data
Bag belongs to the first data packet group, sequence number of first packet comprising first data packet group and the first number-of-packet
Amount, when the Section Point receives the second packet for being not belonging to first data packet group, what statistics was received belongs to
Second data packet number of first data packet group, the Section Point is according to first data packet number and described second
Data packet number determines the number of dropped packets of first data packet group, due to the Section Point only receive be not belonging to it is described
During second packet of the first data packet group, packet loss detection is just carried out, is conducive under load balancing scene, improve packet loss
The accuracy of measurement result.
Fig. 6 is a kind of structural representation of Section Point provided in an embodiment of the present invention.As shown in fig. 6, the Section Point
600 include：Receiving unit 610, statistic unit 611 and computing unit 612.The Section Point 600 can be Fig. 1 or Fig. 2 or Fig. 3
Section Point in corresponding embodiment.
Receiving unit 610, the first packet for receiving first node transmission, the first packet belongs to the first packet
Group, the first data packet group is the data packet group that first node is sent to Section Point, and the first packet includes the first data packet group
Sequence number and the first data packet number, the first data packet number is used to identify the number of packet that the first data packet group is included
Amount；
Receiving unit 610, is additionally operable to receive the second packet that first node is sent；
Statistic unit 611, during for determining that the second packet is not belonging to the first data packet group, count receive belong to the
Second data packet number of one data packet group；
Computing unit 612, for determining the first data packet group according to the first data packet number and the second data packet number
Number of dropped packets.
Further, each data envelope is equipped with special tag in the first data packet group, and special tag includes the first data
The sequence number of package and the first data packet number.
Further, statistic unit 611 is specifically for after the timer that timing unit starts expires, it is determined that receiving
The second data packet number for belonging to the first data packet group.
Further, computing unit 612 specifically for：
The number of dropped packets of the first data packet group of correspondence is Z=X-Y;
Wherein, X represents the first data packet number, and Y represents the second data packet number, and Z represents number of dropped packets.
Alternatively, referring to Fig. 7, the Section Point 600 can also include：
Counting unit 710, counting statistics is carried out for the packet for belonging to the first data packet group to reception, correspondingly,
Second data packet number is determined according to the data packet number of the first data packet group of statistics.
Alternatively, referring to Fig. 8, the Section Point 600 can also include：
Determining unit 810, for when judging that the second packet does not encapsulate special tag, determining that the second packet does not belong to
In the first data packet group, or, when the sequence number for judging the second data packet group belonging to the second packet and the first data packet group
Sequence number it is different when, determine that the second packet is not belonging to the first data packet group.
Alternatively, referring to Fig. 9, the Section Point 600 can also include：
Timing unit 910, for starting specific duration timer, after timer expires, it is determined that what is received belongs to
Second data packet number of one data packet group.
In embodiments of the present invention, the first data packet group sequence number and the first data packet number are included by sending
The first packet so that Section Point 600 can obtain the first data packet group and the first packet where the first packet
First data packet number of group, and according to the first packet and the second packet of reception, determine the packet loss of the first data packet group
Number, because the Section Point 600 is only when receiving second packet for being not belonging to first data packet group,
Packet loss detection is carried out, is conducive under load balancing scene, the accuracy of packet loss measurement result is improved.
Figure 10 is a kind of structural representation of first node provided in an embodiment of the present invention.As shown in Figure 10, the first segment
Point 1000 includes：Determining unit 1010 and transmitting element 1020.The first node 1000 can be corresponding for Fig. 1 or Fig. 2 or Fig. 3
First node in embodiment.
Determining unit 1010, for the first data packet number for determining to be included in the first data packet group；
Transmitting element 1020, for sending the first packet in the first data packet group, the first packet to Section Point
Sequence number comprising the first data packet group and the first data packet number, the first data packet number are used to identify the first data packet group bag
The quantity of the packet contained；
Transmitting element 1020, is additionally operable to send the second packet to Section Point, the second packet is not belonging to the first data
Package.
Alternatively, referring to Figure 11, the first node 1000 also includes：
Encapsulation unit 1110, for the transmitting element 1020 to Section Point send the first data packet group in first
Before packet, first packet is packaged using special tag, the special tag includes first data
The sequence number of package and first data packet number.
The encapsulation unit 1110, is additionally operable to special mark described in each packet encapsulation in first data packet group
Label.
In embodiments of the present invention, the first node 1000 by send include the first data packet group sequence number and
First packet of the first data packet number so that Section Point can obtain the first data packet group where the first packet and
First data packet number of the first data packet group, and according to the first packet and the second packet of reception, determine the first data
The number of dropped packets of package, because the Section Point is only receiving second data for being not belonging to first data packet group
Bao Shi, just carries out packet loss detection, is conducive under load balancing scene, improves the accuracy of packet loss measurement result.
Referring to Figure 12, the embodiment of the present invention additionally provides a kind of Section Point structural representation, and the Section Point 1200 can
Think the Section Point in Fig. 1 or Fig. 2 or the corresponding embodiments of Fig. 3.The Section Point 1200 includes：Memory 1201 and reception
Device 1202, and the processor 1203 being connected respectively with the memory 1201 and the receiver 1202, the memory
1201 are used to store batch processing instruction, and the programmed instruction that the processor 1203 is used to call the memory 1201 to store is held
The following operation of row：
Trigger receiver 1202 and receive the first packet that first node is sent, the first packet belongs to the first packet
Group, the first data packet group is the data packet group that first node is sent to Section Point, and the first packet includes the first data packet group
Sequence number and the first data packet number, the first data packet number is used to identify the number of packet that the first data packet group is included
Amount；
Receive the second packet that first node is sent.
When the processor 1203 determines that the second packet is not belonging to the first data packet group, count receive belong to the
Second data packet number of one data packet group, and the first packet is determined according to the first data packet number and the second data packet number
The number of dropped packets of group.
Further, each data envelope is equipped with special tag in the first data packet group, and special tag includes the first data
The sequence number of package and the first data packet number.
Further, processor 1203 is specifically for after the timer that timing unit starts expires, it is determined that receiving
The second data packet number for belonging to the first data packet group.
Further, processor 1203 specifically for：
The number of dropped packets of the first data packet group of correspondence is Z=X-Y;
Wherein, X represents the first data packet number, and Y represents the second data packet number, and Z represents number of dropped packets.
Alternatively, the processor 1203 can be central processing unit（Central Processing Unit, referred to as
CPU）, the memory 1201 can be random-access memory（Random Access Memory, abbreviation RAM）The inside of type
Memory, the receiver 1202 can include General Physics interface, and the physical interface can be Ethernet（Ethernet）
Interface or asynchronous transfer mode（Asynchronous Transfer Mode, abbreviation ATM）Interface.The processor 1203, hair
Device 1202 and memory 1201 is sent to be integrated into one or more independent circuits or hardware, such as：Application-specific IC
（Application Specific Integrated Circuit, abbreviation ASIC）.
Figure 13 is a kind of structural representation of first node provided in an embodiment of the present invention.As shown in figure 13, the first segment
Point 1300 can be the first node in the corresponding embodiments of Fig. 1 or Fig. 2 or Fig. 3.The first node 1300 includes：Memory
1301 and transmitter 1302, and the processor 1303 being connected respectively with the memory 1301 and the transmitter 1302, institute
Stating memory 1301 is used to store batch processing instruction, and the processor 1303 is used for the journey for calling the memory 1301 to store
Sequence instruction performs following operation：
Determine the first data packet number included in the first data packet group.
First packet of the transmitter 1302 into Section Point the first data packet group of transmission is triggered, the first packet is included
The sequence number of first data packet group and the first data packet number, the first data packet number are used to identify what the first data packet group was included
The quantity of packet, and the second packet is sent to Section Point, the second packet is not belonging to the first data packet group.
The processor 1303, is additionally operable to the in the transmitter 1302 sends the first data packet group to Section Point
Before one packet, first packet is packaged using special tag, the special tag includes the described first number
According to the sequence number and first data packet number of package.
The processor 1303, is additionally operable to special mark described in each packet encapsulation in first data packet group
Label.
Alternatively, the processor 1303 can be CPU, and the memory 1301 can be the storage inside of RAM type
Device, the transmitter 1302 can include General Physics interface, and the physical interface can be that Ethernet interfaces or ATM connect
Mouthful.The processor 1303, transmitter 1302 and memory 1301 can be integrated into one or more independent circuits or hardware,
Such as：ASIC.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing routine can be stored in a computer read/write memory medium, and the program exists
During execution, the step of execution includes above method embodiment；And foregoing storage medium can be in following media at least one
Kind：Read-only storage（Read-Only Memory, referred to as ROM）, RAM, magnetic disc or CD etc. are various can be with storage program
The medium of code.
Finally it should be noted that：Above example is only used to exemplary illustration technical scheme, rather than it is limited
System；Although the beneficial effect that the present invention and the present invention are brought is described in detail with reference to the foregoing embodiments, this area
Those of ordinary skill should be understood：It can still modify to the technical scheme described in foregoing embodiments, or right
Which part technical characteristic carries out equivalent substitution；And these modifications or replacement, do not make the essence disengaging of appropriate technical solution
The scope of the claims in the present invention.
Claims (18)
1. a kind of method of packet loss measurement, it is characterised in that including：
Section Point receives the first packet that first node is sent, and first packet belongs to the first data packet group, described
First data packet group is the data packet group that the first node is sent to the Section Point, and first packet is comprising described
The sequence number of first data packet group and the first data packet number, first data packet number are used to identify first packet
The quantity for the packet that group is included；
The Section Point receives transmitted after packet of the first node in first data packet group is sent
The second packet；
When the Section Point determines that second packet is not belonging to first data packet group, what statistics was received belongs to
Second data packet number of first data packet group；
The Section Point determines first packet according to first data packet number and second data packet number
The number of dropped packets of group.
2. according to the method described in claim 1, it is characterised in that also include：
When the Section Point receives the packet of first data packet group, first data packet group is belonged to reception
Packet carry out counting statistics, correspondingly, institute is determined according to the data packet number of first data packet group of the statistics
State the second data packet number.
3. according to the method described in claim 1, it is characterised in that each data envelope is equipped with spy in first data packet group
Different label, the special tag includes the sequence number and first data packet number of first data packet group.
4. method according to claim 3, it is characterised in that also include：
When the Section Point judges that second packet does not encapsulate the special tag, second packet is determined
First data packet group is not belonging to, or,
When the Section Point judges the sequence number and the first data packet group of the second data packet group belonging to second packet
Sequence number it is different when, determine that second packet is not belonging to first data packet group.
5. the method according to claim any one of 1-4, it is characterised in that described when the Section Point determines described
Two packets are not belonging to after first data packet group, in addition to：
The Section Point starts specific duration timer；
After the timer expires, the Section Point counts belong to first data packet group described second received
Data packet number.
6. the method according to claim any one of 1-4, it is characterised in that the Section Point is according to first data
Bag quantity and second data packet number determine the number of dropped packets of first data packet group, specifically include：
The number of dropped packets of correspondence first data packet group is Z=X-Y；
Wherein, the X represents the first data packet number, and the Y represents the second data packet number, and the Z represents the number of dropped packets.
7. a kind of method of packet loss measurement, it is characterised in that including：
First node determines the first data packet number included in the first data packet group；
The first node sends the first packet in first data packet group, the first packet bag to Section Point
Sequence number and the first data packet number containing first data packet group, first data packet number are used to identify described first
The quantity for the packet that data packet group is included, first data packet group is what the first node was sent to the Section Point
Data packet group；
After the packet in first data packet group is sent, the first node sends second to the Section Point
Packet, second packet is not belonging to first data packet group, so that the Section Point is not belonging to institute receiving
When stating second packet of the first data packet group, the second packet for belonging to first data packet group received is counted
Quantity, and determine according to first data packet number and second data packet number packet loss of first data packet group
Number.
8. method according to claim 7, it is characterised in that the first node sends the first packet to Section Point
Before the first packet in group, in addition to：
The first node is packaged using special tag to first packet, and the special tag includes described first
The sequence number of data packet group and first data packet number.
9. method according to claim 8, it is characterised in that each packet in first data packet group is encapsulated
There is the special tag.
10. a kind of Section Point, it is characterised in that including：
Receiving unit, the first packet for receiving first node transmission, first packet belongs to the first data packet group,
First data packet group is the data packet group that the first node is sent to the Section Point, and first packet is included
The sequence number and the first data packet number of first data packet group, first data packet number are used to identify first number
The quantity of the packet included according to package；
The receiving unit, is additionally operable to receive after packet of the first node in first data packet group be sent
The second transmitted packet；
Statistic unit, during for determining that second packet is not belonging to first data packet group, what statistics was received belongs to
Second data packet number of first data packet group；
Computing unit, for determining first packet according to first data packet number and second data packet number
The number of dropped packets of group.
11. Section Point according to claim 10, it is characterised in that also include：
Counting unit, counting statistics is carried out for the packet for belonging to first data packet group to reception, correspondingly, according to
The data packet number of first data packet group of the statistics determines second data packet number.
12. Section Point according to claim 10, it is characterised in that each data envelope in first data packet group
Equipped with special tag, the special tag includes the sequence number and first data packet number of first data packet group.
13. Section Point according to claim 12, it is characterised in that also include：
Determining unit, for when judging that second packet does not encapsulate the special tag, determining second data
Bag is not belonging to first data packet group, or,
When the sequence number for judging the second data packet group belonging to second packet is different from the sequence number of the first data packet group
When, determine that second packet is not belonging to first data packet group.
14. the Section Point according to claim any one of 10-13, it is characterised in that also include：
Timing unit, for starting specific duration timer；
The statistic unit is specifically for after the timer that the timing unit starts expires, it is determined that what is received belongs to
Second data packet number of first data packet group.
15. the Section Point according to claim any one of 10-13, it is characterised in that the computing unit specifically for：
The number of dropped packets of correspondence first data packet group is Z=X-Y；
Wherein, the X represents the first data packet number, and the Y represents the second data packet number, and the Z represents the number of dropped packets.
16. a kind of first node, it is characterised in that including：
Determining unit, for the first data packet number for determining to be included in the first data packet group；
Transmitting element, for sending the first packet in first data packet group, first packet to Section Point
Sequence number and the first data packet number comprising first data packet group, first data packet number are used to identify described the
The quantity for the packet that one data packet group is included, first data packet group is that the first node is sent to the Section Point
Data packet group；
The transmitting element, is additionally operable to after the packet in first data packet group is sent, to the Section Point
The second packet is sent, second packet is not belonging to first data packet group, so that the Section Point is being received
When being not belonging to second packet of first data packet group, belong to first data packet group the received is counted
Two data packet numbers, and first data packet group is determined according to first data packet number and second data packet number
Number of dropped packets.
17. first node according to claim 16, it is characterised in that also include：
Encapsulation unit, for the transmitting element to Section Point send the first data packet group in the first packet before,
First packet is packaged using special tag, the special tag includes the sequence number of first data packet group
With first data packet number.
18. first node according to claim 17, it is characterised in that
The encapsulation unit, is additionally operable to special tag described in each packet encapsulation in first data packet group.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722868.8A CN103684923B (en) | 2013-12-24 | 2013-12-24 | The method and the network equipment of a kind of packet loss measurement |
| PCT/CN2014/093824 WO2015096636A1 (en) | 2013-12-24 | 2014-12-15 | Method for measuring lost packets and network device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310722868.8A CN103684923B (en) | 2013-12-24 | 2013-12-24 | The method and the network equipment of a kind of packet loss measurement |
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| CN103684923B (en) * | 2013-12-24 | 2017-10-17 | 华为技术有限公司 | The method and the network equipment of a kind of packet loss measurement |
| CN106656644B (en) * | 2015-10-28 | 2020-01-10 | 华为技术有限公司 | Packet loss statistical method and network equipment |
| CN108345621B (en) * | 2017-01-24 | 2022-03-08 | 腾讯科技（深圳）有限公司 | Data reconciliation method, system and data system |
| CN111371634B (en) * | 2018-12-26 | 2022-01-18 | 华为技术有限公司 | Communication method, device and system |
| CN110278058B (en) * | 2019-06-05 | 2020-11-03 | 华为技术有限公司 | Redundant information feedback method and communication device |
| CN114073049B (en) * | 2019-09-21 | 2023-11-17 | 华为技术有限公司 | Method and network node for reliability measurement |
| CN111158300B (en) * | 2019-11-20 | 2021-03-23 | 福建星云电子股份有限公司 | Data acquisition and reduction method |
| CN112737884B (en) * | 2020-12-28 | 2022-11-11 | 北京达佳互联信息技术有限公司 | Method for forwarding data and detecting network performance and related device |
| WO2024065550A1 (en) * | 2022-09-29 | 2024-04-04 | 北京小米移动软件有限公司 | Packet loss handling method and apparatus |
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| US6662223B1 (en) * | 1999-07-01 | 2003-12-09 | Cisco Technology, Inc. | Protocol to coordinate network end points to measure network latency |
| CN101699786B (en) * | 2009-10-15 | 2012-09-05 | 华为技术有限公司 | Method, device and system for detecting packet loss |
| CN101719850B (en) * | 2009-11-04 | 2013-03-27 | 中兴通讯股份有限公司 | Device and method for carrying out statistics on Ethernet packet loss rate as well as message switching device |
| CN102546081B (en) * | 2010-12-21 | 2015-09-16 | 中兴通讯股份有限公司 | Method for detecting packet loss, system and media client |
| CN102404166B (en) * | 2011-10-27 | 2015-04-08 | 华为技术有限公司 | Packet loss detecting method and system as well as transmitting equipment and receiving equipment |
| CN102868576B (en) * | 2012-09-26 | 2015-05-13 | 电子科技大学 | Method for measuring downlink packet loss rate of access link of broadband network user |
| CN102904775B (en) * | 2012-09-29 | 2015-04-29 | 华为技术有限公司 | Method, apparatus and system for measuring network packet loss |
| CN103684923B (en) * | 2013-12-24 | 2017-10-17 | 华为技术有限公司 | The method and the network equipment of a kind of packet loss measurement |
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