CN103546303A - Lost frame measuring method and system - Google Patents
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Abstract
The invention provides a lost frame measuring method and system. The method includes allowing a first node and a second node which need to perform lost frame measurement on account own frames; allowing the first node to send the frame count containing the first node and measuring information frames of identifiers capable of being identified by the second node to the second node; when the second node receives the measuring information frames, sending frame count containing the second node and measuring response information frames of identifiers capable of being identified by the first node; when the first node receives the measuring response information frames, determining frame lost conditions between the first node and the second node. According to the method, interaction of the measuring information frames and the measuring response information frames is performed between the nodes, when frame loses due to network failures, lost frame count from one node to other nodes can be measured; when frame loses between adjacent two nodes, the frames can be measured, and accordingly failure positioning, maintenance and management of the network failures can be benefited.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of lost frames assay method and system.
Background technology
While there is traffic loss in network, conventionally can cause service disconnection, to user, bring much inconvenience.Industry exists multiple technologies to carry out fast detecting traffic loss at present.For example, according to International Telecommunications Union's telecommunication standardsization tissue (ITU Telecommunication Standardization Sector, be abbreviated as ITU-T) ethernet operation management maintenance (Operation Administration Maintenance Y.1731, the multiprotocol label switching of transmission characteristic OAM) and G.8113.1 (Multi-Protocol Label Switching Transport Profile, MPLS-TP) definition of OAM, frame/bag/message dropping adopts frame losing mensuration (Loss Measurement, LM) function to measure end to end.
In OAM, a Maintenance Entity comprises maintaining end point (the MEG End Point that is positioned at MPLS-TP transmission path two ends, MEP) and be positioned at the Maintenance Intermediate Point (Maintenance Intermediate Point, MIP) in the middle of MPLS-TP transmission path; Wherein, when this transmission path breaks down, source MEP sends frame losing and measures message (Loss Measurement Message, LMM) give place MEP, then place MEP returns to frame losing and measures response (Loss Measurement Response, LMR) from local information and the informix that the LMR receiving carries, calculate LOF number and frame loss rate to MEP， source, source MEP; Wherein, described LMM frame and LMR frame are referred to as LM frame conventionally.
Conventionally when adopting the LOF of LM functional examination, need to use following several parameter:
TxFCf: frame count is sent out in this locality being illustrated in while sending LMM;
RxFCf: frame count is received in this locality being illustrated in while receiving LMM;
TxFCb: frame count is sent out in this locality being illustrated in while sending LMR;
When source MEP sends LMM, TxFCf is written in LMM; When place MEP receives LMM, the TxFCf in the LMM receiving is copied in LMR, and RxFCf and TxFCb are written in LMR, then place MEP sends LMR; When source MEP receives LMR, record TxFCf, RxFCf, the TxFCb in LMR and receive LMR this locality constantly and receive frame count RxFC1.
If MEP this above-mentioned count value receiving after LMR in source is respectively TxFCf[tc], RxFCf[tc], TxFCb[tc] and RxFC1[tc], last above-mentioned count value is respectively TxFCf[tp], RxFCf[tp], TxFCb[tp] and RxFC1[tp], the frame losing counting that source MEP calculates is as follows:
Frame?Loss[far-end]＝|TxFCf[tc]-TxFCf[tp]|-|RxFCf[tc]-RxFCf[tp]|；
Frame?Loss[near-end]＝|TxFCb[tc]-TxFCb[tp]|-|RxFC1[tc]-RxFC1[tp]|。
For the Ethernet of Y.1731OAM applying, the destination address of the LM frame sending due to source MEP is a certain multicast address, only have MEP just can and process LM frame according to certain multicast address identification, other nodes are direct this LM frame of transparent transmission, can not process and respond; For the MPLS-TP network of G.8113.1OAM applying, generic associative passage (the Generic Associated Channel of the LM frame sending due to source MEP, G-ACH) be a specific fixed value, at G-ACH head, also has Transport label outward, MIP carries out transparent transmission according to Transport label after receiving LM frame, can't resolve G-ACH head, therefore can not identify LM frame, for MEP node, Transport label can be ejected, and then be resolved to G-ACH head, and according to G-ACH, be whether that specific fixed value identifies whether be LM frame, therefore only have MEP node just can process LM frame.
So, in the prior art, only have MEP node could identify and process LM frame, so LM function can only be applied in the loss of measuring frame between MEP node, can not measure for the frame losing of MIP node, therefore, cannot specifically navigate to the concrete MIP node of LOF.In addition, according to the regulation of OAM, only have MEP node just can count the transmitting-receiving situation of frame, be on MIP node, not have the count information about receiving frame, and LM function is the assay method for LOF between node, on MIP node, during not about the counting of receiving frame, more cannot determine MEP to the LOF situation between MIP node.
Specifically can be with reference to figure 1, node S1 and S6 are MEP, other nodes S2～S5 is MIP, when occurring between node S3 and S4 extremely causing traffic frame to be lost, although can pass through mutual LMM and LMR between node S1 and S6, LOF can be detected, but owing to can not measuring LOF between MEP and MIP node, therefore concrete LOF node cannot be detected.And in engineering application, only navigate to the concrete MIP node of frame losing, further the concrete reason of analysis frame loss on this node, finds out root problem.
In sum, the LM function of stipulating in OAM, although problem is measured in the LOF that can solve between MEP, the LOF that the LM in OAM can only be applied between MEP and MEP is measured, and cannot measure for the LOF of MEP and MIP.In addition, some does not support the network of OAM, there is no MEP node, there is no MIP node yet, needs a kind of lost frames to measure to locate fault yet.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of lost frames assay method and system, can accurately navigate to the node of frame losing.
For achieving the above object, technical scheme of the present invention is achieved in that
An assay method, described method comprises:
Need to carry out first node and the Section Point of lost frames mensuration adds up frame count separately respectively;
First node sends the mensuration message frame of the frame count that comprises first node and the identifier that can be identified by Section Point to Section Point;
Described Section Point is received after described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node;
Described first node is received after described mensuration response message frame, is determined the frame loss condition between first node and Section Point;
Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, life span (TTL), type and/or the label of described mensuration message frame, the identifier of making an appointment; The described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment.
The mensuration message frame of the frame count that wherein, described first node transmission comprises first node and the identifier that can be identified by Section Point is:
The destination address of the described mensuration message frame of first node is set to the destination address of described Section Point, or the TTL of described mensuration message frame is set to apart from Section Point jumping figure, or type and/or the label of measuring message frame are set to the value of making an appointment, or in measuring message frame, arrange and make an appointment after identifier, the frame count of described first node is included in described mensuration message frame and is sent.
The mensuration response message frame of the frame count that wherein, described Section Point transmission comprises Section Point and the identifier that can be identified by first node is:
The destination address of the described mensuration response message frame of Section Point is set to the destination address of described first node, or the TTL of described mensuration response message frame is set to apart from first node jumping figure, or type and/or the label of measuring response message frame are set to the value of making an appointment, or in measuring response message frame, arrange and make an appointment after identifier, the frame count of described Section Point is included in described mensuration response message frame and is sent.
Wherein, described frame count is first node and the Section Point receipts of consensus port, tunnel, one or more combinations of pseudo-line aspect/send out frame count in advance.
Further, described method also comprises:
When described first node is not received the mensuration response message frame of described Section Point transmission within the predetermined time, determine that the frame between first node and Section Point is all lost.
The system of mensuration, described system comprises: first node and Section Point; Wherein,
Described first node, for carrying out at needs when LOF is measured, frame count is added up, and the mensuration message frame that sends the frame count that comprises first node and the identifier that can be identified by Section Point is to Section Point; Also, for receiving after the mensuration response message frame of described Section Point transmission, determine the frame loss condition between first node and Section Point;
Described Section Point, adds up frame count for carrying out at needs when LOF is measured, and after receiving described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node;
Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, TTL, type and/or the label of described mensuration message frame, the identifier of making an appointment; The described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment.
Wherein, described first node, specifically for the destination address of described mensuration message frame, be set to the destination address of described Section Point, or the TTL of described mensuration message frame is set to apart from Section Point jumping figure, or type and/or the label of measuring message frame are set to the value of making an appointment, or in measuring message frame, arrange and make an appointment after identifier, the frame count of described first node is included in described mensuration message frame and is sent.
Wherein, described Section Point, specifically for the destination address of described mensuration response message frame, be set to the destination address of described first node, or the TTL of described mensuration response message frame is set to apart from first node jumping figure, or type and/or the label of measuring response message frame are set to the value of making an appointment, or in measuring response message frame, arrange and make an appointment after identifier, the frame count of described Section Point is included in described mensuration response message frame and is sent.
Wherein, described frame count is first node and the Section Point receipts of consensus port, tunnel, one or more combinations of pseudo-line aspect/send out frame count in advance.
Further, described first node, also when not receiving within the predetermined time the mensuration response message frame that described Section Point sends, determines that the frame between first node and Section Point is all lost.
The present invention is by measuring message frame and measuring the mutual of response message frame between node, not only can determine the frame loss condition between MEP node in network, can also determine MEP to MIP, MIP to the frame loss condition between MIP node, even, when network is not supported OAM, also can determine two frame loss conditions between node.So, in network, break down while causing LOF, can determine a node and divide the frame losing being clipped between other nodes counting, when having frame losing between adjacent two nodes, also can be out determined, be beneficial to fault location, the maintenance and management of network.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of lost frames assay method in existing OAM network;
Fig. 2 is the realization flow schematic diagram of lost frames assay method of the present invention;
Fig. 3 be lost frames assay method of the present invention embodiment mono-realize schematic diagram;
Fig. 4 be lost frames assay method of the present invention embodiment bis-realize schematic diagram;
Fig. 5 be lost frames assay method of the present invention embodiment tri-realize schematic diagram;
Fig. 6 is the structural representation that lost frames of the present invention are measured system.
Embodiment
Basic thought of the present invention is: first node and the Section Point that need to carry out lost frames mensuration are added up frame count separately respectively; First node sends the mensuration message frame of the frame count that comprises first node and the identifier that can be identified by Section Point to Section Point; Described Section Point is received after described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node; Described first node is received after described mensuration response message frame, is determined the frame loss condition between first node and Section Point; Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, life span TTL, type and/or the label of described mensuration message frame, the identifier of making an appointment; The described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 2 shows the realization flow of lost frames assay method of the present invention, and as shown in Figure 2, described method comprises the steps:
Here, described first node and/or Section Point can or not supported the node of OAM(Operation Administration Maintenance) for MEP, MIP, wherein, when described first node or Section Point are MIP or while not supporting the node of OAM(Operation Administration Maintenance), described first node or Section Point are added up and are specially frame count: receipts frame count that can be based on port, when this port, often receive a frame, counter adds one, the receipts frame count that the value in counter is this port; Receipts frame count that can also be based on certain tunnel of port, a frame is often received in certain tunnel of this port, and counter adds one, and the value in counter is the receipts frame count based on this certain tunnel of port.
So, described frame count can be the receipts of the port of node, tunnel, one or more combinations of pseudo-line aspect/send out frame count; So long as can meet first node and the Section Point frame count of consensus aspect in advance.
Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, TTL, type and/or the label of described mensuration message frame, the identifier of making an appointment; Here, described first node can arrange the identifier that can be identified by Section Point in the following way: the destination address of measuring message frame is set to the destination address of receiving node (being Section Point), or life span (the Time to Live of message frame will be measured, TTL) be set to apart from Section Point jumping figure, or the type of mensuration message frame, label etc. are set to the value of making an appointment, or in measuring message frame, the identifier of making an appointment are set.
Wherein, the described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment; Here, described Section Point can arrange the identifier that can be identified by first node in the following way: the destination address of measuring response message frame is set to the destination address of receiving node (being first node), or the TTL that measures response message frame is set to apart from first node jumping figure, or the type of mensuration response message frame, label etc. are set to the value of making an appointment, or in measuring response message frame, the identifier of making an appointment are set.
Here, described first node, according to the frame count in the frame count in the mensuration message frame sending and the mensuration response message frame that receives, is determined the frame loss condition between first node and Section Point.
In addition, said method also comprises: when described first node is not received the mensuration response message frame of described Section Point transmission within the predefined time always, the frame between definite described first node and Section Point is all lost.
Fig. 3 shows the realization of the embodiment mono-of lost frames assay method of the present invention, and Fig. 3 is the signal of carrying out with MPLS-TP network, and wherein node S1 and S6 are MEP, and other nodes S2～S5 is MIP; When there is frame losing between node S3 and S4, if the frame losing assay method between the MEP of employing prior art has occurred LOF although can detect on the path between node S1 and S6, but the concrete node location of LOF cannot have been detected.
Adopt said method of the present invention, first need the node S2～S5 measuring respectively receiving frame counting separately to be added up, because existing MEP node can carry out receiving frame counting statistics, therefore only need additionally node S2～S5 to be carried out to frame count statistics;
Then node S1 sends and measures message frame to each MIP respectively, in order to make each MIP node, can identify and respond the mensuration message frame that MEP node sends, MEP node is when sending mensuration message frame, TTL is wherein set to the jumping figure that distance is specified MIP, when node is when receiving frame, if the TTL of this frame is greater than 1, forwards, and TTL is subtracted to 1, if the TTL of this frame equals 1, further resolve, and stop forwarding this frame.For example, when TTL is set to 1, the mensuration message frame that node S1 sends can be received and reply by node S2 mensuration response message frame; When TTL is set to 2, when the mensuration message frame that node S1 sends is forwarded by node S2, TTL can subtract 1, then can be received and reply mensuration response message frame by node S3; When TTL is set to be greater than or equal to MEP to the jumping figure between MEP (being the jumping figure 5 between node S1 and S6 in the present embodiment), the mensuration message frame that MEP node S1 sends can be received and reply mensuration response message frame by the MEP node S6 of opposite end.Should be appreciated that Fig. 3 only take node S1 and send to node S3 and S4 to illustrate as example, wherein, node S1 sends to the TTL of the mensuration message frame of S4 to be set to 3, and node S1 sends to the TTL of the mensuration message frame of S3 to be set to 2.
What note is, although the TTL in the present embodiment is the jumping figure between sending node and receiving node, but can be also other values that calculate by jumping figure, such as jumping figure add 1, jumping figure subtracts 1, certain higher value deducts jumping figure etc., as long as responsive node and sending node are consensus in advance.
In the mensuration message frame sending at node S1, carried the frame counting information of node S1, in the mensuration response message frame of replying at each node equally, also carried the frame counting information of recovery of node, node S1 is according to these information, calculate after the frame losing counting between self and each MIP/MEP node, with reference to Fig. 3, node S1 can determine node S1 between S3 without frame losing, node S1 has frame losing to node S4, thereby can judge node S3 to the appearance between S4 frame losing, therefore having navigated to concrete frame losing position is between node S3 and S4, may be that frame losing appears in node S3 or S4, also may be that frame losing appears in link between node S3 and S4.
Wherein, the frame counting information comprising in measuring message frame and measuring response message frame, can be a receipts/frame count of port, tunnel or pseudo-line aspect, or the multiple combination of above-mentioned counting, as long as responsive node and sending node are consensus in advance.
Fig. 4 shows the realization signal of the embodiment bis-of lost frames assay method of the present invention, and as shown in Figure 4, node S1 sends to the receiving frame counting that has carried certain tunnel under self port one in the mensuration message frame of node S3; And in the mensuration response message frame that node S3 replys, both carried the tunnel receiving frame counting copying the mensuration message frame of receiving from node S1, also carried the receiving frame counting of the same tunnel of self port 3; When node S1 receives after this mensuration response message frame, according to the frame count in described mensuration response message frame and local frame count, the port one that calculates node S1 is the frame losing value in this tunnel to the port 3 of node S3.
Similarly, node S3 sends to the receiving frame counting that has carried self port 2 and 3 times certain tunnels in the mensuration message frame of node S5, and in the mensuration response message frame that node S5 replys, both carried the tunnel receiving frame counting copying the mensuration message frame of receiving from node S3, also carried the receiving frame counting of the same tunnel of self port 4 and 5, when node S3 receives after this mensuration response message frame, according to the frame count in described mensuration response message frame and local frame count, calculate the port 2 of node S3, within 3 minutes, be clipped to the port 4 of node S5, the 5 frame losing values in this tunnel, if the port 2 at node S3 does not have frame losing between the port 4 of node S5, and at the port 3 of node S3 to there being frame losing between the port 5 of node S5, can determine between the port 4 of node S5 and port 5 and have frame losing.
In addition, when sending, node measures after message frame, in default certain hour, and for example 5 seconds, do not receive the mensuration response message frame of opposite end, determine that the frame losing between described node and opposite end is counted as whole frames.
Fig. 5 shows the realization of the embodiment tri-of lost frames assay method of the present invention, and Fig. 5 shows a kind of Ethernet or IP network, adopts said method of the present invention, needs the node (node S1～S6) of measuring to add up receiving frame counting separately, node S1 sends and measures message frame to other nodes, here, the unique identifier that node S1 and S3 set in advance by setting is as the identifier that can be identified by the other side, the mensuration message frame of issuing node S3 at node S1 has comprised the unique identifier that can be identified by node S3, the mensuration response message frame that node S3 replies to node S1 has comprised the unique identifier that can be identified by node S1, this identifier is specifically as follows the destination address of opposite end, frame type, the approximately definite value of certain specific fields or above-mentioned combination etc., the frame counting information that has also comprised node in measuring message frame and measuring response message frame, be specifically as follows port, VLAN (Virtual Local Area Network, VLAN) or the receipts of IP aspect/send out frame count, or the multiple combination of above-mentioned counting, as long as responsive node and sending node are consensus mutually in advance.
In order to measure the frame loss condition of VLAN 100 in Ethernet, node S1 sends and measures message frame, ad-hoc location in this mensuration message frame (for example adding 100 byte places at first address) has comprised the unique identifier that node S3 can identify, as can be 0x03030303, and the receiving frame of the VLAN100 that has comprised self port one counting;
Node S3 detects corresponding ad-hoc location (being that first address adds 100 byte places), when the content of this position is the unique identifier (being 0x03030303) of making an appointment, no longer forward, but reply, measure response message frame, and the ad-hoc location in described mensuration response message frame (for example adding 120 byte places at first address) is write the unique identifier of ingress S1, can be 0x01010101, in described mensuration response message frame, also comprise the receiving frame counting of the VLAN 100 of self port 2,3;
Node S1 receives after this mensuration response message frame, detect corresponding ad-hoc location, at first address, add whether 120 byte places are the unique identifier (being 0x01010101) of making an appointment, if, no longer forward, but calculate node S1 port one according to the frame count receiving and the frame count of self, divide the frame losing number that is clipped to node S3 port 2,3.
In like manner, node S1 calculates self port one and divides the frame losing counting that is clipped to node S4 port 4,5.If while having frame losing between node S3 and S4, node S1 can determine port one between node S3 port 3 without frame losing, between node S4 port 4, have frame losing, therefore can judge frame losing position is between node S3 and S4.
Further, if interrupted completely between node S3 and S4, node S1 (for example 5 seconds) within predefined a period of time can not receive the mensuration response message frame of node S4, now determines that node S1 all loses to the frame between node S4.
Fig. 6 shows the structure that lost frames of the present invention are measured system, and as shown in Figure 6, described system comprises: first node and Section Point; Wherein,
Described first node, for carrying out at needs when LOF is measured, frame count is added up, and the mensuration message frame that sends the frame count that comprises first node and the identifier that can be identified by Section Point is to Section Point; Also, for receiving after the mensuration response message frame of described Section Point transmission, determine the frame loss condition between first node and Section Point;
Described Section Point, adds up frame count for carrying out at needs when LOF is measured, and after receiving described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node.
Wherein, described first node, specifically for the destination address of described mensuration message frame, be set to the destination address of described Section Point, or the TTL of described mensuration message frame is set to apart from Section Point jumping figure, or type and/or the label of measuring message frame are set to the value of making an appointment, or in measuring message frame, arrange and make an appointment after identifier, the frame count of described first node is included in described mensuration message frame and is sent.
Wherein, described Section Point, specifically for the destination address of described mensuration response message frame, be set to the destination address of described first node, or the TTL of described mensuration response message frame is set to apart from first node jumping figure, or type and/or the label of measuring response message frame are set to the value of making an appointment, or in measuring response message frame, arrange and make an appointment after identifier, the frame count of described Section Point is included in described mensuration response message frame and is sent.
Wherein, described frame count is first node and the Section Point receipts of consensus port, tunnel, one or more combinations of pseudo-line aspect/send out frame count in advance.
Further, described first node, also when not receiving within the predetermined time the mensuration response message frame that described Section Point sends, determines that the frame between first node and Section Point is all lost.
One of ordinary skill in the art will appreciate that all or part of step in said method can come instruction related hardware to complete by program, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a lost frames assay method, is characterized in that, described method comprises:
Need to carry out first node and the Section Point of lost frames mensuration adds up frame count separately respectively;
First node sends the mensuration message frame of the frame count that comprises first node and the identifier that can be identified by Section Point to Section Point;
Described Section Point is received after described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node;
Described first node is received after described mensuration response message frame, is determined the frame loss condition between first node and Section Point;
Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, life span TTL, type and/or the label of described mensuration message frame, the identifier of making an appointment; The described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment.
2. method according to claim 1, is characterized in that, the mensuration message frame that described first node sends the frame count that comprises first node and the identifier that can be identified by Section Point is:
The destination address of the described mensuration message frame of first node is set to the destination address of described Section Point, or the TTL of described mensuration message frame is set to apart from Section Point jumping figure, or type and/or the label of measuring message frame are set to the value of making an appointment, or in measuring message frame, arrange and make an appointment after identifier, the frame count of described first node is included in described mensuration message frame and is sent.
3. method according to claim 1, is characterized in that, the mensuration response message frame that described Section Point sends the frame count that comprises Section Point and the identifier that can be identified by first node is:
The destination address of the described mensuration response message frame of Section Point is set to the destination address of described first node, or the TTL of described mensuration response message frame is set to apart from first node jumping figure, or type and/or the label of measuring response message frame are set to the value of making an appointment, or in measuring response message frame, arrange and make an appointment after identifier, the frame count of described Section Point is included in described mensuration response message frame and is sent.
4. method according to claim 1, is characterized in that, described frame count is first node and the Section Point receipts of consensus port, tunnel, one or more combinations of pseudo-line aspect/send out frame count in advance.
5. method according to claim 1, is characterized in that, described method also comprises:
When described first node is not received the mensuration response message frame of described Section Point transmission within the predetermined time, determine that the frame between first node and Section Point is all lost.
6. lost frames are measured a system, it is characterized in that, described system comprises: first node and Section Point; Wherein,
Described first node, for carrying out at needs when LOF is measured, frame count is added up, and the mensuration message frame that sends the frame count that comprises first node and the identifier that can be identified by Section Point is to Section Point; Also, for receiving after the mensuration response message frame of described Section Point transmission, determine the frame loss condition between first node and Section Point;
Described Section Point, adds up frame count for carrying out at needs when LOF is measured, and after receiving described mensuration message frame, sends the mensuration response message frame of the frame count that comprises Section Point and the identifier that can be identified by first node;
Wherein, the described identifier that can be identified by Section Point comprises one or more of destination address, TTL, type and/or the label of described mensuration message frame, the identifier of making an appointment; The described identifier that can be identified by first node comprises one or more of destination address, TTL, type and/or the label of described mensuration response message frame, the identifier of making an appointment.
7. system according to claim 6, it is characterized in that, described first node, specifically for the destination address of described mensuration message frame, be set to the destination address of described Section Point, or the TTL of described mensuration message frame is set to apart from Section Point jumping figure, or type and/or the label of measuring message frame are set to the value of making an appointment, or in measuring message frame, arrange and make an appointment after identifier, the frame count of described first node is included in described mensuration message frame and is sent.
8. system according to claim 6, it is characterized in that, described Section Point, specifically for the destination address of described mensuration response message frame, be set to the destination address of described first node, or the TTL of described mensuration response message frame is set to apart from first node jumping figure, or type and/or the label of measuring response message frame are set to the value of making an appointment, or in measuring response message frame, arrange and make an appointment after identifier, the frame count of described Section Point is included in described mensuration response message frame and is sent.
9. system according to claim 6, is characterized in that, described frame count is first node and the Section Point receipts of consensus port, tunnel, one or more combinations of pseudo-line aspect/send out frame count in advance.
10. system according to claim 6, is characterized in that, described first node also when not receiving within the predetermined time the mensuration response message frame that described Section Point sends, determines that the frame between first node and Section Point is all lost.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210235076.3A CN103546303A (en) | 2012-07-09 | 2012-07-09 | Lost frame measuring method and system |
| PCT/CN2013/077818 WO2014008809A1 (en) | 2012-07-09 | 2013-06-24 | Frame loss detection method and system |
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| CN201210235076.3A CN103546303A (en) | 2012-07-09 | 2012-07-09 | Lost frame measuring method and system |
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| CN109995603A (en) * | 2017-12-29 | 2019-07-09 | 中国移动通信集团山东有限公司 | The method, apparatus and electronic equipment that packet loss measures under a kind of Tag model |
| CN114651426A (en) * | 2019-11-20 | 2022-06-21 | 三菱电机株式会社 | Optical communication device and communication system |
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| CN106274531A (en) * | 2016-08-26 | 2017-01-04 | 北京长城华冠汽车科技股份有限公司 | Fault handling method and device |
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