CN101013960A - Method and apparatus for obtaining physical address of Ethernet node - Google Patents
Method and apparatus for obtaining physical address of Ethernet node Download PDFInfo
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Abstract
The invention provides one method to get Ethernet point physical address, which comprises the following steps: sustaining association one point and researching design point physical address; if yes, the sending to other point with design point inf9rmation index message; keeping association other point information to find out its physical address; sending index message point from message and to analyze design point physical address and to establish design point and physical address map relation. The invention also provides one device to get the Ethernet point physical address.
Description
Technical field
The present invention relates to field of network management, particularly a kind of method and apparatus that obtains the ethernet node physical address.
Background technology
Ethernet technology is owing to be simple and easy to make it all obtain application on a large scale in local area network (LAN), metropolitan area network, wide area network scope with, cheap, characteristics such as bandwidth can improve constantly.But the maintainability of traditional ethernet, manageability, the ability of can runing are all more weak, expansion gradually along with the Ethernet range of application, demand to Ethernet OAM (Operation, Administration andMaintenance-operation, management, maintenance) function is also more and more stronger.Ethernet OAM refers to operation, management, the maintenance of Ethernet, its function can be divided into fault management and performance management: fault management is used for the detection of connectivity of network, is similar to testing tools such as BFD (the two-way forwarding of Bidirectional Forwarding Detection-detects), MPLS (Multi-protocol LabelSwitching-multiprotocol label switching) OAM; Performance management mainly refers to the packet loss in the Network Transmission, time delay, the isoparametric measurement of shake.Fault management can be used for realizing that fast detecting and trigger protection switch, and realizes the target of service outage duration less than 50ms; Performance management can be Virtual network operator monitoring network ruuning situation is provided, and confirms whether the transfer capability of network meets the SLA (Service Level Agreement-service-level agreement) that signs with the user.
IEEE, ITU-T, MEF etc. organize and are promoting Ethernet OAM work at present, and 802.1ag is exactly a kind of Ethernet OAM wherein, and it is used for Ethernet fault management end to end.Fig. 1 has provided an Ethernet networking schematic diagram, and wherein MD (Maintenance Domain-maintenance field) is meant a network that need carry out OAM to it, usually its territory being made up of interconnected a plurality of Ethernet switches.A MD is appreciated that the equipment of being correlated with into by manager's unified management.Be divided into a plurality of Service Instances again among the MD, i.e. SI (Service Instance-Service Instance), the general corresponding VLAN (Virtual Local Area Network-VLAN) of SI.A SI may be made up of a plurality of equipment, wherein some ports of equipment connect CE (Customer Edge-client edge) equipment, these ports are called as MEP (Maintenance AassociationEnd Point-Maintenance Association endpoint node), other is used to realize that the port that connects between MEP is called as MIP (MaintenanceAssociation Internal Point-Maintenance association Intermediate Point), and MEP and MIP are referred to as MP (Maintenance AssociationPoint-Maintenance Association node).All MEP among SI form MA (Maintenance Association-Maintenance Association), fault detect is to carry out between all MEP in a MA, each MEP has an ID, abbreviate MEP-ID (MEPIdentifier-MEP identifier) as, MEP-ID is unique in same MA.The subnetwork of a MD inside may be safeguarded that promptly MD may be nested by another manager.MD Level (rank) information of carrying in the OAM message can be used for handling the problem that different levels OAM passes through, low-level OAM message can not pass through high level MD, and high level OAM message can pass through low-level MD, the OAM message can be controlled at like this in the territory of qualification to propagate.
The Ethernet fault detect is undertaken by timed sending multicast CC (Continuity Check-detection of connectivity) message.Each MEP all other MEP in MA periodically send multicast CC message, if certain MEP does not receive the CC message of certain corresponding far-end MEP in designated period, think that then the inner somewhere of MA breaks down, can detect by loopback detection or link tracing then and carry out fault location.Loopback detection is undertaken by sending LB (Loopback-loopback) message, send the LB message by another MEP/MIP clean culture in same MA of certain MEP in the MA, intermediate node carries out two layers of forwarding according to the target MAC (Media Access Control) address of LB message, the target MAC (Media Access Control) address that receiving node is checked through in the LB message is consistent with the MAC Address of this node, then to source node loopback LB response message, can detect two connectednesses, time delay, shake, packet loss between the node etc. by sending the LB message; Link tracing detects by sending LT (Link Trace-link tracing) message and is undertaken, send the LT message by another MEP/MIP multicast in same MA of certain MEP in the MA, carry the MAC Address of destination node in the message, the node of process all sends the LT response message to source node on the way, the MAC Address of application target node is searched and is transmitted simultaneously, if hit then continue to generate the LT message and transmit forward, otherwise broadcasting or abandon the LT message can acquire the path, fault location node of destination node etc. by the LT message.
802.1ag in often can use the LB/LT function; whether the link that is used for detecting some destination nodes has fault; measure the parameter such as time delay, shake, packet loss of this destination node; watch the SLA that whether satisfies the user; and use the prerequisite of LB/LT function is to know the MAC Address of destination node, and MAC Address is difficult to note.In 802.1ag, all distributed an identifier (being MEP-ID) at each MEP node, MEP-ID scope in each MA is 1～8191, LB/LT message at the MEP node can adopt MEP-ID to come the recognition purpose node, automatically MEP-ID is changed into target MAC (Media Access Control) address by equipment, so just need set up the mapping relations between MEP-ID and the target MAC (Media Access Control) address.Can set up mapping relations between MEP-ID and the target MAC (Media Access Control) address by following two kinds of methods at present: first method is to remove to inquire about MAC Address and MEP-ID to every equipment, sets up the mapping relations of MEP-ID and MAC Address by hand; Second method is each MEP when receiving the CC message, parses far-end MEP-ID and source MAC from the CC message, sets up the mapping relations of far-end MEP-ID and target MAC (Media Access Control) address.First method removes to inquire about MAC Address and MEP-ID to every equipment, not only trouble, efficient is low, and make mistakes easily, if a far-end equipment is changed or MAC Address changes then need the manual mapping relations of removing to change MEP-ID and target MAC (Media Access Control) address, under the many situations of equipment, it is very backward that this method seems; Each MEP of second method receives that a CC message all can write down or inquire about the mapping relations between MEP-ID and the MAC Address, so just might write down a large amount of MAC Address, and CC message transmission frequency is very high, each CC message all needs inquiry to waste very much resource, the mapping relations between unconcerned MEP-ID of a large number of users and the MAC Address also might have been write down, increased management costs, and some equipment is not send the CC message, so also just can't obtain the MAC Address of these equipment.
802.1ag agreement has been stipulated when carrying out the Ethernet fault detect, the CC message periodically carries out multicast by each MEP all other MEP in MA and sends, if certain MEP does not receive the CC message of certain corresponding far-end MEP in designated period, think that then the inner somewhere of MA breaks down.When fault detect begins generally can adopt the first packet trigger mechanism, receives that promptly beginning is monitored its overtime situation at far-end MEP-ID start detection behind first CC message, in case overtime then trigger alarm.Adopt the first packet trigger mechanism to detect Ethernet OAM, if link itself just has problem, at this moment Ethernet OAM is to produce alarm (not receiving that first CC message also just not can start overtime detection), and the user can think that Ethernet OAM has begun to have detected (network management interface not alarm), until professional obstructed or specially remove to inquire about this link and just can pinpoint the problems.In addition, if in same MA, disposed the situation (MAC Address of distinct device is different) that MEP-ID repeats, adopting present agreement to can not check, is to have changed MAC Address after the user has changed equipment because the 802.1ag agreement can't be distinguished, or user's configuration error.
Summary of the invention
In order to solve owing to do not know the physical address of node, and can't be by sending the problem that the LB/LT message carry out the ethernet link fault location, the embodiment of the invention has proposed a kind of method that obtains the ethernet node physical address, described method comprises:
A node in the Maintenance Association is searched the physical address of specified node, if do not find, other node in described Maintenance Association sends the query message that contains described specified node information;
Other node in the described Maintenance Association is received described query message, arrive the physical address of described specified node according to the described specified node information searching in the described query message, and contain the inquiry response message of described specified node physical address to the node transmission that sends described query message;
The node that sends described query message is received described inquiry response message, parses the physical address of described specified node from described inquiry response message, and sets up the mapping relations between described specified node and the described physical address, and ageing time is set simultaneously.
The embodiment of the invention also provides a kind of device that obtains the ethernet node physical address, and described device comprises that searching module, query message sending module, query message receiver module, inquiry response message sending module, inquiry response message receiver module and mapping sets up module;
Describedly search the physical address that module is used to search specified node, and lookup result is sent to described query message sending module;
Described query message sending module is used for sending the query message that contains specified node information to described query message receiver module when the lookup result that receives does not find the physical address of specified node for expression;
Described query message receiver module is used to receive the query message that described query message sending module sends, and the query message of receiving is sent to described inquiry response message sending module;
Described inquiry response message sending module is used for the specified node information according to the query message of receiving, finds the physical address of specified node, and sends the inquiry response message that contains the specified node physical address to described inquiry response message receiver module;
Described inquiry response message receiver module is used to receive the inquiry response message that described inquiry response message sending module sends, and parses the physical address of specified node from the inquiry response message, this physical address is sent to described mapping set up module;
Described mapping is set up module and is used to receive the physical address that described inquiry response message receiver module sends, and sets up the mapping relations between this physical address and the specified node.
Beneficial effect:
1. because the embodiment of the invention has been introduced query message and inquiry response message, so can set up and safeguard the node of needs care and the mapping relations between the target physical address very easily, saved system resource so widely, needed no longer also simultaneously to worry that the other side does not send the CC message and can't set up the problem of mapping relations between node and the target physical address.
2. because the embodiment of the invention has been set up the mapping relations of node identifier and target physical address, as long as know the identifier of node like this, just can obtain the target physical address corresponding by looking into mapping table with this node identifier, and node identifier is again integer, and management gets up to make things convenient for manyly than the target physical address.
3. because the embodiment of the invention has been introduced query message and inquiry response message, thus can solve the problem that same Maintenance Association interior nodes is repeated to dispose, and since ethernet link itself fault or configuration error are arranged and can't produce the problem of alarm.
Description of drawings
Fig. 1 is an Ethernet networking schematic diagram in the prior art;
Fig. 2 is the method flow diagram that the embodiment of the invention obtains the ethernet node physical address;
Fig. 3 is the structure chart that the embodiment of the invention obtains the device of ethernet node physical address.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
In the time on certain equipment, need carrying out fault location by the LB/LT message at certain the MEP node in the MA, the user imports the MEP-ID of this MEP node on this equipment, if this equipment does not find the target MAC (Media Access Control) address of this MEP-ID correspondence, then this equipment adopts multicast mode to send query message, and from the inquiry response message, parse the target MAC (Media Access Control) address of corresponding MEP-ID, set up the mapping relations between MEP-ID and the target MAC (Media Access Control) address, ageing time is set simultaneously.When carrying out fault location, need only MEP-ID like this, just can obtain the MAC Address of this destination node, thereby realize the LB/LT message forwarding by the query mappings relation table according to destination node by the LB/LT message.
Adopt technique scheme to realize that the method that obtains the ethernet node physical address specifically may further comprise the steps, referring to Fig. 2:
Step 101: the user imports the MEP-ID of the node M EP that will inquire about on device A.
Step 102: device A is searched the target MAC (Media Access Control) address corresponding with MEP-ID, if find, then execution in step 108, otherwise execution in step 103.
Step 103: device A adopts multicast mode other MEP node in the MA under this node M EP to send query message.
The form of query message is as shown in table 1, wherein MD Level has filled in and issued the Level of the affiliated MD of the affiliated MA of equipment that inquires about, Version fills out 0, it is (tentative that the OpCode value is 64, can be worth for other), the target MAC (Media Access Control) address of expression inquiry MEP-ID correspondence, Reserve fills out 0 in the territory, Maintenance Association End Point Identifier fills in the MEP-ID that will inquire about, MD/MAName fills out the MD/MA Name under this MEP-ID, MD/MA Nane form is consistent with the requirement in the CC message, and MACAddress fills in the territory source MAC of the equipment that sends query message, prevents that source MAC is changed in the intermediate transport process.The target MAC (Media Access Control) address of query message is identical with the CC message with encapsulated type, adopts the multicast mode, and source MAC is the MAC Address of the equipment of transmission query message, and middle forwarding unit does not need to change the source MAC of query message.
| 0 | 1 | 2 | 3 | ||
| 1 | MD Level | Version | OpCode | Reserve | |
| 5 | Maintenance Association End Point Identifier | Maintenance Domain Name.Format | Maintenance Domain Name Length | ||
| 9 | Maintenance Domain Name... | ||||
| 13 | Short MA Name Format | Short MA Name Length | Short MA Name... | ||
| 17 | ...remainder of MAID | ||||
| 21 | MAC Address | ||||
| last | End TLV(0) | ||||
Table 1
Step 104: equipment B is received query message, from query message, parse MD Name, MAName, MD Level and MEP-ID, target MAC (Media Access Control) address according to these value inquiries MEP-ID correspondence, if do not inquire corresponding target MAC (Media Access Control) address, then execution in step 105, if inquire the target MAC (Media Access Control) address of MEP-ID correspondence, then execution in step 106.
Step 105: equipment B directly abandons the query message of receiving.
Step 106: equipment B adopts the mode of clean culture to send the inquiry response message to device A.
The form of inquiry response message and the form of query message are basic identical, just OpCode value is 65 (to fix tentatively, can be worth for other), show it is the inquiry response message, MAC Address fills in the target MAC (Media Access Control) address of MEP-ID correspondence in the territory, the target MAC (Media Access Control) address of inquiry response message is for sending the source MAC (the MAC Address territory from query message is obtained) of query message, and the source MAC of inquiry response message is for sending the source MAC of inquiry response message.
Step 107: after device A is received the inquiry response message, resolve the inquiry response message, from the MACAddress territory of inquiry response message, obtain the target MAC (Media Access Control) address of the MEP-ID correspondence that will inquire about, set up the mapping relations between MEP-ID and the target MAC (Media Access Control) address, ageing time is set simultaneously.
Step 108: device A sends the LB/LT message according to the target MAC (Media Access Control) address of MEP-ID correspondence to this node M EP, carries out the detection of ethernet link fault location.
Present embodiment is by sending query message and receiving the inquiry response message, set up and safeguard the MEP-ID of the MEP node that needs care and the mapping relations between its corresponding target MAC (Media Access Control) address, do not need to set up and safeguard mapping relations between the MEP-ID target MAC (Media Access Control) address corresponding with it by artificial or CC message, so not only saved system resource widely, nor must worry the other side not send the CC message and can't set up the mapping relations problem of MEP-ID and target MAC (Media Access Control) address.When the user carries out the detection of ethernet link fault location by sending the LB/LT message,, do not need to know corresponding target MAC (Media Access Control) address, and MEP-ID is an integer that management gets up to make things convenient for manyly than target MAC (Media Access Control) address like this as long as known corresponding MEP-ID.
In addition, if equipment has been received a plurality of inquiry response messages, but the target MAC (Media Access Control) address corresponding with MEP-ID is all different in each inquiry response message, has then disposed the MEP-ID that repeats in the MA at devices illustrated place, at this moment can produce the alarm that MEP-ID repeats, notify the user configuration error.
The described technical scheme of the embodiment of the invention can also solve because of link itself problem, the other side's configuration error and can't produce the problem of alarm, it realizes that principle is: after equipment disposition MEP detects, start the first packet trigger mechanism, system is not before receiving first CC message, MEP-ID timed sending query message to the needs monitoring, for example the user can be provided with and send the one query message each second, if continuous several times (for example more than 3 times) is not received the inquiry response message, illustrate that then ethernet link has problem, perhaps the opposite end is basic does not just dispose this MEP-ID, produce the alarm prompt user, if can regularly receive the inquiry response message, illustrate that then ethernet link and configuration are all no problem, just also be not activated CC message sending function, do not need to produce alarm.
Referring to Fig. 3, the embodiment of the invention also provides a kind of device that obtains the ethernet node physical address, and this device comprises that searching module, query message sending module, query message receiver module, inquiry response message sending module, inquiry response message receiver module and mapping sets up module;
Search the physical address that module is used to search specified node, and lookup result is sent to the query message sending module;
The query message sending module is used for sending the query message that contains specified node information to the query message receiver module when the lookup result that receives does not find the physical address of specified node for expression;
The query message receiver module is used to receive the query message that the query message sending module sends, and the query message of receiving is sent to inquiry response message sending module;
Inquiry response message sending module is used for the specified node information according to the query message of receiving, finds the physical address of specified node, and sends the inquiry response message that contains the specified node physical address to inquiry response message receiver module;
Inquiry response message receiver module is used to receive the inquiry response message that inquiry response message sending module sends, and parses the physical address of specified node from the inquiry response message, this physical address is sent to mapping set up module;
Mapping is set up module and is used to receive the physical address that inquiry response message receiver module sends, and sets up the mapping relations between this physical address and the specified node.
This device also comprises the inspection module, and whether the specified node physical address of checking the inquiry response message that module is used for checking that inquiry response message receiver module receives is more than 1, if then send the alarm of configuration error.
This device also comprises the alarm sending module, the alarm sending module was used for before not receiving first CC message, if the continuous inquiry response message of not receiving more than 3 times that inquiry response message sending module sends of inquiry response message receiver module then sends the prompting link or disposes problematic alarm.
The inquiry response message that present embodiment is received by the query message and the inquiry response message receiver module of the transmission of query message sending module, set up and safeguard the MEP-ID of the MEP node that needs care and the mapping relations between its corresponding target MAC (Media Access Control) address, do not need to set up and safeguard mapping relations between the MEP-ID target MAC (Media Access Control) address corresponding with it by artificial or CC message, so not only saved system resource widely, nor must worry the other side not send the CC message and can't set up the mapping relations problem of MEP-ID and target MAC (Media Access Control) address.
Above-described embodiment is a more preferably embodiment of the present invention, and common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included in protection scope of the present invention.
Claims (7)
1. a method that obtains the ethernet node physical address is characterized in that, described method comprises:
A node in the Maintenance Association is searched the physical address of specified node, if do not find, other node in described Maintenance Association sends the query message that contains described specified node information;
Other node in the described Maintenance Association is received described query message, arrive the physical address of described specified node according to the described specified node information searching in the described query message, and contain the inquiry response message of described specified node physical address to the node transmission that sends described query message;
The node that sends described query message is received described inquiry response message, parses the physical address of described specified node from described inquiry response message, and sets up the mapping relations between described specified node and the described physical address, and ageing time is set simultaneously.
2. the method for acquisition ethernet node physical address as claimed in claim 1, it is characterized in that, the physical address that parses described specified node from described inquiry response message also comprises afterwards: whether the physical address of checking described specified node is more than 1, if then send the alarm of configuration error.
3. the method for acquisition ethernet node physical address as claimed in claim 1, it is characterized in that, the node that sends described query message is received described inquiry response message, from described inquiry response message, parse the physical address of described specified node, and set up mapping relations between described specified node and the described physical address, after being set simultaneously, ageing time also comprises: before not receiving first CC message, regularly send described query message to described specified node, if do not receive described inquiry response message more than 3 times continuously, then send the prompting link or dispose problematic alarm.
4. as the method for claim 1 or 2 or 3 described acquisition ethernet node physical addresss, it is characterized in that described query message is a multicast message, described inquiry response message is a unicast message.
5. device that obtains the ethernet node physical address, it is characterized in that described device comprises that searching module, query message sending module, query message receiver module, inquiry response message sending module, inquiry response message receiver module and mapping sets up module;
Describedly search the physical address that module is used to search specified node, and lookup result is sent to described query message sending module;
Described query message sending module is used for sending the query message that contains specified node information to described query message receiver module when the lookup result that receives does not find the physical address of specified node for expression;
Described query message receiver module is used to receive the query message that described query message sending module sends, and the query message of receiving is sent to described inquiry response message sending module;
Described inquiry response message sending module is used for the specified node information according to the query message of receiving, finds the physical address of specified node, and sends the inquiry response message that contains the specified node physical address to described inquiry response message receiver module;
Described inquiry response message receiver module is used to receive the inquiry response message that described inquiry response message sending module sends, and parses the physical address of specified node from the inquiry response message, this physical address is sent to described mapping set up module;
Described mapping is set up module and is used to receive the physical address that described inquiry response message receiver module sends, and sets up the mapping relations between this physical address and the specified node.
6. the device of acquisition ethernet node physical address as claimed in claim 5, it is characterized in that, described device also comprises the inspection module, whether the specified node physical address of the inquiry response message that described inspection module is used for checking that described inquiry response message receiver module receives is more than 1, if then send the alarm of configuration error.
7. the device of acquisition ethernet node physical address as claimed in claim 5, it is characterized in that, described device also comprises the alarm sending module, described alarm sending module was used for before not receiving first CC message, if the continuous inquiry response message of not receiving more than 3 times that described inquiry response message sending module sends of described inquiry response message receiver module then sends the prompting link or disposes problematic alarm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014026598A1 (en) * | 2012-08-13 | 2014-02-20 | 华为技术有限公司 | Method, device and system for acquiring endpoint mac address of maintenance entity group |
| CN105450686A (en) * | 2014-08-19 | 2016-03-30 | Tcl集团股份有限公司 | Method and device for establishing server cluster |
| CN107294780A (en) * | 2017-06-29 | 2017-10-24 | 重庆邮电大学 | Resources-type internet source of trouble localization method based on network monitoring |
| CN107800581A (en) * | 2016-09-01 | 2018-03-13 | 中兴通讯股份有限公司 | A kind of loop detection method of double layer network and double layer network |
-
2007
- 2007-02-12 CN CNB2007100049323A patent/CN100492990C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014026598A1 (en) * | 2012-08-13 | 2014-02-20 | 华为技术有限公司 | Method, device and system for acquiring endpoint mac address of maintenance entity group |
| CN105450686A (en) * | 2014-08-19 | 2016-03-30 | Tcl集团股份有限公司 | Method and device for establishing server cluster |
| CN105450686B (en) * | 2014-08-19 | 2019-12-13 | Tcl集团股份有限公司 | Method and device for establishing server cluster |
| CN107800581A (en) * | 2016-09-01 | 2018-03-13 | 中兴通讯股份有限公司 | A kind of loop detection method of double layer network and double layer network |
| CN107800581B (en) * | 2016-09-01 | 2022-03-18 | 中兴通讯股份有限公司 | Two-layer network and loopback detection method thereof |
| CN107294780A (en) * | 2017-06-29 | 2017-10-24 | 重庆邮电大学 | Resources-type internet source of trouble localization method based on network monitoring |
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| CN100492990C (en) | 2009-05-27 |
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