CN108600109A - A kind of message forwarding method and device - Google Patents
A kind of message forwarding method and device Download PDFInfo
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- CN108600109A CN108600109A CN201810224008.4A CN201810224008A CN108600109A CN 108600109 A CN108600109 A CN 108600109A CN 201810224008 A CN201810224008 A CN 201810224008A CN 108600109 A CN108600109 A CN 108600109A
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- message
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- route
- list item
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
Abstract
A kind of message forwarding method of the application offer and device, this method include：The first via of the second edge equipment transmission is received by notice message, the first via is carried the address information and ESI of the host by notice message；If the ESI is identical as the ESI that first edge equipment is host configuration, the first static forwarding list item is generated according to described address information；The first route withdraw message that second edge equipment is sent is received, first route withdraw message carries the address information of the host, and determines the corresponding first static forwarding list item of described address information；If being received in preset time window and the first matched message of static forwarding list item, and first the route withdraw message ESI and the first edge equipment that carry be that the ESI that the host configures is identical, the first static forwarding list item is adjusted to the first dynamic forwarding-table item, is E-Packeted according to the first dynamic forwarding-table item.By the technical solution of the application, reliability is improved, improves safety.
Description
Technical field
This application involves fields of communication technology, more particularly, to a kind of message forwarding method and device.
Background technology
EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) is two layers a kind of
VPN (Virtual Private Network, Virtual Private Network) technology, control plane use MP-BGP (Multi
Protocol-Border Gateway Protocol, Multiprotocol Border Gateway Protocol) notice routing iinformation, data plane use
VXLAN (Virtual eXtensible Local Area Network, expansible Virtual Local Area Network) packaged type forwarding report
Text.Wherein, VXLAN is a kind of IP based network, using " MAC (Media Access Control, media access control) in
The two-layer VPN technology of UDP (User Datagram Protocol, User Datagram Protocol) " packing forms, VXLAN can be with base
In existing service provider or enterprise IP network, two layers of interconnection are provided for the website of dispersion, and can be different tenants
The isolation of offer business.
In EVPN networks, in order to improve reliability, more ownership access networkings may be used, i.e. host is connect by interchanger
Enter multiple VTEP (VXLAN Tunnel End Point, VXLAN endpoint of a tunnel) equipment, it is assumed that access VTEP1 and VTEP2.
This group is off the net, after host is reached the standard grade, sends gratuitous ARP (Address Resolution Protocol, address resolution protocol) and disappears
Breath, it is assumed that gratuitous ARP message is transmitted to VTEP1 by interchanger, then VTEP1 generates forwarding-table item 1, and outgoing interface is directed toward host.This
Outside, address information is synchronized to VTEP2 by VTEP1 by advertising of route message, and VTEP2 generates forwarding-table item 2, and outgoing interface is directed toward master
Machine.
But when the VTEP1 forwarding-table items 1 generated are aging, route withdraw message can be sent to VTEP2 so that
VTEP2 cancels forwarding-table item 2.Then, if VTEP2 receives the data message that purpose is the host, due to no datagram
The matched forwarding-table item of text, to can not correctly transmit the data message.
Invention content
It is more for being provided for host that the application provides a kind of message forwarding method, first edge equipment and second edge equipment
Belonging to access service, the method is applied to first edge equipment, the method includes：
The first via of the second edge equipment transmission is received by notice message, the first via carries institute by notice message
State the address information and ethernet segment mark ESI of host；If the ESI and ESI that first edge equipment is host configuration
It is identical, then the first static forwarding list item is generated according to described address information；
The first route withdraw message that the second edge equipment is sent is received, first route withdraw message carries institute
The address information of host is stated, and determines the corresponding first static forwarding list item of described address information；
If received in preset time window with the matched message of the first static forwarding list item, and the first route withdraw disappears
It is identical as the ESI that first edge equipment is host configuration to cease the ESI carried, the first static forwarding list item is adjusted to
First dynamic forwarding-table item E-Packets according to the first dynamic forwarding-table item.
It is more for being provided for host that the application provides a kind of apparatus for forwarding message, first edge equipment and second edge equipment
Belong to access service, described device is applied to first edge equipment, and described device includes：
Receiving module, for receiving the first via of the second edge equipment transmission by notice message；Wherein, described first
Advertising of route message carries the address information and ethernet segment mark ESI of the host；
Generation module is used for when the ESI is identical as the ESI that the first edge equipment is host configuration, then
The first static forwarding list item is generated according to described address information；
The receiving module is additionally operable to receive the first route withdraw message that the second edge equipment is sent；Wherein, institute
State the address information that the first route withdraw message carries the host；
Determining module, for determining the corresponding first static forwarding list item of described address information；
Processing module, for ought receive within the preset time window with the matched message of the first static forwarding list item,
And when the ESI and the first edge equipment identical for the ESI of host configuration of the first route withdraw message carrying, then
The first static forwarding list item is adjusted to the first dynamic forwarding-table item；
Sending module, for being E-Packeted according to the first dynamic forwarding-table item.
By above technical scheme as it can be seen that in the embodiment of the present application, first edge equipment is receiving second edge equipment hair
After the advertising of route message sent, static forwarding list item can be generated according to the address information of host；First edge equipment is receiving
After the route withdraw message sent to second edge equipment, if being received in preset time window matched with the static forwarding list item
Message does not delete the static forwarding list item not instead of directly, static forwarding list item is adjusted to dynamic forwarding-table item, and according to dynamic
State forwarding-table item E-Packets, that is to say, that after first edge equipment receives the message that purpose is the host, it is local exist with
The matched dynamic forwarding-table item of the message, and the message is correctly transmitted according to the dynamic forwarding-table item, improve reliability and peace
Quan Xing.
Description of the drawings
It, below will be to the application in order to clearly illustrate the embodiment of the present application or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is only some embodiments described in the application, for those of ordinary skill in the art, can also be according to this Shen
Please these attached drawings of embodiment obtain other attached drawings.
Fig. 1 is the application scenarios schematic diagram in a kind of embodiment of the application；
Fig. 2 is the flow chart of the message forwarding method in a kind of embodiment of the application；
Fig. 3 is the structure chart of the apparatus for forwarding message in a kind of embodiment of the application；
Fig. 4 is the hardware structure diagram of the edge device in a kind of embodiment of the application.
Specific implementation mode
In term used in this application merely for the sake of the purpose of description specific embodiment, and unrestricted the application.This Shen
Please it is also intended to including most forms with the "an" of the singulative used in claims, " described " and "the", unless
Context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to comprising one or more
Associated list items purpose any or all may combine.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, in addition, used word " if " can be construed to " ... when " or " when ... "
Or " in response to determination ".
The embodiment of the present application proposes that a kind of message forwarding method, this method can be applied to access networking using more ownership
EVPN networks.In EVPN networks, in order to improve reliability, can be by least two edges equipment (such as VTEP equipment)
Host (such as VM (Virtual Machine, virtual machine), physical server etc.) provides more ownership access services.Referring to Fig. 1 institutes
Show, be the application scenarios schematic diagram of the embodiment of the present application, to provide more ownership access services as host by two edge devices
For, in practical applications, more ownership access services can also be provided for host by more edge devices, this is not limited
System.
Shown in Figure 1, edge device 131 and edge device 132 are used to provide more ownership access services for host 111,
Link, edge device 132 between edge device 131 and host 111 and the link between host 111, are properly termed as ES
(Ethernet Segment, ethernet segment), and ESI (Ethernet Segment Identifier, Ethernet can be passed through
Segment identification) identify ES.Link, edge device 132 between edge device 131 and host 111 and the link between host 111
Corresponding identical ESI, it is assumed that the ESI of link is 1 between edge device 131 and host 111, edge device 132 and host 111 it
Between link ESI be 1.
It is shown in Figure 1, can be configured on edge device 131 VXLAN business and AC (Attachment Circuit,
Access circuit) 1311, and VXLAN business and AC1321 are configured on edge device 132.
Wherein, the VXLAN business configured on edge device 131 may include：VSI(Virtual Switch
Instance, virtual switch instance) it is vpnb, VXLAN marks are vxlan 100.In addition, configured on edge device 132
VXLAN business is identical as the VXLAN business on edge device 131.
Wherein, the AC1311 configured on edge device 131 may include：Physical port is ten1/0/1, Service Instance
Be 10, VSI it is vpnb, the meaning of this AC1311 is：The data message entered from physical port ten1/0/1, if carried
VLAN be tag 10, then can be forwarded into vpnb, and since vpnb corresponding VXLAN marks are vxlan 100, because
This, can complete the mapping that VLAN tag 10 arrive vxlan 100.In addition, the AC1321 configured on edge device 132 can be with
It is identical as AC1311.
Wherein, AC1311 further includes ESI 1, indicates that the corresponding links of AC1311 are the link that ESI is 1, i.e. edge device
Link between 131 and host 111.In addition, AC1321 further includes ESI 1, the corresponding links of expression AC1321 are that ESI is 1
Link between link, i.e. edge device 132 and host 111.
It is shown in Figure 1, the tunnels VXLAN A is also set up between edge device 133 and edge device 131, and at edge
The tunnels VXLAN B has been also set up between equipment 133 and edge device 132.Wherein, for the tunnels the VXLAN A's and tunnels VXLAN B
Mode is established, is repeated no more in the present embodiment.
Under above application scene, the message forwarding method in the embodiment of the present application may comprise steps of：
Step 311, after host 111 is reached the standard grade, gratuitous ARP message can be sent, which can carry host
111 address information, such as the IP address 111 and MAC Address 111 of host 111.
Step 312, which is sent to edge and set by interchanger 121 after receiving the gratuitous ARP message
Standby 131 or edge device 132, subsequently for being sent to edge device 131.
Wherein, interchanger 121 can select an edge device from edge device 131 and edge device 132, such as random
Selection is selected using hash algorithm, is not limited to this selection mode.Assuming that selection edge device 131, then interchanger 121 can
The gratuitous ARP message is sent to edge device 131.
Step 313, edge device 131 can parse after receiving the gratuitous ARP message from the gratuitous ARP message
Go out the address information of host 111, and dynamic forwarding-table item is generated according to the address information.
In one example, the forwarding-table item in the embodiment of the present application can divide into dynamic forwarding-table item and static turn
Forwarding list item, dynamic forwarding-table item and static forwarding list item may each be ARP forwarding-table items or MAC forwarding-table items etc..But
The difference of dynamic forwarding-table item and static forwarding list item can be：Dynamic forwarding-table item includes ageing timer, therefore, dynamic
Forwarding-table item may be deleted due to aging, and static forwarding list item does not include ageing timer, therefore, static forwarding list item
It will not be deleted due to aging.
In this step, it is assumed that receive gratuitous ARP message by AC1311, and host is parsed from gratuitous ARP message
Therefore 111 IP address 111 and MAC Address 111 can generate dynamic forwarding-table item shown in table 1.Certainly, table 1 is one
A example can also include other contents, without limitation.
Table 1
| IP address | MAC Address | Outgoing interface | Ageing timer |
| IP address 111 | MAC Address 111 | AC1311 | 50 milliseconds |
Step 314, edge device 131 sends advertising of route message (such as respectively to edge device 132 and edge device 133
Bgp route advertisement message), which can carry the IP address 111 and MAC Address 111 of host 111, the routing
Notice message can also carry the corresponding ESI of AC1311 1.
Step 315, edge device 132 can solve after receiving the advertising of route message from the advertising of route message
The address information of host 111 is precipitated, and static forwarding list item is generated according to the address information.
In one example, edge device 132 generates static forwarding list item according to the address information, may include：If should
Advertising of route message carries ESI, and the ESI that the ESI of advertising of route message carrying is configured with edge device 132 for host 111
It is identical, then static forwarding list item can be generated according to the address information, the outgoing interface of the static forwarding list item is that the ESI is corresponding
AC.If in addition, the advertising of route message does not carry ESI, alternatively, the ESI that the advertising of route message carries is with edge device 132
The ESI that host 111 configures is different, then can generate dynamic forwarding-table item according to the address information, which goes out
Interface can be between edge device 132 and edge device 131 the tunnels VXLAN, this process is no longer repeated in detail.
In this step, it is assumed that edge device 132 parses the IP address 111 and MAC of host 111 from advertising of route message
Address 111, and ESI 1 is parsed from the advertising of route message, it is also since edge device 132 is the ESI that host 111 configures
ESI 1, therefore, edge device 132 can generate static forwarding list item shown in table 2.Certainly, table 2 is an example, may be used also
It is without limitation to include other contents.From table 2 it can be seen that the outgoing interface of the static forwarding list item can be that ESI 1 is right
The AC1321 answered.
Table 2
| IP address | MAC Address | Outgoing interface |
| IP address 111 | MAC Address 111 | AC1321 |
Step 316, edge device 133 can solve after receiving the advertising of route message from the advertising of route message
The address information of host 111 is precipitated, and host forwarding-table item is generated according to the address information.
Wherein, which can be dynamic forwarding-table item, can also be static forwarding list item, not limit this
System, for the convenience of description, subsequently by taking the host forwarding-table item is dynamic forwarding-table item as an example.
Wherein, edge device 133 can also parse after receiving the advertising of route message from the advertising of route message
Go out ESI 1, since edge device 131 and edge device 132 are 1 corresponding next-hops of ESI, edge device 133 exists
When generating host forwarding-table item according to the address information, list item of equal value can be formed, outgoing interface is respectively edge device 133 and edge
The tunnels the VXLAN B between the tunnels VXLAN A, edge device 133 and edge device 132 between equipment 131.Ginseng is shown in Table 3,
For the example of host forwarding-table item, certainly, table 3 is an example, can also include other contents, without limitation.
Table 3
Step 317, when host 112 sends datagram to host 111, edge device 133 receives the data message, profit
Host forwarding table shown in destination address (such as purpose IP address and/or target MAC (Media Access Control) address) inquiry table 3 with the data message
, it is the tunnels the VXLAN A and tunnels VXLAN B to obtain outgoing interface.
Step 318, edge device 133 selects a tunnel VXLAN from the tunnels VXLAN A and the tunnels VXLAN B, such as selects
The tunnels VXLAN B, and sent datagram by the tunnels VXLAN B.
Wherein, edge device 133 may be used random algorithm or use hash algorithm, from the tunnels VXLAN A and VXLAN tunnels
A tunnel VXLAN is selected in road B, this selection mode is not limited, it is assumed that selection VXLAN tunnel B then pass through VXLAN tunnels
Data message is sent to edge device 132 by road B.
Step 319, edge device 132 is inquired after receiving the data message using the destination address of the data message
Static forwarding list item shown in table 2, it is AC1321 to obtain outgoing interface, and data message is sent to host 111 by AC1321.
So far, the data message of host 112 is successfully transmitted to host 111.
Wherein, edge device 133 can also be the tunnels data message packaging V XLAN head when sending datagram, and
The data message for being packaged with the tunnels VXLAN head is sent to edge device 132.Edge device 132 is packaged with VXLAN receiving
After the data message of tunnel head, first the tunnels VXLAN head is decapsulated, and utilizes the destination of the data message after decapsulation
Static forwarding list item shown in location inquiry table 2.
In above process, host 112 is sent to the data message of host 111, is to be sent to master by edge device 132
Machine 111, and it is sent to host 111 without edge device 131, therefore, the dynamic forwarding-table item (ginseng that edge device 131 generates
It is shown in Table 1), it can be deleted due to aging.After the dynamic forwarding-table item shown in table 1 is deleted by edge device 131, on
Stating message forwarding method can also include：
Step 320, edge device 131 sends route withdraw message (such as respectively to edge device 132 and edge device 133
BGP route withdraw messages), which can carry the IP address 111 and MAC Address 111 of host 111, the routing
Revocation message can also carry the corresponding ESI of AC1311 1.
Step 321, edge device 132 can solve after receiving the route withdraw message from the route withdraw message
The address information of host 111 is precipitated, and determines the corresponding static forwarding list item of the address information.
Step 322, if edge device 132 receives in preset time (preset time can be configured rule of thumb)
To with the matched message of static forwarding list item, then the static forwarding list item can be adjusted to dynamic forwarding-table item, and according to
The dynamic forwarding-table item forwards the message.In addition, if edge device 132 does not receive and the static forwarding within the preset time window
The matched message of list item can then delete the static forwarding list item.
In one example, which is adjusted to dynamic forwarding-table item, may include：If the route withdraw
Message carries ESI, and the ESI that the route withdraw message carries is identical as the ESI that edge device 132 is the configuration of host 111, then may be used
The static forwarding list item is adjusted to dynamic forwarding-table item, the outgoing interface of the dynamic forwarding-table item is the corresponding AC of the ESI.This
Outside, if the route withdraw message does not carry ESI, alternatively, ESI and edge device 132 that the route withdraw message carries are host
The ESI of 111 configurations is different, then the static forwarding list item is adjusted to dynamic forwarding-table item by refusal, but deletes the static forwarding
List item.
In this step, it is assumed that edge device 132 parses 111 He of IP address of host 111 from route withdraw message
MAC Address 111, and ESI 1 is parsed from the route withdraw message, since edge device 132 is the ESI that host 111 configures
It is also ESI 1, therefore, edge device 132 can determine static forwarding list item corresponding with IP address 111 and MAC Address 111,
As shown in table 2, and by the static forwarding list item it is adjusted to dynamic forwarding-table item, as shown in table 4.Certainly, table 4 is one and shows
Example can also include other contents, without limitation.From table 4, it can be seen that the outgoing interface of the dynamic forwarding-table item can be
1 corresponding AC1321 of ESI.In addition, the dynamic forwarding-table item may include ageing timer, when the aging of the ageing timer
Between can rule of thumb be configured, such as 50 milliseconds, this ageing time is not limited.
Table 4
| IP address | MAC Address | Outgoing interface | Ageing timer |
| IP address 111 | MAC Address 111 | AC1321 | 50 milliseconds |
By contrast table 4 and table 2 as can be seen that dynamic forwarding-table item is compared with static forwarding list item, more aging timings
Device.In conclusion the static forwarding list item to be adjusted to the process of dynamic forwarding-table item, may include：Delete the static forwarding
List item, and dynamic is generated according to the address information (IP address and MAC Address of such as host 111) that the route withdraw message carries and is turned
Forwarding list item, which may include ageing timer；Alternatively, adding aging timing in the static forwarding list item
Device, to obtain dynamic forwarding-table item.
In the above-described embodiments, edge device 132 is after receiving route withdraw message, if being received in preset time window
It is the static forwarding list item to be adjusted to dynamic forwarding-table item, rather than it is quiet to delete this with the matched message of static forwarding list item
State forwarding-table item, aforesaid way can be to avoid the error handles of data message.
For example, after edge device 132 receives route withdraw message, if directly deleting the static forwarding list item, it is directed to
Host 112 is sent to the data message of host 111, if the data message is sent to edge device 132 by edge device 133, by
In edge device 132 not with the matched static forwarding list item of the data message, therefore can abandon the data message or
Broadcast the data message.It for the scheme for abandoning the data message, then can lead to the loss of data message, influence user and use body
It tests.And for the scheme for broadcasting the data message, then the data message can be broadcast to multiple main frames, safety can not ensure,
And massive band width can be consumed.
Unlike aforesaid way, in the present embodiment, after edge device 132 receives route withdraw message, if will
The static forwarding list item is adjusted to dynamic forwarding-table item, then the data message that host 112 is sent to host 111 is directed to, if edge
The data message is sent to edge device 132 by equipment 133, since edge device 132 is in the presence of matched dynamic with the data message
State forwarding-table item, therefore the data message is forwarded according to the dynamic forwarding-table item, thus by the data message forwarding to host
111, aforesaid way will not abandon the data message, will not broadcast the data message, to avoid the loss of data message, carry
High user experience ensures safety furthermore, it is possible to avoid the data message being broadcast to multiple main frames, avoids consumption big
Measure bandwidth.
Step 323, after static forwarding list item is adjusted to dynamic forwarding-table item by edge device 132, to 131 He of edge device
Edge device 133 sends advertising of route message, which can carry the IP address 111 and MAC Address of host 111
111, which also carries the corresponding ESI of AC1321 1.
After static forwarding list item is adjusted to dynamic forwarding-table item by edge device 132, after the dynamic forwarding-table item aging,
Edge device 132 can also delete the dynamic forwarding-table item, and send route withdraw to edge device 131 and edge device 133
Message is handled referring to step 320 and subsequent step, and it is no longer repeated.
Step 324, edge device 131 can solve after receiving the advertising of route message from the advertising of route message
The address information of host 111 is precipitated, and static forwarding list item can be generated according to the address information.
In one example, edge device 131 generates static forwarding list item according to the address information, may include：If should
Advertising of route message carries ESI, and the ESI that the ESI of advertising of route message carrying is configured with edge device 131 for host 111
It is identical, then static forwarding list item can be generated according to the address information, the outgoing interface of the static forwarding list item is that the ESI is corresponding
AC.If in addition, the advertising of route message does not carry ESI, alternatively, the ESI that the advertising of route message carries is with edge device 131
The ESI that host 111 configures is different, then can generate dynamic forwarding-table item according to the address information, which goes out
Interface can be between edge device 131 and edge device 132 the tunnels VXLAN, this process is no longer repeated in detail.
In this step, it is assumed that edge device 131 parses the IP address 111 and MAC of host 111 from advertising of route message
Address 111, and ESI 1 is parsed from advertising of route message, it is ESI since edge device 131 is the ESI that host 111 configures
1, therefore edge device 131 generates static forwarding list item shown in table 5.
Table 5
| IP address | MAC Address | Outgoing interface |
| IP address 111 | MAC Address 111 | AC1311 |
Step 325, edge device 133 can solve after receiving the advertising of route message from the advertising of route message
The address information of host 111 is precipitated, and according to the address information maintenance host forwarding-table item.
Wherein, edge device 133 can parse ESI after receiving advertising of route message from advertising of route message
1, since edge device 131 and edge device 132 are 1 corresponding next-hops of ESI, edge device 133 should in basis
When address information maintenance host forwarding-table item, there can be list item of equal value, outgoing interface is respectively edge device 133 and edge device
The tunnels the VXLAN B between the tunnels VXLAN A, edge device 133 and edge device 132 between 131, ginseng are shown in Table 3, based on
The example of machine forwarding-table item.
In step 320, edge device 131 has sent route withdraw message to edge device 133, in step 323, side
Edge equipment 132 has sent advertising of route message to edge device 133, for the route withdraw message and the advertising of route message
Reception condition illustrates step 325 below in conjunction with three kinds of situations.
Situation one, edge device 133 first receive route withdraw message, after receive advertising of route message.
In one example, edge device 133 can be deleted from local shown in table 3 after receiving route withdraw message
Host forwarding-table item.After deleting the host forwarding-table item, edge device 133, can be with after receiving advertising of route message
Host forwarding-table item shown in table 3 is regenerated according to the advertising of route message.
Situation two, edge device 133 receive advertising of route message and route withdraw message simultaneously.
In one example, when edge device 131 sends route withdraw message to edge device 132 and edge device 133,
Sequence number can also be carried in the route withdraw message, such as sequence number 100.Edge device 132 can record route withdraw message
Sequence number 100, and when edge device 132 sends advertising of route message to edge device 131 and edge device 133, the routing
Sequence number can also be carried in notice message, and the sequence number carried in advertising of route message is more than in route withdraw message and carries
Sequence number, such as sequence number 101.
Further, it is logical due to routeing after edge device 133 receives advertising of route message and route withdraw message at the same time
It accuses the sequence number carried in message and is more than the sequence number carried in route withdraw message, therefore, edge device 133 can abandon routing
Revocation message, and handled according to advertising of route message.Due to the local address letter for having existed the carrying of advertising of route message
Corresponding host forwarding-table item is ceased, therefore, host forwarding-table item shown in 133 reservation table 3 of edge device continues to tie up locally
Protect host forwarding-table item shown in table 3.
Situation three, edge device 133 first receive advertising of route message, after receive route withdraw message.
In one example, edge device 133 is logical due to locally having existed routing after receiving advertising of route message
The corresponding host forwarding-table item of address information that message carries is accused, therefore, host shown in 133 reservation table 3 of edge device forwards
List item is locally continuing host forwarding-table item shown in Maintenance Table 3.Then, edge device 133 disappears receiving route withdraw
After breath, since the sequence number carried in advertising of route message is more than the sequence number carried in route withdraw message (referring to situation two
It is shown), therefore, edge device 133 can abandon route withdraw message, not have to according to the route withdraw message to host forwarding-table item
Carry out delete processing.
Wherein, in order to carry sequence number in advertising of route message or route withdraw message, then sequence number can carry
It is migrated in attribute in advertising of route message or route withdraw message extended community, it is without limitation.
By above technical scheme as it can be seen that in the embodiment of the present application, edge device 132 is receiving the transmission of edge device 131
Advertising of route message after, can according to the address information of host 111 generate static forwarding list item；Edge device 132 is receiving
After the route withdraw message sent to edge device 131, if being received in preset time window matched with the static forwarding list item
Message does not delete the static forwarding list item not instead of directly, static forwarding list item is adjusted to dynamic forwarding-table item, and according to dynamic
State forwarding-table item E-Packets, that is to say, that after edge device 132 receives the message that purpose is the host, it is local exist with
The matched dynamic forwarding-table item of the message, and the message is correctly transmitted according to the dynamic forwarding-table item, improve reliability and peace
Quan Xing.
Based on similarly applying conceiving with the above method, the embodiment of the present application also proposes a kind of message forwarding method, can be with
Applied to the EVPN networks for accessing networking using more ownership, and the first edge equipment of EVPN networks and second edge equipment are used for
More ownership access services are provided for host.Shown in Figure 1, first edge equipment is edge device 131, and second edge equipment is
Edge device 132, alternatively, first edge equipment is edge device 132, second edge equipment is edge device 131.For convenience
Description, in the present embodiment, using first edge equipment as edge device 132, second edge equipment for for edge device 131 into
Row explanation.
It is shown in Figure 2, it is the flow chart of above-mentioned message forwarding method, this method may comprise steps of：
Step 201, the first via that first edge equipment reception second edge equipment is sent is by notice message, and the first via is by leading to
Address information and ESI that message carries host are accused, if ESI and first edge equipment that the first via is carried by notice message are described
The ESI of host configuration is identical, then generates the first static forwarding list item according to the address information, which goes out
Interface is the corresponding AC of ESI.If in addition, the first via does not carry ESI by notice message, alternatively, the first via is by notice message
The ESI of carrying is different from the ESI that first edge equipment is host configuration, then can generate dynamic forwarding table according to the address information
, the tunnels VXLAN that the outgoing interface of the dynamic forwarding-table item can be between first edge equipment and second edge equipment.
Wherein, referring to shown in step 311- steps 315, it is logical that second edge equipment can send routing to first edge equipment
Accuse message (in order to distinguish conveniently, which can be known as the first via by notice message), and first edge equipment
The address information that can be carried by notice message according to the first via generates static forwarding list item and (in order to distinguish conveniently, can incite somebody to action
The static forwarding list item is known as the first static forwarding list item).
Step 202, first edge equipment receives the first route withdraw message that second edge equipment is sent, and the first via is by removing
The address information that message carries host is sold, determines the corresponding first static forwarding list item of the address information.
Step 203, if first edge equipment receive within the preset time window it is matched with the first static forwarding list item
Message, and ESI and first edge equipment that the first route withdraw message carries are that the ESI that host configures is identical, then first edge
The first static forwarding list item is adjusted to the first dynamic forwarding-table item by equipment, and is forwarded and reported according to the first dynamic forwarding-table item
The outgoing interface of text, the first dynamic forwarding-table item is the corresponding AC of the ESI.In addition, if first edge equipment is in preset time window
Do not receive inside with the matched message of the first static forwarding list item, then can directly delete the first static forwarding list item.
If in addition, first route withdraw message does not carry ESI, alternatively, the ESI that carries of first route withdraw message with
First edge equipment is that the ESI of host configuration is different, then can delete the static forwarding list item.
Wherein, which is adjusted to the first dynamic forwarding-table item by first edge equipment, may include：
First edge equipment deletes the first static forwarding list item, and is generated according to the address information that first route withdraw message carries
First dynamic forwarding-table item, which includes ageing timer；Alternatively, in the first static forwarding list item
Ageing timer is added, the first dynamic forwarding-table item is obtained.
Wherein, referring to shown in step 320- steps 322, second edge equipment can send routing to first edge equipment and remove
The route withdraw message (in order to distinguish conveniently, can be known as the first route withdraw message) by pin message, and first edge equipment
The corresponding static forwarding list item of first route withdraw message can be adjusted to dynamic forwarding-table item (in order to distinguish conveniently, can be with
The dynamic forwarding-table item is known as the first dynamic forwarding-table item).
It, can also be to the second side after first static forwarding list item is adjusted to the first dynamic forwarding-table item by first edge equipment
Edge equipment sends secondary route notice message, and secondary route notice message carries the address information of host, so that second edge is set
It is standby that second static forwarding list item is generated according to the address information.And/or it sends third advertising of route to third edge device and disappears
Breath, third advertising of route message carries the address information of host, so that third edge device is according to the address information maintenance host
The outgoing interface of forwarding-table item, the host forwarding-table item includes：Tunnel, third between third edge device and first edge equipment
Tunnel between edge device and second edge equipment.Wherein, the first route withdraw message also carries sequence number, and third routing is logical
It accuses message and also carries sequence number, the sequence number that third advertising of route message carries is more than the sequence that the first route withdraw message carries
Number.
Wherein, referring to shown in step 323- steps 325, it is logical that first edge equipment can send routing to second edge equipment
Accuse message (in order to distinguish conveniently, which can be known as secondary route notice message), and second edge equipment
The address information that can be carried according to the secondary route notice message generates static forwarding list item and (in order to distinguish conveniently, can incite somebody to action
The static forwarding list item is known as the second static forwarding list item).
In addition, first edge equipment can be sent to third edge device (such as edge device 133) advertising of route message (for
It is convenient to distinguish, which can be known as to third advertising of route message), and third edge device can be according to this
The address information maintenance host forwarding-table item that third advertising of route message carries.
In one example, if first edge equipment receives the ARP message of host transmission, and the ARP message carries master
The address information of machine can then generate the second dynamic forwarding-table item according to the address information, and be taken to the transmission of second edge equipment
The 4th advertising of route message with the address information；In addition, after the second dynamic forwarding-table item aging, first edge equipment is also
It can delete the second dynamic forwarding-table item, and send to second edge equipment and to carry the secondary route revocation of the address information and disappear
Breath, no longer repeats this process in detail.
By above technical scheme as it can be seen that in the embodiment of the present application, first edge equipment is receiving second edge equipment hair
After the advertising of route message sent, static forwarding list item can be generated according to the address information of host；First edge equipment is receiving
After the route withdraw message sent to second edge equipment, if being received in preset time window matched with the static forwarding list item
Message does not delete the static forwarding list item not instead of directly, static forwarding list item is adjusted to dynamic forwarding-table item, and according to dynamic
State forwarding-table item E-Packets, that is to say, that after first edge equipment receives the message that purpose is the host, it is local exist with
The matched dynamic forwarding-table item of the message, and the message is correctly transmitted according to the dynamic forwarding-table item, improve reliability and peace
Quan Xing.
Based on similarly applying conceiving with the above method, the embodiment of the present application also proposes a kind of apparatus for forwarding message, first
Edge device and second edge equipment are used to provide more ownership access services for host, and described device is set applied to first edge
It is standby, it is shown in Figure 3, it is the structure chart of described device, described device includes：
Receiving module 301, for receiving the first via of the second edge equipment transmission by notice message；Wherein, described
The first via carries the address information of the host by notice message and ethernet segment identifies ESI；
Generation module 302 is used for when the ESI is identical as the ESI that the first edge equipment is host configuration,
The first static forwarding list item is then generated according to described address information；
The receiving module 301 is additionally operable to receive the first route withdraw message that the second edge equipment is sent；Its
In, first route withdraw message carries the address information of the host；
Determining module 303, for determining the corresponding first static forwarding list item of described address information；
Processing module 304, for that ought receive within the preset time window and the matched report of the first static forwarding list item
Text, and the ESI that first route withdraw message carries is identical as the ESI that the first edge equipment is host configuration
When, then the first static forwarding list item is adjusted to the first dynamic forwarding-table item；
Sending module 305, for being E-Packeted according to the first dynamic forwarding-table item.
The processing module 304 is specifically used when the first static forwarding list item is adjusted to the first dynamic forwarding-table item
In：The first static forwarding list item is deleted, and is generated according to the described address information that first route withdraw message carries
First dynamic forwarding-table item, the first dynamic forwarding-table item includes ageing timer；Alternatively, in the first static forwarding table
Ageing timer is added in, obtains the first dynamic forwarding-table item.
The first static forwarding list item is adjusted to also to use after the first dynamic forwarding-table item by the sending module 305
In：Secondary route notice message is sent to second edge equipment, the secondary route notice message carries the address of the host
Information, so that second edge equipment generates the second static forwarding list item according to described address information；And/or it is set to third edge
Preparation send third advertising of route message, the third advertising of route message to carry the address information of the host, so that described
Three edge devices are according to described address maintenance of information host forwarding-table item；Wherein, the outgoing interface of the host forwarding-table item includes：
Tunnel, the third edge device between the third edge device and the first edge equipment are set with the second edge
Tunnel between standby.
In one example, sequence number, the third advertising of route message are also carried in first route withdraw message
In also carry sequence number, the sequence number carried in the third advertising of route message, which is more than in first route withdraw message, to be taken
The sequence number of band.
Edge device (such as first edge equipment) provided by the embodiments of the present application, for hardware view, hardware structure shows
Intention may refer to shown in Fig. 4.Including：Machine readable storage medium and processor, wherein：
Machine readable storage medium：Store instruction code.
Processor：Communicated with machine readable storage medium, read and execute stored in machine readable storage medium it is described
Instruction code realizes message forwarding operation disclosed in the application above-mentioned example.
Here, machine readable storage medium can be any electronics, magnetism, optics or other physical storage devices, can be with
Including or storage information, such as executable instruction, data, etc..For example, machine readable storage medium can be：RAM(Radom
Access Memory, random access memory), volatile memory, nonvolatile memory, flash memory, memory driver is (as hard
Disk drive), solid state disk, any kind of storage dish (such as CD, dvd) either similar storage medium or they
Combination.
System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity,
Or it is realized by the product with certain function.A kind of typically to realize that equipment is computer, the concrete form of computer can
To be personal computer, laptop computer, cellular phone, camera phone, smart phone, personal digital assistant, media play
In device, navigation equipment, E-mail receiver/send equipment, game console, tablet computer, wearable device or these equipment
The combination of arbitrary several equipment.
For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each unit is realized can in the same or multiple software and or hardware when application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes computer usable program code that the embodiment of the present application, which can be used in one or more,
The computer implemented in computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of program product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It is generally understood that being realized by computer program instructions each in flowchart and/or the block diagram
The combination of flow and/or box in flow and/or box and flowchart and/or the block diagram.These computer journeys can be provided
Sequence instruct to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor with
Generate a machine so that the instruction generation executed by computer or the processor of other programmable data processing devices is used for
Realize the dress for the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
It sets.
Computer or the processing of other programmable datas can be guided to set moreover, these computer program instructions can also be stored in
In standby computer-readable memory operate in a specific manner so that instruction stored in the computer readable memory generates
Manufacture including command device, the command device are realized in one flow of flow chart or multiple flows and/or block diagram one
The function of being specified in a box or multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer
Or the instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram
The step of function of being specified in one box or multiple boxes.
Above is only an example of the present application, it is not intended to limit this application.For those skilled in the art
For, the application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (11)
1. a kind of message forwarding method, which is characterized in that first edge equipment and second edge equipment are more for being provided for host
Belonging to access service, the method is applied to first edge equipment, the method includes：
The first via of the second edge equipment transmission is received by notice message, the first via carries the master by notice message
The address information and ethernet segment of machine identify ESI；If the ESI is identical as the ESI that first edge equipment is host configuration,
The first static forwarding list item is then generated according to described address information；
The first route withdraw message that the second edge equipment is sent is received, first route withdraw message carries the master
The address information of machine, and determine the corresponding first static forwarding list item of described address information；
If received in preset time window with the matched message of the first static forwarding list item, and the first route withdraw message is taken
The ESI of band is identical as the ESI that first edge equipment is host configuration, and the first static forwarding list item is adjusted to first
Dynamic forwarding-table item E-Packets according to the first dynamic forwarding-table item.
2. according to the method described in claim 1, it is characterized in that,
The outgoing interface of the first static forwarding list item is the corresponding access circuit AC of the ESI；
The outgoing interface of the first dynamic forwarding-table item is the corresponding AC of the ESI.
3. according to the method described in claim 1, it is characterized in that,
It is described that the first static forwarding list item is adjusted to the first dynamic forwarding-table item, including：
The first static forwarding list item is deleted, and is generated according to the described address information that first route withdraw message carries
First dynamic forwarding-table item, the first dynamic forwarding-table item includes ageing timer；Alternatively,
Ageing timer is added in the first static forwarding list item, obtains the first dynamic forwarding-table item.
4. according to the method described in claim 1, it is characterized in that,
It is described the first static forwarding list item is adjusted to the first dynamic forwarding-table item after, further include：
Secondary route notice message is sent to second edge equipment, the secondary route notice message carries the address of the host
Information, so that second edge equipment generates the second static forwarding list item according to described address information.
5. according to the method described in claim 1, it is characterized in that,
It is described the first static forwarding list item is adjusted to the first dynamic forwarding-table item after, further include：
Third advertising of route message is sent to third edge device, the third advertising of route message carries the address of the host
Information, so that the third edge device is according to described address maintenance of information host forwarding-table item；Wherein, the host forwarding table
Outgoing interface include：Tunnel, the third edge device between the third edge device and the first edge equipment
With the tunnel between the second edge equipment.
6. according to the method described in claim 5, it is characterized in that, also carry sequence number in first route withdraw message,
Sequence number is also carried in the third advertising of route message, the sequence number carried in the third advertising of route message is more than described
The sequence number carried in first route withdraw message.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
If receiving the Address Resolution Protocol ARP message that the host is sent, and the ARP message carries the address of the host
Information then generates the second dynamic forwarding-table item according to described address information, and is sent described in carrying to the second edge equipment
4th advertising of route message of address information；
After the second dynamic forwarding-table item aging, the second dynamic forwarding-table item is deleted, and set to the second edge
Preparation send the secondary route revocation message for carrying described address information.
8. a kind of apparatus for forwarding message, which is characterized in that first edge equipment and second edge equipment are more for being provided for host
Belong to access service, described device is applied to first edge equipment, and described device includes：
Receiving module, for receiving the first via of the second edge equipment transmission by notice message；Wherein, the first via by
Notice message carries the address information and ethernet segment mark ESI of the host；
Generation module is used for when the ESI is identical as the ESI that the first edge equipment is host configuration, then basis
Described address information generates the first static forwarding list item；
The receiving module is additionally operable to receive the first route withdraw message that the second edge equipment is sent；Wherein, described
One route withdraw message carries the address information of the host；
Determining module, for determining the corresponding first static forwarding list item of described address information；
Processing module, for that ought receive within the preset time window and the matched message of the first static forwarding list item, and institute
When stating the ESI and the first edge equipment identical for the ESI of host configuration of the first route withdraw message carrying, then by institute
It states the first static forwarding list item and is adjusted to the first dynamic forwarding-table item；
Sending module, for being E-Packeted according to the first dynamic forwarding-table item.
9. device according to claim 8, which is characterized in that
The processing module is specifically used for when the first static forwarding list item is adjusted to the first dynamic forwarding-table item：It deletes
The first static forwarding list item, and the first dynamic is generated according to the described address information that first route withdraw message carries
Forwarding-table item, the first dynamic forwarding-table item includes ageing timer；Alternatively, being added in the first static forwarding list item
Ageing timer obtains the first dynamic forwarding-table item.
10. device according to claim 8, which is characterized in that
The first static forwarding list item is adjusted to be additionally operable to after the first dynamic forwarding-table item by the sending module：To second
Edge device sends secondary route notice message, and the secondary route notice message carries the address information of the host, so that
Second edge equipment generates the second static forwarding list item according to described address information；And/or send third to third edge device
Advertising of route message, the third advertising of route message carry the address information of the host, so that the third edge device
According to described address maintenance of information host forwarding-table item；Wherein, the outgoing interface of the host forwarding-table item includes：The third side
Tunnel, the third edge device between edge equipment and the first edge equipment and the tunnel between the second edge equipment
Road.
11. device according to claim 10, which is characterized in that also carry sequence in first route withdraw message
Number, sequence number is also carried in the third advertising of route message, the sequence number carried in the third advertising of route message is more than
The sequence number carried in first route withdraw message.
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