CN111092822A - Method for balancing pw linear protection forwarding load of vpls - Google Patents
Method for balancing pw linear protection forwarding load of vpls Download PDFInfo
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- CN111092822A CN111092822A CN201911352692.5A CN201911352692A CN111092822A CN 111092822 A CN111092822 A CN 111092822A CN 201911352692 A CN201911352692 A CN 201911352692A CN 111092822 A CN111092822 A CN 111092822A
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- link
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- vpls
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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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
- H04L45/22—Alternate 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
- H04L45/24—Multipath
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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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method for load balancing and forwarding of pw linear protection function traffic of vpls, which comprises the following steps: establishing a linear protection networking environment of vpls; checking and determining that the peer tail nodes of the main link pw and the standby link pw in the vpls instance are the same device; enabling a load balancing function on the pair of pw linear protection groups; when the equipment detects that the aps state is NO _ REQUEST _ NULL, the flow coming from the ac is subjected to load balancing calculation according to an algorithm and is respectively forwarded to tail node equipment from a main link pw and a standby link pw; when the equipment detects that the aps state is SIGNAL _ FAIL _ W, switching all the flow with balanced load on the main link pw and the standby link to the standby link pw for forwarding; when the equipment detects that the aps state is SIGNAL _ FAIL _ P, all the flow with balanced load on the main link pw and the standby link are switched to the main link pw for forwarding. The method for balancing the flow forwarding load of the pw linear protection of the vpls can solve the problem of unbalanced use of device resources on the pw paths of the main and standby links of the pw protection group.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to a method for balancing pw linear protection forwarding loads of vpls.
Background
At present, the network construction develops at a high speed, more and more services need to be supported by a high-speed network, so that the service convergence speed is very important when the network fails. When any node in the network fails, the service switching of the adjacent nodes is less than 50 milliseconds, and the end-to-end service convergence is less than 1 second, which becomes the threshold level index of the bearer network.
At present, both the MPLS TE FRR technology and the IGP route fast convergence technology cannot solve the problem of fast convergence of end-to-end services when a PE device node fails in a CE dual-homed PE network. The primary and standby pw protection technology of the VPLS is dedicated to solve the problem of end-to-end service convergence of the most common network model, and the convergence time of the end-to-end service under the condition of PE node failure is controlled within 50 milliseconds.
The VPLS protection function is mainly to ensure that VPN flow is quickly switched to a standby link when the main link fails by establishing the main link and the standby link, and ensure the reliability of VPN communication.
The working process is shown in figure 1:
establishing pw linear protection service of VPLS on PE1 and PE 2;
when a fault occurs on a main link pw between PE1-PE2 nodes, service traffic can be rapidly switched to a standby link pw for forwarding;
when the fault on the main link pw is recovered, after the main link pw is up again, the VPLS performs switchback, and switches back the service flow to the main link pw again for forwarding.
However, when the main and standby lines are UP, the traffic forwarding is concentrated on the main link, and the standby link basically is in an idle state except for forwarding a small amount of aps messages and detection protocol messages, so that the devices on the path of the main link pw operate continuously under a high load, and all the devices on the path of the standby link pw are in a low load state.
Disclosure of Invention
The invention aims to provide a pw linear protection forwarding load balancing method for vpls, which can avoid the problem of unbalanced use of device resources on a pw path of a main/standby link of a pw protection group.
In order to realize the purpose, the technical scheme adopted by the invention is as follows: a method for balancing the pw linear protection forwarding load of vpls comprises the following steps:
s100, establishing a linear protection networking environment of vpls;
s200, starting a load balancing function on a pair of pw linear protection groups;
s300, when the main link pw and the standby link pw are not failed, starting a load balancing function, so that the flow is finally forwarded in a load balancing manner on the main link pw and the standby link pw, wherein half of the flow goes through the main link pw and half of the flow goes through the standby link pw;
s400, when the main link pw breaks down, stopping load balance calculation, and completely switching the messages on the main link pw to the standby link pw for forwarding;
s500, when the standby link pw has a fault, stopping the load balancing calculation, and switching all the messages on the standby link pw back to the main link pw for forwarding.
Further, the pair of pw linearities in step S200 needs to check to determine that the peer tail nodes of the primary link pw and the backup link pw in the vpls instance are the same device.
Still further, in step S300, a command is issued to start a load balancing function on the pw protection group, when neither the main link pw nor the backup link pw fails, the aps state is NO _ REQUEST _ NULL, the traffic is finally forwarded in a load balancing manner on the main link pw and the backup link pw, half of the traffic goes through the main link pw, and half of the traffic goes through the backup link pw.
Specifically, the pw protection group performs load balancing calculation according to the destination mac address of the message received by the ac end or other header information of the message.
Further, the step S400 specifically includes: when the main link pw FAILs, aps is in a SIGNAL _ FAIL _ W state, and all the traffic on the main link is switched to the standby link pw for forwarding; after the failure of the main link pw is recovered, the aps state is NO _ REQUEST _ NULL, and according to the calculation rule, the flow on the standby link pw is switched back to half to the main link pw for forwarding.
Still further, the step S500 specifically includes: when the standby link pw FAILs and aps is in a SIGNAL _ FAIL _ P state, all traffic on the standby link is switched back to the main link pw for forwarding; after the fault of the standby link pw is recovered, when the aps state is NO _ REQUEST _ NULL, the traffic on the main link pw is switched by half to the standby link pw for forwarding according to the calculation rule.
Has the advantages that:
compared with the prior art, the method can avoid the problem of unbalanced use of the device resources on the pw paths of the main and standby links of the pw protection group, and has the following specific beneficial effects:
1. when the main link and the standby link pw are both up, according to the invention principle, the flow is transmitted on the main link and the standby link pw in a load balancing manner, so that the utilization rate of the devices on the main link and the standby link pw is ensured to be basically equal;
2. when the main link pw or the standby link pw fails, the reliability of service communication can still be ensured normally.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a usage scenario of an existing VPLS protection function;
FIG. 2 is a diagram of the method steps of the present invention;
FIG. 3 shows an example of the specific configuration of the present invention at two ends pe;
fig. 4 is a specific embodiment of a pw linear protection traffic forwarding load balancing procedure of vpls in the present invention.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
Further description is made with reference to fig. 2, 3, and 4: a method for balancing the pw linear protection forwarding load of vpls comprises the following steps:
s100, establishing a linear protection networking environment of vpls;
s200, a load balancing function is started on a pair of pw linear protection groups, and the pair of pw linear protection groups need to check and determine that the peer tail nodes of a main link pw and a standby link pw in a vpls instance are the same device;
s300, when the main link pw and the standby link pw are not failed, starting a load balancing function, so that the flow is finally forwarded in a load balancing manner on the main link pw and the standby link pw, wherein half of the flow goes through the main link pw and half of the flow goes through the standby link pw; commanding to start a load balancing function on a pw protection group, when neither a main link pw nor a standby link pw fails, enabling aps to be in a NO _ REQUEST _ NULL state, and the pw protection group performing load balancing calculation according to a target mac address of a message received by an ac end or other header information of the message, so that traffic is finally transmitted in a load balancing manner on the main link pw and the standby link pw, and half of the traffic goes through the main link pw and half of the traffic goes through the standby link; the specific configuration method is as follows:
vpls configured in the redundancy-manager mode:
load-balance enable// configuring and starting a load balancing function under a protection management mode under a vpls instance; after the function is started, the load balance calculation is performed according to the destination mac address by default.
load-balance disable// configure the load balancing function off in protection management mode under the vpls instance.
load-balance mode per-destination// configuring and calculating according to the target mac address under the protection management mode under the vpls instance.
Specific configuration examples, only configuration on both ends pe is required,
configuration of PE1 end:
vpls zte
access-point gei-0/8
access-params ethernet
$
$
pseudo-wire pw1
neighbour 2.2.2.2 vcid 1 cw-preferred
encapsulation tagged
$
redundancy-manager
protect-type 1:1 bidirectional receiving both protect-strategy aps
load-balance enable
load-balance mode per-destination
$
$
backup-pw pw2 protect pw1
neighbour 2.2.2.2 vcid 2 cw-preferred
$
$
$
configuration of PE2 end:
vpls zte
access-point gei-0/8
access-params ethernet
$
$
pseudo-wire pw1
neighbour 1.1.1.1 vcid 1 cw-preferred
encapsulation tagged
$
redundancy-manager
protect-type 1:1 bidirectional receiving both protect-strategy aps
load-balance enable
load-balance mode per-destination
$
$
backup-pw pw2 protect pw1
neighbour 1.1.1.1 vcid 2 cw-preferred
$
$
$
in the above configuration, when the load-balance enable is started, whether the protection mode is 1:1 or not must be checked, if the protection mode is not 1:1, an error is prompted when the load-balance enable is configured, and the configuration cannot be issued; after the load-balance enable is started, when a neighbor address in the backup link backup-pw pw2 is configured, whether the neighbor address is the same as the neighbor address in the main link or not needs to be checked, if the neighbor address is not the same, an error is prompted, and the configuration cannot be issued;
s400, when the main link pw breaks down, stopping load balance calculation, and completely switching the messages on the main link pw to the standby link pw for forwarding; when the main link pw FAILs, aps is in a SIGNAL _ FAIL _ W state, and all the traffic on the main link is switched to the standby link pw for forwarding; after the failure of the main link pw is recovered, the aps state is NO _ REQUEST _ NULL, and according to the calculation rule, the flow on the standby link pw is switched back to half to the main link pw for forwarding.
S500, when the backup link pw goes wrong, stopping load balancing calculation, and switching all messages on the backup link pw back to the main link pw for forwarding; when the standby link pw FAILs and aps is in a SIGNAL _ FAIL _ P state, all traffic on the standby link is switched back to the main link pw for forwarding; after the fault of the standby link pw is recovered, when the aps state is NO _ REQUEST _ NULL, the traffic on the main link pw is switched by half to the standby link pw for forwarding according to the calculation rule.
According to the technical scheme, the pw linear protection traffic forwarding load balancing method for vpls can solve the problem of unbalanced use of device resources on the pw paths of the main and standby links of the pw protection group.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (6)
1. A method for balancing the pw linear protection forwarding load of vpls is characterized in that: the method comprises the following steps:
s100, establishing a linear protection networking environment of vpls;
s200, starting a load balancing function on a pair of pw linear protection groups;
s300, when the main link pw and the standby link pw are not failed, starting a load balancing function, so that the flow is finally forwarded in a load balancing manner on the main link pw and the standby link pw, wherein half of the flow goes through the main link pw and half of the flow goes through the standby link pw;
s400, when the main link pw breaks down, stopping load balance calculation, and completely switching the messages on the main link pw to the standby link pw for forwarding;
s500, when the standby link pw has a fault, stopping the load balancing calculation, and switching all the messages on the standby link pw back to the main link pw for forwarding.
2. The method for pw linear protection forwarding load balancing of vpls according to claim 1, wherein: the pair of pw linearities in step S200 needs to check to determine that the peer tail nodes of the primary link pw and the backup link pw in the vpls instance are the same device.
3. The method for pw linear protection forwarding load balancing of vpls according to claim 2, wherein: in step S300, a command is issued to start a load balancing function on the pw protection group, when neither the primary link pw nor the backup link pw fails, the aps state is NO _ REQUEST _ NULL, and the traffic is finally forwarded in a load balancing manner on the primary link pw and the backup link pw, and half of the traffic goes through the primary link pw and half of the traffic goes through the backup link pw.
4. The method for pw linear protection forwarding load balancing of vpls in claim 3, wherein: and the pw protection group performs load balancing calculation according to the destination mac address of the message received by the ac end or other header information of the message.
5. The method for pw linear protection forwarding load balancing of vpls according to claim 4, wherein: the step S400 specifically includes: when the main link pw FAILs, aps is in a SIGNAL _ FAIL _ W state, and all the traffic on the main link is switched to the standby link pw for forwarding; after the failure of the main link pw is recovered, the aps state is NO _ REQUEST _ NULL, and according to the calculation rule, the flow on the standby link pw is switched back to half to the main link pw for forwarding.
6. The method for pw linear protection forwarding load balancing of vpls according to claim 4, wherein: the step S500 specifically includes: when the standby link pw FAILs and aps is in a SIGNAL _ FAIL _ P state, all traffic on the standby link is switched back to the main link pw for forwarding; after the fault of the standby link pw is recovered, when the aps state is NO _ REQUEST _ NULL, the traffic on the main link pw is switched by half to the standby link pw for forwarding according to the calculation rule.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315699A (en) * | 2021-05-17 | 2021-08-27 | Ut斯达康通讯有限公司 | Multi-master multi-standby fast rerouting system and method for distinguishing priority |
| CN113542051A (en) * | 2021-05-27 | 2021-10-22 | 贵州电网有限责任公司 | Monitoring flow load balancing method based on software defined network |
| CN113783791A (en) * | 2020-06-10 | 2021-12-10 | 中国移动通信集团山东有限公司 | Transmission control method, device and transmission device applicable to packet transport network |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582834A (en) * | 2008-05-16 | 2009-11-18 | 华为技术有限公司 | Updating method, equipment and system of forwarding table during service transmission of Ethernet |
| WO2014040553A1 (en) * | 2012-09-14 | 2014-03-20 | 中兴通讯股份有限公司 | Method, system and apparatus for establishing communication link |
-
2019
- 2019-12-25 CN CN201911352692.5A patent/CN111092822A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582834A (en) * | 2008-05-16 | 2009-11-18 | 华为技术有限公司 | Updating method, equipment and system of forwarding table during service transmission of Ethernet |
| WO2014040553A1 (en) * | 2012-09-14 | 2014-03-20 | 中兴通讯股份有限公司 | Method, system and apparatus for establishing communication link |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783791A (en) * | 2020-06-10 | 2021-12-10 | 中国移动通信集团山东有限公司 | Transmission control method, device and transmission device applicable to packet transport network |
| CN113315699A (en) * | 2021-05-17 | 2021-08-27 | Ut斯达康通讯有限公司 | Multi-master multi-standby fast rerouting system and method for distinguishing priority |
| CN113315699B (en) * | 2021-05-17 | 2022-05-17 | Ut斯达康通讯有限公司 | Multi-master multi-standby fast rerouting system and method for distinguishing priority |
| CN113542051A (en) * | 2021-05-27 | 2021-10-22 | 贵州电网有限责任公司 | Monitoring flow load balancing method based on software defined network |
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Application publication date: 20200501 |
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