CN104821913A - Data message forwarding method and apparatus - Google Patents
Data message forwarding method and apparatus Download PDFInfo
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- CN104821913A CN104821913A CN201510224099.8A CN201510224099A CN104821913A CN 104821913 A CN104821913 A CN 104821913A CN 201510224099 A CN201510224099 A CN 201510224099A CN 104821913 A CN104821913 A CN 104821913A
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Abstract
The invention provides a data message forwarding method. The method comprises: when a broadband remote access server (BRAS) serving as standby equipment receives a host route issued by a primary BRAS, a host route entry corresponding to the host route is generated; and when the BRAS is switched to be primary equipment and receives a data message, searching is carried out in the host route entry according to a destination IP address of the data message and then the data message is forwarded based on a searched outbound interface in the host route entry. On the basis of the same inventive concept, the application also brings forward a data message forwarding apparatus. When primary and standby equipment switching is carried out, the virtual service redundancy protocol (VSRP) networking convergence rate can be improved according to the technical scheme.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of data message forwarding method and device.
Background technology
At virtual service redundancy protocol (the Virtual Service Redundancy Protocol of dual-host backup, VSRP) in networking, two Broadband Remote Access Server (Broadband Remote Access Server, BRAS) by Virtual Router Redundancy Protocol (Virtual Router Redundancy Protocol between, VRRP) protocol negotiation main and standby relation, a BRAS is as main equipment, and a BRAS is as standby equipment.
As the BRAS for equipment when receiving the Host routes issued as the BRAS of main equipment, do not generate Host routes list item, namely control plane does not issue Host routes to data plane.
Carry out two-way converting detection (Bidirectional Forwarding Detection, when BFD) detecting, when detecting as link failure between the BRAS of main equipment and lower extension LSW, by VRRP agreement, active-standby switch is carried out between two BRAS, switched to the BARS of main equipment by standby equipment, the Host routes issued for former main equipment generates Host routes list item, is issued to data plane by Host routes.
In above-mentioned implementation, the BRAS as standby equipment does not issue Host routes to data plane, but issues Host routes again to data plane after standby equipment switches to main equipment by the time, like this when active-standby switch, VSRP networking convergence rate can be caused slow.
Summary of the invention
In view of this, the application provides a kind of data message forwarding method and device, to solve when active-standby switch, and the problem that VSRP networking convergence rate is slow.
For solving the problems of the technologies described above, the technical scheme of the application is achieved in that
A kind of data message forwarding method, be applied to the BRAS in VRRP backup group in VSRP network, the method comprises:
Described BRAS, as standby equipment, when receiving the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding;
When described BRAS switches to main equipment, when receiving data message, the object IP address according to described data message is searched in Host routes list item, and forwards described data message according to the outgoing interface in the Host routes list item found.
A kind of data message forwarding device, be applied on the BRAS in VSRP network in VRRP backup group, this device comprises: receiving element, generation unit and processing unit
Described receiving element, for this unit place BRAS as standby equipment, receives the Host routes that main BRAS issues; This unit place BRAS switches to main equipment, receives data message;
Described generation unit, for this unit place BRAS as standby equipment, when described receiving element receives the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding;
Described processing unit, for when described receiving element receives data message, search according in Host routes list item in described generation unit of the object IP address of described data message, and forward described data message according to the outgoing interface in the Host routes list item found.
From technical scheme above, as the BRAS of standby equipment in the application, when receiving the Host routes that main BRAS issues, generate corresponding Host routes list item, when this BRAS switches to main equipment, the Host routes list item according to correspondence forwards the data message received.When active-standby switch, the program can improve VSRP networking convergence rate.
Accompanying drawing explanation
Fig. 1 is data message forwarding schematic flow sheet in the embodiment of the present application;
Fig. 2 is VSRP networking schematic diagram in the embodiment of the present application;
Fig. 3 is the apparatus structure schematic diagram being applied to above-mentioned technology in the embodiment of the present application.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
A kind of data message forwarding method is provided in the embodiment of the present application, be applied to the BRAS in VRRP backup group in VSRP network, when this BRAS is as standby equipment, when receiving the Host routes of main BRAS issue, generate corresponding Host routes list item, when this BRAS switches to main equipment, the Host routes list item according to correspondence forwards the data message received.When active-standby switch, the program can improve VSRP networking convergence rate.
For convenience, in a VRRP backup group, the BRAS as main equipment is called main BRAS, and the BRAS as standby equipment is called standby BRAS.
The network segment route that in VRRP backup group, certification on this BRAS can be passed through by main BRAS is distributed to standby BRAS, and upper for this BRAS Host routes obtained can be distributed to standby BRAS.
When standby BRAS receives the network segment route that main BRAS issues, core router is pointed in outlet, is about to export the interface being designated this BRAS and being connected with core router.
When existing realization, when standby BRAS receives the Host routes that main BRAS issues, described Host routes is not issued to data plane, does not namely generate Host routes list item; And the embodiment of the present application is when realizing, when receiving the Host routes that main BRAS issues, described Host routes is issued to data plane by standby BRAS, namely generates Host routes list item.
In the application's specific embodiment at standby BRAS before switching to main BRAS, generate Host routes list item, when switching to main BRAS, greatly saving convergence time, namely improve VSRP networking convergence rate.
Be data message forwarding schematic flow sheet in the embodiment of the present application see Fig. 1, Fig. 1.Concrete steps are:
Step 101, BRAS, as standby equipment, when receiving the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding.
Step 102, this BRAS switches to main equipment, and when receiving data message, the object IP address according to described data message is searched in Host routes list item, and forwards described data message according to the outgoing interface in the Host routes list item found.
In order to avoid on standby BARS owing to generating Host routes list item in advance, data message by hanging interface direct that LSW is connected to switch through with lower, and causes main BARS can not obtain associated statistical information, has also carried out following process in the embodiment of the present application:
Standby BRAS increases ACL match information in the Host routes list item generated;
Meanwhile, BRAS is for VRRP backup group configuration acl rule, and described acl rule is: ACL match information, is forwarded by the interface that the data message of the described ACL match information of coupling is connected with nucleus equipment by this BRAS.
ACL match information in the Host routes list item that described VRRP backup group is corresponding, identical with the ACL match information in the acl rule configured for described VRRP backup group, and can be the VRRP backup group number of described VRRP backup group.
For same VRRP backup group, the ACL match information increased in the Host routes list item that this VRRP backup group is corresponding is identical with the ACL configuration information in the acl rule configured for this VRRP backup group.For different VRRP backup group, the ACL match information increased in the Host routes list item that VRRP backup group is corresponding is different from the ACL configuration information in the acl rule configured for another VRRP backup group.
When specific implementation, ACL match information is not limited to VRRP and backs up group number, if only there is a VRRP backup group in current VSRP networking, then ACL match information can use any mark to realize; When there is two or more VRRP backup group in current VSRP networking, any mark can distinguishing different VRRP backup group can be used to realize.
When standby BRAS receives data message, object IP address according to described data message is searched in Host routes list item, if there is ACL match information in the Host routes list item found, then corresponding according to described ACL match information acl rule processing said data message.
When in the embodiment of the present application, standby BRAS switches to main equipment, current main BARS deletes acl rule corresponding to place VRRP backup group; And the ACL match information in the Host routes list item of correspondence.
Below in conjunction with accompanying drawing, describe the forwarding how realizing data message in the embodiment of the present application in detail.
Be VSRP networking schematic diagram in the embodiment of the present application see Fig. 2, Fig. 2.
In Fig. 2, wish that BRAS 1 is the main equipment of the 11.11.11.0/24 network segment, and BRAS 2 is the standby equipment of the 11.11.11.0/24 network segment; 12.12.12.0/24 the network segment only accesses on BRAS 2, and the access of this network segment does not have active and standby dividing.
Gone out the main and standby relation in BRAS equipment between two BRAS by VRRP protocol negotiation, BRAS1 is main equipment, and BRAS 2 is standby equipment.
11.11.11.0/24 the user of the network segment is by certification on BRAS 1, BRAS 1 generates Host routes, and the user of the 12.12.12.0/24 network segment passes through certification on BRAS 2.
BRAS 1 is distributed to BRAS 2 by VSRP agreement the network segment route of the 11.11.11.0/24 network segment.
When BRAS 2 receives the network segment route of BRAS 1 issue, the outgoing interface of described network segment route 11.11.11.0/24 is pointed to nucleus equipment, and namely outgoing interface is interface 2.
When certain time, BRAS1 obtains Host routes, as 11.11.11.1/24, then this Host routes 11.11.11.1/24 is distributed to BRAS 2.
Arrive this, above-mentioned realization is with existing realization.
When BARS 2 receives the Host routes of BARS 1 issue, generate Host routes list item for this Host routes, and increase ACL match information in this Host routes list item.
See table 1, table 1 is the content that in the embodiment of the present application, Host routes list item comprises.
| Host routes | Outgoing interface | ACL match information |
| 11.11.11.1/24 | Interface 2 | VRRP backup group 1 |
Table 1
ACL match information in table 1 uses VRRP to back up group number and realizes, if there is multiple VRRP backup group in VSRP networking, uses corresponding backup group number to be identified as the acl rule of corresponding VRRP backup group configuration.
Simultaneously for this VRRP backup group (VRRP backup group 1) configuration acl rule, the ACL match information of the acl rule of configuration is VRRP backup group 1, and the action of execution is, the data message mating this acl rule is forwarded by interface 1.Issue acl rule, be redirected down hop, data message is forwarded by interface 1.The object issuing acl rule is replacement twice route, because twice route can cause forwarding performance to reduce.
Current BRAS 2 receives object IP address when being the data message of 11.11.11.1/24, in Host routes list item, corresponding Host routes list item is found according to object IP address 11.11.11.1/24, content shown in table 1, and mate in the acl rule configured in this locality according to the ACL match information in table 1, after matching acl rule, according to the acl rule matched, the data message received is sent by interface 1.
When the link failure between LSW 1 and BRAS 1 being detected, notice VSRP switches; BRAS 2 switches to master status VSRP group corresponding for the 11.11.11.0/24 network segment, BARS 2 is pointed in the outlet of network segment route 11.11.11.0/24 and starts statistics and charging process, and delete the acl rule configured for VRRP backup group 1, the customer flow of the access 11.11.11.0/24 network segment directly can be forwarded to LSW 2 by BRAS 2.
BARS 2, can by Host routes list item when deleting corresponding A CL rule, to should the match information of acl rule delete, also can not delete.
After BRAS 2 switches to main equipment, when supposing that receiving object IP address is the data message of 11.11.11.1/24, in Host routes list item, find corresponding Host routes list item according to object IP address 11.11.11.1/24, and use the outgoing interface (interface 2) in the Host routes list item found to forward the data message received.
BRAS 2, no matter as main equipment, or during standby equipment, when to receive object IP address be the data message of 121212.1/24, do not affect the process to this data message, and processing procedure is with existing realization, is not described in detail here.
From above-mentioned realization, on standby VSRP, Host routes list item is generated in advance in the application's specific embodiment, when standby VSRP switches to main VSRP, the Host routes list item that direct use generates in advance carries out the forwarding of data message, improves the convergence rate of VSRP networking; And before standby VSRP switches to main VSRP, by acl rule, be redirected route next jump, corresponding data message be forwarded on main VSRP by core router, to carry out the traffic statistics such as charging.
Based on same inventive concept, the application also proposes a kind of data message forwarding device, is applied on the BRAS in VSRP network in VRRP backup group.It is the apparatus structure schematic diagram being applied to above-mentioned technology in the embodiment of the present application see Fig. 3, Fig. 3.This device comprises: receiving element 301, generation unit 302 and processing unit 303;
Receiving element 301, for this unit place BRAS as standby equipment, receives the Host routes that main BRAS issues; This unit place BRAS switches to main equipment, receives data message;
Generation unit 302, for this unit place BRAS as standby equipment, when receiving element 301 receives the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding;
Processing unit 303, for when receiving element 301 receives data message, search according in Host routes list item in generation unit 302 of the object IP address of described data message, and forward described data message according to the outgoing interface in the Host routes list item found.
Preferably,
Generation unit 302, for this unit place BRAS as standby equipment, increases ACL match information in described Host routes list item; And for described VRRP backup group configuration acl rule, described acl rule is: ACL match information, is forwarded by the interface that the data message of this acl rule of coupling is connected with nucleus equipment by this BRAS;
Receiving element 301, for this unit place BRAS as standby equipment, receives data message;
Processing unit 303, for this unit place BRAS as standby equipment, when receiving element 301 receives data message, object IP address according to described data message is searched in Host routes list item, if there is ACL match information in the Host routes list item found, then corresponding according to described ACL match information acl rule processing said data message.
Preferably,
Generation unit 302, is further used for this unit place BRAS and switches to main equipment, deletes the acl rule for described VSRP backup group configuration.
Preferably,
Generation unit 302, when being further used for deleting the acl rule for described VSRP backup group configuration, deletes the ACL match information in Host routes list item corresponding to described VRRP backup group.
Preferably,
ACL match information in the Host routes list item that described VRRP backup group is corresponding, identical with the ACL match information in the acl rule configured for described VRRP backup group, and be the VRRP backup group number of described VRRP backup group.
The unit of above-described embodiment can be integrated in one, and also can be separated deployment; A unit can be merged into, also can split into multiple subelement further.
In sum, the application by generating Host routes list item in advance on standby VSRP, and when standby VSRP switches to main VSRP, the Host routes list item that direct use generates in advance carries out the forwarding of data message, improves the convergence rate of VSRP networking; And before standby VSRP switches to main VSRP, by acl rule, be redirected route next jump, corresponding data message be forwarded on main VSRP by core router, to carry out the traffic statistics such as charging.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. a data message forwarding method, be applied on the Broadband Remote Access Server BRAS in virtual service redundancy protocol VSRP network in virtual router redundancy protocol backup group, it is characterized in that, the method comprises:
Described BRAS, as standby equipment, when receiving the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding;
When described BRAS switches to main equipment, when receiving data message, the object Internet protocol IP address according to described data message is searched in Host routes list item, and forwards described data message according to the outgoing interface in the Host routes list item found.
2. method according to claim 1, is characterized in that, described method comprises further:
Described BRAS, as standby equipment, increases access control list ACL match information in described Host routes list item;
And for described VRRP backup group configuration acl rule, the match information of described acl rule is ACL match information, perform an action as the interface be connected with nucleus equipment by this BRAS by the data message of this acl rule of coupling is forwarded;
When receiving data message, the object IP address according to described data message is searched in Host routes list item, if there is ACL match information in the Host routes list item found, then and corresponding according to described ACL match information acl rule processing said data message.
3. method according to claim 2, is characterized in that, described BRAS switches to main equipment, and described method comprises further:
Delete the acl rule for described VSRP backup group configuration.
4. method according to claim 3, is characterized in that, during the acl rule that described deletion configures for described VSRP backup group, described method comprises further:
Delete the ACL match information in Host routes list item corresponding to described VRRP backup group.
5. the method according to claim 1-4 any one, is characterized in that,
ACL match information in the Host routes list item that described VRRP backup group is corresponding, identical with the ACL match information in the acl rule configured for described VRRP backup group, and be the VRRP backup group number of described VRRP backup group.
6. a data message forwarding device, be applied on the Broadband Remote Access Server BRAS in virtual redundancy service protocol VSRP network in virtual router redundancy protocol backup group, it is characterized in that, this device comprises: receiving element, generation unit and processing unit
Described receiving element, for this unit place BRAS as standby equipment, receives the Host routes that main BRAS issues; This unit place BRAS switches to main equipment, receives data message;
Described generation unit, for this unit place BRAS as standby equipment, when described receiving element receives the Host routes of main BRAS issue, generates the Host routes list item that described Host routes is corresponding;
Described processing unit, for when described receiving element receives data message, search according in Host routes list item in described generation unit of the object Internet protocol IP address of described data message, and forward described data message according to the outgoing interface in the Host routes list item found.
7. device according to claim 6, is characterized in that,
Described generation unit, for this unit place BRAS as standby equipment, increases access control list ACL match information in described Host routes list item; And for described VRRP backup group configuration acl rule, the match information of described acl rule is ACL match information, perform an action as the interface be connected with nucleus equipment by this BRAS by the data message of this acl rule of coupling is forwarded;
Described receiving element, for this unit place BRAS as standby equipment, receives data message;
Described processing unit, for this unit place BRAS as standby equipment, when described receiving element receives data message, object IP address according to described data message is searched in Host routes list item, if there is ACL match information in the Host routes list item found, then corresponding according to described ACL match information acl rule processing said data message.
8. device according to claim 7, is characterized in that,
Described generation unit, is further used for this unit place BRAS and switches to main equipment, deletes the acl rule for described VSRP backup group configuration.
9. device according to claim 8, is characterized in that,
Described generation unit, when being further used for deleting the acl rule for described VSRP backup group configuration, deletes the ACL match information in Host routes list item corresponding to described VRRP backup group.
10. the device according to claim 6-9 any one, is characterized in that,
ACL match information in the Host routes list item that described VRRP backup group is corresponding, identical with the ACL match information in the acl rule configured for described VRRP backup group, and be the VRRP backup group number of described VRRP backup group.
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| CN107786497A (en) * | 2016-08-25 | 2018-03-09 | 华为技术有限公司 | The method and apparatus for generating ACL table |
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| CN108270690A (en) * | 2016-12-30 | 2018-07-10 | 北京华为数字技术有限公司 | The method and apparatus for controlling message flow |
| CN108880917A (en) * | 2018-08-23 | 2018-11-23 | 华为技术有限公司 | Switching method, device and turn control separation system of control plane equipment |
| CN109150566A (en) * | 2017-06-19 | 2019-01-04 | 中兴通讯股份有限公司 | A kind of service path restoring method and device |
| CN109921933A (en) * | 2019-03-11 | 2019-06-21 | 北京天融信网络安全技术有限公司 | A kind of information processing method and Network Security Device |
| CN110191009A (en) * | 2019-07-16 | 2019-08-30 | 北京天融信网络安全技术有限公司 | A kind of processing method and system of message |
| CN112653596A (en) * | 2020-12-16 | 2021-04-13 | 杭州迪普科技股份有限公司 | Method and device for routing information issuing and gateway equipment switching |
| CN114157436A (en) * | 2020-08-17 | 2022-03-08 | 迈普通信技术股份有限公司 | Message filtering method and device, network equipment and computer readable storage medium |
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| WO2017054535A1 (en) * | 2015-09-28 | 2017-04-06 | 中兴通讯股份有限公司 | Traffic forwarding method and apparatus |
| US11032198B2 (en) | 2016-08-25 | 2021-06-08 | Huawei Technologies Co., Ltd. | Method and apparatus for generating ACL table |
| CN107786497A (en) * | 2016-08-25 | 2018-03-09 | 华为技术有限公司 | The method and apparatus for generating ACL table |
| CN107786497B (en) * | 2016-08-25 | 2020-04-14 | 华为技术有限公司 | Method and device for generating ACL table |
| WO2018113633A1 (en) * | 2016-12-21 | 2018-06-28 | 中兴通讯股份有限公司 | Packet forwarding method, packet forwarding controller, bras, and computer storage medium |
| CN108270690A (en) * | 2016-12-30 | 2018-07-10 | 北京华为数字技术有限公司 | The method and apparatus for controlling message flow |
| CN109150566A (en) * | 2017-06-19 | 2019-01-04 | 中兴通讯股份有限公司 | A kind of service path restoring method and device |
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| CN109921933B (en) * | 2019-03-11 | 2022-07-12 | 北京天融信网络安全技术有限公司 | Information processing method and network security equipment |
| CN110191009A (en) * | 2019-07-16 | 2019-08-30 | 北京天融信网络安全技术有限公司 | A kind of processing method and system of message |
| CN114157436A (en) * | 2020-08-17 | 2022-03-08 | 迈普通信技术股份有限公司 | Message filtering method and device, network equipment and computer readable storage medium |
| CN112653596A (en) * | 2020-12-16 | 2021-04-13 | 杭州迪普科技股份有限公司 | Method and device for routing information issuing and gateway equipment switching |
| CN112653596B (en) * | 2020-12-16 | 2022-07-01 | 杭州迪普科技股份有限公司 | Method and device for routing information issuing and gateway equipment switching |
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