Reliability processing methods and systems in the networking of metro ethernet network providing multi-service

Abstract

A reliability processing method in networking of Metro Ethernet Network providing multi-service includes: establishing a Virtual Router Redundancy Protocol (VRRP) group with at least two service control gateways, establishing network connections between an access device (UPE) and the service control gateways in the Virtual Router Redundancy Protocol group by a Virtual Private LAN Service (VPLS); performing Layer 2 service and Layer 3 service processing, after active and standby service control gateways in the Virtual Router Redundancy Protocol group are determined according to a processing result of a Virtual Router Redundancy Protocol message. Therefore, the reliability of the Layer 2 and Layer 3 services of the MAN may be sufficiently guaranteed, and the overhead of the system may be reduced significantly.

1 . A reliability processing method in networking of a Metro Ethernet Network providing multi-service, wherein a Virtual Router Redundancy Protocol (VRRP) group is established with at least two service control gateways, and network connections are established between an access device (UPE) and the service control gateways in the VRRP group by a Virtual Private LAN Service (VPLS), respectively;
 the method comprising:   performing Layer  2  service and Layer  3  service processing after an active and a standby service control gateway in the VRRP group are determined according to a processing result of a VRRP message;   wherein, the access device establishes two VPLS Pseudo-Wires (PWs) for each accessed service, one is to the active service control gateway, the other to the standby service control gateway; the active service control gateway sets its service PWs to an active state, and the standby service control gateway sets its service PWs to a standby state; and the PW in the standby state sends and receives no service message except the VRRP message.   
     
     
         2 . The method of  claim 1 , further comprising:
 for the Layer  2  service, after the active service control gateway and the standby service control gateway are interchanged according to a processing result of a VRRP message,   sending, by the altered active service control gateway, a media access control (MAC) address withdraw message to the access device by a Virtual Private LAN Service control protocol;   broadcasting, by the access device, a message to the service control gateways in the VRRP group by a Virtual Private LAN Services pseudo-wire;   responding, by the new active service control gateway, a message to the access device; and   performing, by the access device, Layer  2  service processing with the new active service control gateway according to the response message.   
     
     
         3 . The method of  claim 1 , further comprising:
 after the active service control gateway and standby service control gateway are interchanged according to a processing result of a VRRP message,   notifying, by the new active service control gateway, the access device of the address of the new active service control gateway; and   performing, by the access device, Layer  2  and Layer  3  service processing with the new active service control gateway according to the notification.   
     
     
         4 . The method of  claim 3 , wherein the new service control gateway notifies the access device by a gratuitous Address Resolution Protocol message via a service pseudo-wire, and the access device performs Layer  2  and Layer  3  service processing with the new service control gateway according to the gratuitous Address Resolution Protocol message. 
     
     
         5 . The method of  claim 1 , wherein the VRRP message is transmitted via a pseudo-wire. 
     
     
         6 . A reliability processing system in networking of a Metro Ethernet Network providing multi-service, comprising an access device (UPE), at least two service control gateways, and a service switching module, wherein:
 the at least two service control gateways form a Virtual Router Redundancy Protocol (VRRP) group, the access device establishes network connections with the service control gateways in the VRRP group by a Virtual Private LAN Service (VPLS), respectively;   the service switching module is configured to perform Layer  2  service and Layer  3  service processing after active and standby service control gateways in the VRRP group are determined according to a processing result of a VRRP message;   wherein, the access device establishes two VPLS Pseudo-Wires (PWs) for each accessed service, one is to the active service control gateway, the other to the standby service control gateway; the active service control gateway sets its service PWs to an active state, and the standby service control gateway sets its service PWs to a standby state; and the PW in the standby state sends and receives no service message except the VRRP message.   
     
     
         7 . The system of  claim 6 , wherein after the active and standby service control gateway are interchanged according to a processing result of a VRRP message, the service switching module is further configured to switch to the Layer  2  and Layer  3  service connections between the access device and the new active service control gateway to perform Layer  2  and Layer  3  service processing according to a notification from the new active service control gateway. 
     
     
         8 . A reliability processing method implemented in a Metro Ethernet Network providing for multiple services, the method comprising:
 establishing a Virtual Router Redundancy Protocol (VRRP) group with at least two service control gateways;   establishing, by a Virtual Private LAN service (VPLS), network connections between an access device and the service control gateways;   determining an active service control gateway and a standby service control gateway in the VRRP group according to a processing result of a VRRP message;   performing Layer  2  service and Layer  3  service processing between the active service control gateway and the access device;   establishing, by the access device, a first VPLS Pseudo-Wire (PW) and a second VPLS Pseudo-Wire (PW) for each accessed service, wherein the first VPLS PW is connected to the active service control gateway and the second VPLS PW is connected to the standby service control gateway;   setting, by the active service control gateway, the first VPLS PW to an active state; and   setting, by the standby service control gateway, the second VPLS PW to a standby state, wherein the second VPLS PW sends and receives the VRRP message;   for the Layer  2  service, after the active service control gateway and the standby service control gateway are interchanged according to a processing result of a VRRP message,   sending, by the altered active service control gateway, a media access control (MAC) address withdraw message to the access device by the second Virtual Private LAN Service control protocol;   relearning, by the access device, a MAC address;   directing, by the access device, the gateway of the Layer 2  service to the altered active service control gateway.   
     
     
         9 . The method of  claim 8 , further comprising:
 after the active service control gateway and standby service control gateway are interchanged according to a processing result of a VRRP message,   notifying, by the new active service control gateway, the access device of the address of the new active service control gateway; and   performing, by the access device, Layer  2  and Layer  3  service processing with the new active service control gateway according to the notification.   
     
     
         10 . The method of  claim 9 , wherein the new service control gateway notifies the access device by a gratuitous Address Resolution Protocol message via a service pseudo-wire, and the access device performs Layer  2  and Layer  3  service processing with the new service control gateway according to the gratuitous Address Resolution Protocol message. 
     
     
         11 . The method of  claim 8 , wherein the VRRP message is transmitted via a pseudo-wire. 
     
     
         12 . A reliability processing system in a Metro Ethernet Network providing multiple services, comprising:
 an access device;   at least two service control gateways; and   a service switching module, wherein:   the at least two service control gateways form a Virtual Router Redundancy Protocol (VRRP) group;   the access device establishes network connections with the service control gateways in the VRRP group by a Virtual Private LAN Service (VPLS);   an active service control gateway and a standby service control gateway in the VRRP group are determined according to a processing result of a VRRP message;   the service switching module is configured to perform Layer  2  service and Layer  3  service processing;   the access device establishes a first VPLS Pseudo-Wire (PW) and a second VPLS Pseudo-Wire (PW) for each accessed service;   the first VPLS PW is connected to the active service control gateway;   the second VPLS PW is connected to the standby service control gateway;   the active service control gateway sets the first VPLS PW to an active state;   the standby service control gateway sets the second VPLS PW to a standby state; and   the second VPLS PW in the standby state sends and receives the VRRP message;   wherein   for the Layer  2  service, after the active service control gateway and the standby service control gateway are interchanged according to a processing result of a VRRP message:   the altered active service control gateway sends a media access control (MAC) address withdraw message to the access device by the second Virtual Private LAN Service control protocol;   the access device relearns a MAC address and direct the gateway of the Layer 2  service to the altered active service control gateway.   
     
     
         13 . The system of  claim 12 , wherein the service switching module is configured, for the Layer  3  service, to establish the Layer  3  service connection between the access device and the active service control gateway according to a gateway address notified to the access device by the active service control gateway, and is configured, for the Layer  2  service, to establish the Layer  2  service connection between the access device and the active service control gateway according to a gateway address obtained from a response message of the active service control gateway after the access device broadcasts a message;
 or, the service switching module is configured to establish the Layer  2  and Layer  3  service connections between the access device and the active service control gateway according to a notification of the active service control gateway. 
 
     
     
         14 . The system of  claim 12 , wherein the service switching module is further configured to establish Layer  2  and Layer  3  service connections between the access device and the standby service control gateway. 
     
     
         15 . The system of  claim 14 , wherein after the active and standby service control gateway are interchanged according to a processing result of a VRRP message, the service switching module is further configured to switch to the Layer  2  and Layer  3  service connections between the access device and the new active service control gateway to perform Layer  2  and Layer  3  service processing according to a notification from the new active service control gateway.