Huawei NetEngine80E Configuration Manual - Reliability page 181

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
traffic is forwarded to the backup device. If the backup device is capable of forwarding traffic,
service interruption time is reduced.
Context
NodeBs attached to a cell site gateway (CSG) on a mobile bearer network are connected to
aggregation devices NPE1 and NPE2 through primary and secondary pseudo wires (PWs) and
connected to network provider edges NPE3 and NPE4 configured with a Virtual Router
Redundancy Protocol for Ipv6 (VRRP6) backup group through an active link (between NPE1
and NPE3) and a standby link (between NPE2 and NPE4). If NPE1 is faulty, traffic is switched
from the active link to the standby link. Traffic is lost for a short period of time because a master/
backup VRRP6 switchover is incomplete.
Configure the backup device in this scenario to forward traffic to meet carrier-class reliability
standards. When a device configured with a VRRP6 backup group is in the backup state, it is
capable of forwarding traffic to avoid traffic loss when an aggregation device is faulty.
Figure 4-15 Schematic diagram for configuring the backup device to forward traffic
Procedure
Step 1 Run:
Issue 02 (2014-09-30)
NOTE
Configure the backup device to forward traffic on the master or backup device in a VRRP6 backup group.
CSG
CSG
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VRRP6
NPE1
Master
Active link
Standby link
NPE4
NPE2
Backup
VRRP6
NPE1
Master
Standby link
Active link
NPE2
Backup
4 VRRP Configuration
NPE3
RNC1
RNC2
NPE3
RNC1
NPE4
RNC2
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