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11.10.3 Example for Configuring RUI Backup with Automatic Route
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This section provides an example for configuring RUI backup with automatic route
advertisement. The example provides the networking requirements, configuration roadmap,
configuration procedure, and configuration files.
Networking Requirements
On the network shown in
, users log in to Router A and Router B through a LAN
switch. The two Routers run VRRP to determine the master and backup status. Both Routers are
configured to allow users to get online.
Automatic route advertisement is easier to configure than manual route advertisement.
Automatic route advertisement prevents the problem that if a fault in a BRAS occurs after a
master/slave BRAS switchover is implemented, UNRs cannot be automatically advertised after
the BRAS recovers. The default route cost can be used to control route preference. If dual-system
hot backup is configured on BRASs, a routing protocol imports UNRs and trusts UNR preference
values. This allows the network segment route of the primary address pool to have higher route
precedence than that of the secondary address pool.
To improve link usage, allow a VRRP backup group to transmit user packets with odd MAC
addresses and another VRRP backup group to transmit user packets with even MAC addresses
to load-balance user packets between Router A and Router B.
Figure 11-7
RUI backup with automatic route advertisement
Metro
Network
Router A
Router B
Router C
IP/ MPLS
10.0.1.2/24
GE 1/0/0
GE 1/0/0
GE 2/0/0
GE 2/0/0
GE 3/0/0
GE 3/0/0
10.0.1.1/24
Device Name
Interface
IP Address
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
11 Multi-node Backup Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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