![Huawei Quidway NetEngine40E Configuration Manual - Reliability Download Page 1306](http://html.mh-extra.com/html/huawei/quidway-netengine40e/quidway-netengine40e_configuration-manual-reliability_1694531306.webp)
Figure 11-16
L2TP two-node hot backup
LAC2
LNS
LAC1
VRRP+BFD
Internet
Loopback
Loopback
User
Network
L2TP Tunnel
L2TP Tunnel
GE1/0/0
GE1/0/0
GE2/0/0
GE2/0/0
Backup
channel
Protection
tunnel
Device Name Interface Name IP Address
LAC1
GE1/0/0.2
10.0.1.1/24 (IP address of the interface running VRRP)
GE2/0/0
10.0.2.1/24
Loopback1
7.7.7.7/32 (source IP address for LAC1 to establish a tunnel)
Loopback2
8.8.8.8/32 (source IP address for LAC2 to establish a tunnel)
Loopback3
10.0.0.1/32 (IP address of the data backup channel between LACs)
LAC2
GE1/0/0.2
10.0.1.2/24 (IP address of the interface running VRRP)
GE2/0/0
10.0.3.1/24
Loopback1
7.7.7.7/32 (source IP address for LAC1 to establish a tunnel)
Loopback2
8.8.8.8/32 (source IP address for LAC2 to establish a tunnel)
Loopback3
10.0.0.2/32 (IP address of the data backup channel between LACs)
Configuration Roadmap
The configuration roadmap is as follows:
1.
Configure routes to ensure IP connectivity between devices, then configure the route policy
on LAC1 and LAC2. For details, see
HUAWEI NetEngine80E/40E Router Configuration
Guide - IP Routing
.
2.
Configure basic user access functions and ensure that the two LACs have the same
configuration. For details, see
HUAWEI NetEngine80E/40E Router Configuration Guide
- User Access
.
3.
Each of LACs sets up an L2TP tunnel with the LNS.
4.
Establish a multi-node backup platform. Configure an RBS on the network side of the
master and backup routers (LAC1 and LAC2). LAC1 is the master and LAC2 is the backup.
5.
Configure a VRRP backup group on the access side of two routers (LAC1 and LAC2) to
determine the master and backup status. Create a BFD session, and configure the VRRP
backup group to track the BFD session.
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.
1289