Huawei AR1200 series Configuration Manual page 37

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
3.
Data Preparation
To complete the configuration, you need the following data:
l
l
l
l
l
Procedure
Step 1 Configure the routing protocol.
Configure a routing protocol on Router A, Router B, and Router C to implement the interworking
between these devices. OSPF is configured in this example. The configuration details are not
mentioned here.
After the configuration,
l Router A and Router C are routable.
l Router A can successfully ping GE1/0/0 of Router C.
l Router C can successfully ping GE1/0/0 of Router A.
Step 2 Configure the interfaces of the GRE tunnel.
# Configure Router A.
[RouterA] interface tunnel0/0/1
[RouterA-Tunnel0/0/1] ip address 40.1.1.1 255.255.255.0
[RouterA-Tunnel0/0/1] tunnel-protocol gre
[RouterA-Tunnel0/0/1] source 20.1.1.1
[RouterA-Tunnel0/0/1] destination 30.1.1.2
[RouterA-Tunnel0/0/1] quit
# Configure Router C.
[RouterC] interface tunnel0/0/1
[RouterC-Tunnel0/0/1] ip address 40.1.1.2 255.255.255.0
[RouterC-Tunnel0/0/1] tunnel-protocol gre
[RouterC-Tunnel0/0/1] source 30.1.1.2
[RouterC-Tunnel0/0/1] destination 20.1.1.1
[RouterC-Tunnel0/0/1] quit
After the configuration,
l The GRE tunnel between Router A and Router C is set up.
l The status of the tunnel interfaces is Up.
Step 3 Enable multicast.
# Enable the multicast routing protocol globally. Enable PIM DM on the tunnel interfaces, and
enable PIM DM and IGMP on the interfaces connected to the PCs.
# Configure Router A.
[RouterA] multicast routing-enable
Issue 01 (2012-04-20)
Create an IPSec tunnel between Router A and Router C to encrypt the GRE encapsulated
multicast packets.
Data for configuring the routing protocol for the backbone network
Source address and destination address of the GRE tunnel
IP addresses of the interfaces on both ends of the GRE tunnel
Parameters for configuring IKE such as pre-shared-key and remote-name
Data for configuring IPSec such as IPSec proposal name and ACL
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1 GRE Configuration
26