Huawei AR1200 series Configuration Manual page 33

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
Networking Requirements
In Figure
OSPF runs between them.
GRE is enabled between Router A and Router C for the interworking between PC1 and PC2.
PC1 takes Router A as its default gateway, and PC2 takes Router C as its default gateway.
OSPF is enabled on the tunnel interface. OSPF process 1 is used for the VPN backbone network
and OSPF process 2 is used for user access.
Figure 1-6 Networking diagram of configuring a dynamic routing protocol for GRE
RouterA
10.1.1.1/24
Configuration Roadmap
The configuration roadmap is as follows:
1.
2.
3.
Data Preparation
To complete the configuration, you need the following data:
l
Issue 01 (2012-04-20)
1-6, Router A, Router B, and Router C belong to the VPN backbone network and
GE1/0/0
20.1.1.2/24
GE1/0/0
20.1.1.1/24
Tunnel0/0/1
GE2/0/0
40.1.1.1/24
10.1.1.2/24
PC1
Configure IGP on each router in the backbone network to realize the interworking between
these devices. Here OSPF process 1 is used.
Create the GRE tunnel between routers that are connected to PCs.Then routers can
communicate through the GRE runnel.
Configure the dynamic routing protocol on the network segments through which PCs access
the backbone network. Here OSPF process 2 is used.
Source address and destination address of the GRE tunnel
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RouterB
GE2/0/0
30.1.1.1/24
OSPF 1
GE1/0/0
30.1.1.2/24
Tunnel
Tunnel0/0/1
OSPF 2
40.1.1.2/24
1 GRE Configuration
RouterC
GE2/0/0
10.2.1.2/24
10.2.1.1/24
PC2
22