l IP addresses of the interfaces on the two ends of the GRE tunnel
Procedure
Step 1 Assign the IP address to each interface.
<Quidway> system-view
[Quidway] sysname SwitchA
[SwitchA] vlan batch 10 20
[SwitchA] interface gigabitethernet 1/0/0
[SwitchA-GigabitEthernet1/0/0] port hybrid pvid vlan 10
[SwitchA-GigabitEthernet1/0/0] port hybrid untagged vlan 10
[SwitchA-GigabitEthernet1/0/0] quit
[SwitchA] interface gigabitethernet 2/0/0
[SwitchA-GigabitEthernet2/0/0] port hybrid pvid vlan 20
[SwitchA-GigabitEthernet2/0/0] port hybrid untagged vlan 20
[SwitchA-GigabitEthernet2/0/0] quit
[SwitchA] interface vlanif 10
[SwitchA-Vlanif10] ip address 10.1.1.2 24
[SwitchA-Vlanif10] quit
[SwitchA] interface vlanif 20
[SwitchA-Vlanif20] ip address 20.1.1.1 24
[SwitchA-Vlanif20] quit
The configurations of Switch B and Switch C are similar to the configuration of Switch A, and
are not mentioned here.
Step 2 Configure OSPF process 1 between SwitchA, SwitchB, and SwitchC.
# Configure SwitchA.
[SwitchA] ospf 1
[SwitchA-ospf-1] area 0
[SwitchA-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255
[SwitchA-ospf-1-area-0.0.0.0] quit
[SwitchA-ospf-1] quit
# Configure SwitchB.
[SwitchB] ospf 1
[SwitchB-ospf-1] area 0
[SwitchB-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255
[SwitchB-ospf-1-area-0.0.0.0] network 30.1.1.0 0.0.0.255
[SwitchB-ospf-1-area-0.0.0.0] quit
[SwitchB-ospf-1] quit
# Configure SwitchC.
[SwitchC] ospf 1
[SwitchC-ospf-1] area 0
[SwitchC-ospf-1-area-0.0.0.0] network 30.1.1.0 0.0.0.255
[SwitchC-ospf-1-area-0.0.0.0] quit
[SwitchC-ospf-1] quit
# Run the display ip routing-table command on Switch A and Switch C. You can find that they
learn the OSPF routes destined for the network segment of the peer.
Step 3 Configure the tunnel interface.
The configuration procedure is the same as that in 2.7.1 Example for Configuring Static Routes
on the GRE Tunnel.
Step 4 Configure the OSPF protocol on the tunnel interfaces.
# Configure Switch A.
[SwitchA] ospf 2
[SwitchA-ospf-2] area 0
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 2 GRE Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
81
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