Huawei Quidway S9300

3.14.7 Example for Configuring the OSPF Sham Link
Networking Requirements
As shown in Figure 3-9, CE1 and CE2 belong to the same OSPF area of vpn1 and are connected
to PE1 and PE2 respectively. Assume that the cost of each link is 1.
A CE and a PE communicate through OSPF. VPN traffic is forwarded between CE1 and CE2
over the MPLS backbone, not through the OSPF intra-area routes.
Figure 3-9 Networking diagram for configuring the OSPF sham link
CE2
PE1
PE2
CE1
sham link
GE2/0/0
GE2/0/0
GE1/0/0
GE2/0/0 GE2/0/0
GE1/0/0 GE1/0/0
GE1/0/0
Loopback1
1.1.1.9/32
Loopback1
3.3.3.9/32
Loopback10
6.6.6.6/32
GE1/0/0 GE2/0/0
S9300-A
P
Loopback1
2.2.2.9/32
GE1/0/0 GE2/0/0
backdoor
Loopback10
5.5.5.5/32
S9300
Interface VLANIF interface IP address
PE1 GigabitEthernet1/0/0 VLANIF 50 100.1.1.2/24
GigabitEthernet2/0/0 VLANIF 10 10.1.1.1/24
PE2 GigabitEthernet1/0/0 VLANIF 60 120.1.1.2/24
GigabitEthernet2/0/0 VLANIF 40 40.1.1.2/24
P GigabitEthernet1/0/0 VLANIF 10 10.1.1.2/24
GigabitEthernet2/0/0 VLANIF 40 40.1.1.1/24
CE1 GigabitEthernet1/0/0 VLANIF 50 100.1.1.1/24
GigabitEthernet2/0/0 VLANIF 20 20.1.1.1/24
CE2 GigabitEthernet1/0/0 VLANIF 60 120.1.1.1/24
GigabitEthernet2/0/0 VLANIF 30 30.1.1.2/24
S9300-A GigabitEthernet1/0/0 VLANIF 20 20.1.1.2/24
GigabitEthernet2/0/0 VLANIF 30 30.1.1.1/24
Quidway S9300 Terabit Routing Switch
Configuration Guide - VPN 3 BGP/MPLS IP VPN Configuration
Issue 03 (2009-08-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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