Huawei quidway s7700 Configuration Manual page 230

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
[Hub-PE-bgp-vpn_in] peer 110.1.1.1 as-number 65430
[Hub-PE-bgp-vpn_in] import-route direct
[Hub-PE-bgp-vpn_in] quit
[Hub-PE-bgp] ipv4-family vpn-instance vpn_out
[Hub-PE-bgp-vpn_out] peer 110.2.1.1 as-number 65430
[Hub-PE-bgp-vpn_out] peer 110.2.1.1 allow-as-loop 1
[Hub-PE-bgp-vpn_out] import-route direct
[Hub-PE-bgp-vpn_out] quit
[Hub-PE-bgp] quit
After the configuration, run the display bgp vpnv4 all peer command on a PE, and you can
find that the BGP peer relation between the PE and CE is in Established state.
Step 5 Set up MP-IBGP adjacency between the PEs.
# Configure Spoke-PE1.
[Spoke-PE1] bgp 100
[Spoke-PE1-bgp] peer 2.2.2.9 as-number 100
[Spoke-PE1-bgp] peer 2.2.2.9 connect-interface loopback 1
[Spoke-PE1-bgp] ipv4-family vpnv4
[Spoke-PE1-bgp-af-vpnv4] peer 2.2.2.9 enable
[Spoke-PE1-bgp-af-vpnv4] quit
# Configure Spoke-PE2.
[Spoke-PE2] bgp 100
[Spoke-PE2-bgp] peer 2.2.2.9 as-number 100
[Spoke-PE2-bgp] peer 2.2.2.9 connect-interface loopback 1
[Spoke-PE2-bgp] ipv4-family vpnv4
[Spoke-PE2-bgp-af-vpnv4] peer 2.2.2.9 enable
[Spoke-PE2-bgp-af-vpnv4] quit
# Configure the Hub-PE.
[Hub-PE] bgp 100
[Hub-PE-bgp] peer 1.1.1.9 as-number 100
[Hub-PE-bgp] peer 1.1.1.9 connect-interface loopback 1
[Hub-PE-bgp] peer 3.3.3.9 as-number 100
[Hub-PE-bgp] peer 3.3.3.9 connect-interface loopback 1
[Hub-PE-bgp] ipv4-family vpnv4
[Hub-PE-bgp-af-vpnv4] peer 1.1.1.9 enable
[Hub-PE-bgp-af-vpnv4] peer 3.3.3.9 enable
[Hub-PE-bgp-af-vpnv4] quit
After the configuration, run the display bgp peer or display bgp vpnv4 all peer command, and
you can see that the BGP peer relation between the PEs is in Established state.
Step 6 Verify the configuration.
After the configuration, the Spoke-CEs can ping each other. Run the tracert command, and you
can see that the traffic between the Spoke-CEs is forwarded through the Hub-CE. You can also
deduce the number of forwarding devices between the Spoke-CEs based on the TTL in the ping
result.
Take Spoke-CE1 for example.
[Spoke-CE1] ping 120.1.1.1
PING 120.1.1.1: 56
Issue 01 (2011-07-15)
NOTE
The Spoke-PE need not allow the repeated ASN, because the Switch does not check the AS path attribute
in the routing information advertised by the IBGP peers.
data bytes, press CTRL_C to break
Reply from 120.1.1.1: bytes=56 Sequence=1 ttl=250 time=80 ms
Reply from 120.1.1.1: bytes=56 Sequence=2 ttl=250 time=129 ms
Reply from 120.1.1.1: bytes=56 Sequence=3 ttl=250 time=132 ms
Reply from 120.1.1.1: bytes=56 Sequence=4 ttl=250 time=92 ms
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