Operation Manual – MPLS L3VPN
H3C S9500 Series Routing Switches
Chapter 1 MPLS L3VPN Configuration
1-99
Issuing the
display ip routing-table
command on the CEs, you should see that the
cost of the OSPF route to the peer CE is now 10 (the cost configured for the sham link),
and that the next hop is now the VLAN interface 1 connected to the PE. This means
that VPN traffic to the peer will be forwarded over the backbone. Takes CE 1 as an
example:
[CE1] display ip routing-table
Routing Tables: Public
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost NextHop Interface
20.1.1.0/24 Direct 0 0 20.1.1.1 Vlan2
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.2/32 Direct 0 0 20.1.1.2 Vlan2
30.1.1.0/24 OSPF 10 1574 100.1.1.2 Vlan1
100.1.1.0/24 Direct 0 0 100.1.1.1 Vlan1
100.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
120.1.1.0/24 OSPF 10 12 100.1.1.2 Vlan1
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
Issuing the
display ospf sham-link
command on the PEs, you should see the
established sham link. Takes PE 1 as an example:
[PE1] display ospf sham-link
OSPF Process 100 with Router ID 100.1.1.2
Sham Link:
Area RouterId Source-IP Destination-IP State Cost
0.0.0.1 100.1.1.2 3.3.3.3 5.5.5.5 P-2-P 10
Issuing the
display ospf sham-link
area
command, you should see that the status of
the peer is Full:
[PE1] display ospf sham-link area 1
OSPF Process 100 with Router ID 100.1.1.2
Sham-Link: 3.3.3.3 --> 5.5.5.5
Neighbour State: Full
Area: 0.0.0.1
Cost: 10 State: P-2-P, Type: Sham
Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1
1.11.8 Example for Configuring BGP AS Number Substitution
I. Network requirements
As shown in
Figure 1-25
, CE 1 and CE 2 belong to VPN 1 and are connected to PE 1
and PE 2 respectively. In addition, they use the same AS number 600.
