Huawei quidway s7700 Configuration Manual page 267

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
[PE1] display ip routing-table vpn-instance vpn1
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: vpn1
Destination/Mask
255.255.255.255/32
Run the display ip routing-table command on the CEs, and you can see that the cost of the
OSPF route to the peer CE is changed to 3, and the next hop is changed to the VLANIF interface
connected to PE. That is, the VPN traffic to the peer CE is forwarded through the backbone
network.
Take CE1 for example.
[CE1] display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destination/Mask
127.255.255.255/32
255.255.255.255/32
Run the tracert command, and you can see that the data from CE1 to CE2 passes through the
VLANIF interface connected to PE1. That is, VPN traffic is transmitted through the backbone
network.
[CE1] tracert 120.1.1.1
traceroute to
1 100.1.1.2 47 ms
2 120.1.1.2 94 ms
3 120.1.1.1 125 ms
[CE1] tracert 30.1.1.2
traceroute to
1 20.1.1.2 80 ms
2 30.1.1.2 100 ms
Run the display ospf sham-link command on the PEs, and you can see the information about
the sham link.
Take PE1 for example.
Issue 01 (2011-07-15)
Destinations : 8
Proto
5.5.5.5/32 Direct 0
6.6.6.6/32 BGP
20.1.1.0/24 OSPF
30.1.1.0/24 OSPF
100.1.1.0/24 Direct 0
100.1.1.2/32 Direct 0
120.1.1.0/24 BGP
Direct 0
Destinations : 15
Proto
5.5.5.5/32 O_ASE
6.6.6.6/32 O_ASE
20.1.1.0/24 Direct 0
20.1.1.1/32 Direct 0
20.1.1.255/32 Direct 0
30.1.1.0/24 OSPF
100.1.1.0/24 Direct 0
100.1.1.1/32 Direct 0
100.1.1.255/32 Direct 0
120.1.1.0/24 OSPF
120.1.1.1/32 O_ASE
127.0.0.0/8 Direct 0
127.0.0.1/32 Direct 0
Direct 0
Direct 0
NOTE
The cost of the OSPF route from CE1 to CE2 is the sum of the cost from CE1 to PE1, the cost of sham
link, and the cost from PE2 to CE2, that is, 1 + 1 + 1 =3.
120.1.1.1(120.1.1.1) 30 hops max,40 bytes packet
31 ms
94 ms
156 ms
30.1.1.2(30.1.1.2) 30 hops max,40 bytes packet
60 ms
90 ms
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Routes : 8
Pre Cost Flags
0 D
255 0 RD
10 11 D
100 12 RD
0 D
0 D
255 0 RD
0 D
Routes : 15
Pre Cost Flags NextHop
150 1
150 1
0
0
0
10 11
0
0
0
10 3
150 1
0
0
0
0
31 ms
94 ms
125 ms
60 ms
130 ms
3 BGP MPLS IP VPN Configuration
NextHop Interface
127.0.0.1 InLoopBack0
3.3.3.9 Vlanif10
100.1.1.1 Vlanif50
3.3.3.9 Vlanif10
100.1.1.2 Vlanif50
127.0.0.1 InLoopBack0
3.3.3.9 Vlanif50
127.0.0.1 InLoopBack0
Interface
D 100.1.1.2 Vlanif50
D 100.1.1.2 Vlanif50
D 20.1.1.1 Vlanif20
D 127.0.0.1 InLoopBack0
D 127.0.0.1 InLoopBack0
D 100.1.1.2 Vlanif20
D 100.1.1.1 Vlanif50
D 127.0.0.1 InLoopBack0
D 127.0.0.1 InLoopBack0
D 100.1.1.2 Vlanif50
D 100.1.1.2 Vlanif50
D 127.0.0.1 InLoopBack0
D 127.0.0.1 InLoopBack0
D 127.0.0.1 InLoopBack0
D 127.0.0.1 InLoopBack0
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