The configurations of PE2, PE3, PE4, P1, and P2 are the same as the configuration of PE1, and
are not mentioned here.
After the configuration, run the display ip routing-table command, and you can view that PE1
and PE3 can learn the loopback1 route of each other and PE2 and PE4 can learn the loopback1
route of each other.
For example, information about PE1 is displayed as follows:
[PE1] display ip routing-table
Routing Tables: Public
Destinations : 10 Routes : 10
Destination/Mask Proto Pre Cost Flags NextHop Interface
1.1.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
3.3.3.3/32 ISIS 15 20 D 100.1.1.2 Vlanif10
5.5.5.5/32 ISIS 15 10 D 100.1.1.2 Vlanif10
100.1.1.0/30 Direct 0 0 D 100.1.1.1 Vlanif10
100.1.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
100.1.1.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
100.3.1.0/30 ISIS 15 20 D 100.1.1.2 Vlanif10
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
Step 3 Configure basic MPLS functions and MPLS LDP, and set up LDP LSPs on the MPLS backbone
network.
# Configure PE1.
# Enable MPLS and LDP, specify the LSR ID as the IP address of the loopback interface, and
trigger setup of LSPs.
[PE1] mpls lsr-id 1.1.1.1
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
[PE1-mpls-ldp] quit
# Enable MPLS and LDP on interfaces on the backbone network.
[PE1] interface vlanif 10
[PE1-Vlanif10] mpls
[PE1-Vlanif10] mpls ldp
[PE1-Vlanif10] quit
# The configurations of PE2, PE3, PE4, P1, and P2 are the same as the configuration of PE1,
and are not mentioned here.
After the configuration, LDP sessions must be set up between PE1 and the P device, and between
PE2 and the P device. Run the display mpls ldp session command, and you can view that the
LDP sessions are in Operational state. Run the display mpls ldp lsp command, and you can
view status of LDP LSPs.
For example, information about PE1 is displayed as follows:
<PE1> display mpls ldp session
LDP Session(s) in Public Network
Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)
A '*' before a session means the session is being deleted.
------------------------------------------------------------------------------
PeerID Status LAM SsnRole SsnAge KASent/Rcv
------------------------------------------------------------------------------
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
279
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