4000 Router Series MPLS Configuration Guide

101

Displaying tunnel information

Execute the display command in any view.

Task Command

Display tunnel information.

display mpls tunnel { all | statistics | [ vpn-instance vpn-instance-name ]

destination { tunnel-ipv4-dest | tunnel-ipv6-dest } }

Preferred tunnel configuration example

Network requirements

PE 1 has multiple tunnels to reach PE 2: one MPLS TE tunnel on the interface Tunnel1, one GRE tunnel on

the interface Tunnel2, and one LDP LSP tunnel.

Two MPLS VPN instances, vpna and vpnb, exist on PE 1. Configure PE 1 to use the MPLS TE tunnel to

forward traffic for both VPNs.

Configuration procedure

1. Create a tunnel policy named preferredte1, and configure tunnel 1 as the preferred tunnel:

<PE1> system-view

[PE1] tunnel-policy preferredte1

[PE1-tunnel-policy-preferredte1] preferred-path tunnel 1

[PE1-tunnel-policy-preferredte1] quit

2. Configure MPLS VPN instances and apply the tunnel policy to the VPN instances:

# Create MPLS VPN instance vpna, and apply tunnel policy preferredte1 to it.

[PE1] ip vpn-instance vpna

[PE1-vpn-instance-vpna] route-distinguisher 100:1

[PE1-vpn-instance-vpna] vpn-target 100:1

[PE1-vpn-instance-vpna] tnl-policy preferredte1

[PE1-vpn-instance-vpna] quit

# Create MPLS VPN instance vpnb, and apply tunnel policy preferredte1 to it.

[PE1] ip vpn-instance vpnb

[PE1-vpn-instance-vpnb] route-distinguisher 100:2

[PE1-vpn-instance-vpnb] vpn-target 100:2

[PE1-vpn-instance-vpnb] tnl-policy preferredte1

Exclusive tunnel configuration example

Network requirements

PE 1 has multiple tunnels to reach PE 2: one MPLS TE tunnel on the interface Tunnel1, one GRE tunnel on

the interface Tunnel2, and one LDP LSP tunnel.

Two MPLS VPNs, vpna and vpnb, exist on PE 1. The VPN vpna exclusively uses the MPLS TE tunnel, and

the VPN vpnb exclusively uses the GRE tunnel.