106
[SwitchA-Vlan-interface4] rsvp enable
[SwitchA-Vlan-interface4] quit
# Configure Switch B, Switch C, and Switch D in the same way that Switch A is configured.
(Details not shown.)
4. Configure an MPLS TE tunnel on Switch A:
# Configure the MPLS TE tunnel interface Tunnel 3.
[SwitchA] interface tunnel 3 mode mpls-te
[SwitchA-Tunnel3] ip address 9.1.1.1 24
# Specify the tunnel destination address as the LSR ID of Switch C.
[SwitchA-Tunnel3] destination 3.3.3.9
# Configure MPLS TE to use RSVP-TE to establish the tunnel.
[SwitchA-Tunnel3] mpls te signaling rsvp-te
# Enable CRLSP hot backup for the tunnel.
[SwitchA-Tunnel3] mpls te backup hot-standby
[SwitchA-Tunnel3] quit
5. Configure a static route on Switch A to direct the traffic destined for subnet 20.1.1.0/24 to MPLS
TE tunnel 3.
[SwitchA] ip route-static 20.1.1.2 24 tunnel 3 preference 1
Verifying the configuration
# Execute the display interface tunnel command on Switch A. The output shows that the tunnel
interface Tunnel 3 is up.
[SwitchA] display interface tunnel
Tunnel3 current state: UP
Line protocol current state: UP
Description: Tunnel3 Interface
The Maximum Transmit Unit is 64000
Internet Address is 9.1.1.1/24 Primary
Tunnel source unknown, destination 3.3.3.9
Tunnel bandwidth 64 (kbps)
Tunnel TTL 255
Tunnel protocol/transport CR_LSP
Last clearing of counters: Never
Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec
Last 300 seconds output rate: 1802 bytes/sec, 14416 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 drops
351 packets output, 3105652 bytes, 0 drops
# Execute the display mpls lsp command on Switch A. The output shows that two CRLSPs exist on
the switch, one with the output interface VLAN-interface 1 and the other with the output interface
VLAN-interface 4.
[SwitchA] display mpls lsp
FEC Proto In/Out Label Interface/Out NHLFE
1.1.1.9/3/30106 RSVP -/1137 Vlan1
1.1.1.9/3/30107 RSVP -/1150 Vlan4
10.1.1.2 Local -/- Vlan1
30.1.1.2 Local -/- Vlan4
# Execute the display rsvp lsp verbose command on Switch A to display the paths used by the two
CRLSPs.
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