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4. Configure an MPLS TE tunnel on Switch A, the ingress node of the primary CRLSP:
# Configure an explicit path named pri-path for the primary CRLSP.
[SwitchA] explicit-path pri-path
[SwitchA-explicit-path-pri-path] nexthop 2.1.1.2
[SwitchA-explicit-path-pri-path] nexthop 3.1.1.2
[SwitchA-explicit-path-pri-path] nexthop 4.1.1.2
[SwitchA-explicit-path-pri-path] nexthop 4.4.4.4
[SwitchA-explicit-path-pri-path] quit
# Configure an MPLS TE tunnel.
[SwitchA] interface tunnel 1 mode mpls-te
[SwitchA-Tunnel1] ip address 10.1.1.1 255.255.255.0
# Specify the tunnel destination address as the LSR ID of Switch D.
[SwitchA-Tunnel1] destination 4.4.4.4
# Specify the tunnel signaling protocol as RSVP-TE.
[SwitchA-Tunnel1] mpls te signaling rsvp-te
# Specify the explicit path as pri-path.
[SwitchA-Tunnel1] mpls te path preference 1 explicit-path pri-path
# Enable FRR for the MPLS TE tunnel.
[SwitchA-Tunnel1] mpls te fast-reroute
[SwitchA-Tunnel1] quit
# Execute the display interface tunnel command on Switch A. The output shows that the
MPLS TE interface Tunnel1 is up.
[SwitchA] display interface tunnel
Tunnel1 current state: UP
Line protocol current state: UP
Description: Tunnel1 Interface
The Maximum Transmit Unit is 64000
Internet Address is 10.1.1.1/24 Primary
Tunnel source unknown, destination 4.4.4.4
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: 1911 bytes/sec, 15288 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 drops
1526 packets output, 22356852 bytes, 0 drops
# Execute the display mpls te tunnel-interface command on Switch A to display detailed
information about the MPLS TE tunnel interface.
[SwitchA] display mpls te tunnel-interface
Tunnel Name : Tunnel 1
Tunnel State : Up (Main CRLSP up, Shared-resource CRLSP down)
Tunnel Attributes :
LSP ID : 16802 Tunnel ID : 1
Admin State : Normal
Ingress LSR ID : 2.2.2.2 Egress LSR ID : 4.4.4.4
Signaling : RSVP-TE Static CRLSP Name : -
Resv Style : SE
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