I have a MPLS TE tunnel from 1 to xrv.The primary LSP is 1-2-4-10-xr5.(1-head , XRv-tail)
I protected the link between 2 and 4(MPLS TE FRR) and there are 2 backup tunnels those are tunnel 0 and tunnel 1 with default configuration.
Tunnel 0 LSP ->2-3-4 (2 head end and 4 tail)
Tunnel 1 LSP ->2-12-4 (2 head end and 4 tail)
Whenever protected path goes down, Tunnel 0 is being always preffered over Tunnel 1 . Tunnel-1 is preffered only if tunnel 0 is down.
can anyone help me to understand the predefined rule to prefer the backup tunnel while having multiple backup tunnel?(Both tunnels are NHOP)
R2#sh running-config int gigabitEthernet 3 --->protected link configuration
Building configuration...
Current configuration : 360 bytes
!
interface GigabitEthernet3
ip address 192.168.24.2 255.255.255.0
negotiation auto
mpls traffic-eng tunnels
mpls traffic-eng backup-path Tunnel0
mpls traffic-eng backup-path Tunnel1
bfd interval 50 min_rx 50 multiplier 3
no mop enabled
no mop sysid
ip rsvp bandwidth
ip rsvp signalling hello bfd
ip rsvp signalling hello refresh interval 5000
end
MPLS_TE_HEAD#sh running-config int tunnel0 --->MPLS TE HEAD END
Building configuration...
Current configuration : 339 bytes
!
interface Tunnel0
ip unnumbered Loopback0
mpls ip
tunnel mode mpls traffic-eng
tunnel destination 5.5.5.5
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng priority 7 7
tunnel mpls traffic-eng bandwidth 10000
tunnel mpls traffic-eng path-option 5 explicit name forever
tunnel mpls traffic-eng fast-reroute
end
MPLS_TE_HEAD#
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