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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 39 Remote Loop-Free Alternate - Fast Reroute
How to Configure Remote Loop-Free Alternate - Fast Reroute
nexthop 6.6.6.6 MPLS-Remote-Lfa6, repair, adjacency IP midchain out of MPLS-Remote-Lfa6
12CD7880
output chain: label [31|537]
FRR Primary (0x11139020)
<primary: TAG adj out of Vlan4004, addr 71.14.1.4 12D8A780>
<repair: TAG midchain out of MPLS-Remote-Lfa6 12CD6580 label 338 TAG adj out of
Vlan4003, addr 71.17.1.7 12CD7160>
To display local Routing Information Base (RIB) or locally redistributed routes use the following show
command.
Router# show ip ospf rib 171.1.1.0
OSPF Router with ID (1.1.1.1) (Process ID 1)
Base Topology (MTID 0)
OSPF local RIB
Codes: * - Best, > - Installed in global RIB
LSA: type/LSID/originator
*> 171.1.1.0/24, Intra, cost 2, area 0
SPF Instance 130, age 00:03:52
Flags: RIB, iSPF
via 71.14.1.4, Vlan4004
Flags: RIB, iSPF
LSA: 1/2.0.0.2/2.0.0.2
repair path via 6.6.6.6, MPLS-Remote-Lfa6, cost 4
Flags: RIB, Repair, IntfDj, BcastDj, CostWon
LSA: 1/2.0.0.2/2.0.0.2
To display information for an IS-IS per-prefix LFA-FRR configuration, use the following show
command.
Router# show isis fast-reroute remote-lfa tunnels
Tag Null - Fast-Reroute Remote-LFA Tunnels:
MPLS-Remote-Lfa1: use Vl4003, nexthop 71.17.1.7, end point 6.6.6.6
MPLS-Remote-Lfa2: use Vl4004, nexthop 71.14.1.4, end point 5.5.5.5
To display entries in the CEF Forwarding Information Base (FIB) use the following show command.
Router# show ip cef 171.1.1.0 internal
171.1.1.0/24, epoch 0, RIB[I], refcount 5, per-destination sharing
sources: RIB, LTE
feature space:
IPRM: 0x00028000
LFD: 171.1.1.0/24 1 local label
local label info: global/18
contains path extension list
disposition chain 0x12B537C8
ifnums:
Vlan4004(30): 71.14.1.4
MPLS-Remote-Lfa1(32)
path 12C55CB4, path list 12C856E8, share 1/1, type attached nexthop, for IPv4, flags
has-repair
MPLS short path extensions: MOI flags = 0x20 label none
nexthop 71.14.1.4 Vlan4004 label [none|23], adjacency IP adj out of Vlan4004, addr
71.14.1.4 1139FAA0