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39-11
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
Configuring Remote LFA-FRR for Ethernet and TDM Pseudowires
Note The Remote LFA-FRR feature is supported on the TDM pseudowires from Cisco IOS Realease 15.3(3)S
onwards. The configuration and restrictions for EoMPLS are also applicable to the TDM pseudowires.
Note During packet loss, SAToP requires one second for convergence and two seconds for recovery.
• Configuring Remote LFA-FRR on a Global Interface
• Configuring Remote LFA-FRR on a GigabitEthernet Interface
• Configuring Remote LFA-FRR on an SVI Interface
• Configuring Remote LFA-FRR on IS-IS
• Configuring LFA-FRR for EoMPLS
• Configuring LFA-FRR for ATM/IMA
• Configuring LFA-FRR for CESoPSN
• Configuring LFA-FRR for SAToP
Step 13
fast-reroute per-prefix {level-1 |
level-2} {all | route-map
route-map-name
}
Example:
Router(config-router)# fast-reroute
per-prefix level-1 all
Configures an FRR path that redirects traffic to a remote LFA tunnel
for either level 1 or level 2 packets.
• level-1—Enables per-prefix FRR of level 1 packets.
• level-2—Enables per-prefix FRR of level 2 packets.
• all—Enables FRR of all primary paths.
• route-map—Specifies the route map for selecting primary
paths for protection.
• route-map-name—Route map name.
Step 14
fast-reroute remote-lfa {level-1 |
level-2} mpls-ldp [maximum-metric
metric-value
]
Example:
Router(config-router)# fast-reroute
remote-lfa level-1 mpls-ldp
Configures an FRR path that redirects traffic to a remote LFA
tunnel.
• level-1—Enables LFA-FRR of level 1 packets.
• level-2—Enables LFA-FRR of level 2 packets.
• mpls-ldp—Specifies that the tunnel type is MPLS or LDP.
• maximum-metric—(Optional) Specifies the maximum metric
value required to reach the release node.
• metric-value—Metric value.
Step 15
mpls ldp sync
Example:
Router(config-router)# mpls ldp sync
Enables MPLS LDP synchronization on interfaces for an OSPF
process.
Command Purpose