Configures a Fast Reroute (FRR) path.
Router MPLS configuration mode
Fast Reroute paths are used as secondary routes or backup routes to increase network high availability. Several reroute options are available; for example, the bandwidth can be configured for the path using the bandwidth subcommand and the setup and hold priority can be configured for the path using the priority subcommand. Refer to the Extreme SLX-OS MPLS Configuration Guide for detailed Fast Reroute configuration information.
Note
Hardware support for LSP FRR is available only for TPID 0x8100. If you require a label switched path with fast reroute (LSP FRR) configuration, none of the routable interfaces (whether a router port or a LIF of a VE) can have a nondefault TPID configuration, because FRR always assumes that the link layer has the default TPID of 0x8100.
The following error message is displayed if you try to configure a fast reroute path using the frr command on an interface with a non-default TPID:
%Error: Not allowed, when a non-default TPID (tag-type) is configured on any port-channel or physical interfaces.
MPLS is supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540 devices only.
The following example displays how to configure a Fast Reroute LSP named frr_tunnelA with a bandwidth of 1000 kbits per second, and a set up and hold priority of 6 and 1.
device# configure device(config)# router mpls device(config-router-mpls)# lsp frr_tunnelA device(config-router-mpls-lsp-frr_tunnelA)# frr device(config-router-mpls-lsp-frr_tunnelA-frr)# bandwidth 1000 device(config-router-mpls-lsp-frr_tunnelA-frr)# priority 6 1