Using Static Fast Reroute (Frr) - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring MPLS
-> configure router mpls no static-lsp to-R3
The above commands shutdown the "to-R3" static LSP instance and then delete the instance from the
switch configuration.
Once the static LSP instance is created and associated with a name, configuring the destination system IP
address and a label-map push action for the instance is required.
Configuring the Static LSP Destination
To configure the destination (endpoint) of the static LSP tunnel, use the
to command and specify the name of the static LSP instance and the system IP address of the egress
router. For example:
-> configure router mpls static-lsp to 10.10.10.1
When configuring the static LSP destination, specify the system IP address of the far-end router for the
Service Distribution Point (SDP) to which the static LSP is associated.
Configuring the Static LSP Label-Map Push Action
The static LSP label-map push action pushes a label on to the top of a the label stack and then forwards
the packet to the next-hop transit router in the static LSP. This type of action is only configured on ingress
routers for a static LSP instance.
To configure a label-map push action, use the
and specify the name of the static LSP instance, the label number to push onto the label stack, and the
next-hop IP address. For example:
-> configure router mpls static-lsp to-R3 push 777 next-hop 192.168.10.2
Note that if an ARP entry for the specified next hop exists, then the static LSP is marked as operational. If
an ARP entry does not exist, then the static LSP is marked as operationally down and the local router
continues to ARP for the configured next hop at a fixed interval.
Enable or Disable the Static LSP Instance
When a static LSP instance is created, the instance is disabled by default. Once a destination system IP
address and push action is associated with the instance, use the
down command with the no shutdown option to enable the static LSP. For example:
-> configure router mpls static-lsp to-R3 no shutdown.
To disable the static LSP, enter the following command:
-> configure router mpls static-lsp to-R3 shutdown.
Note that disabling the static LSP instance does not remove the LSP configuration from the switch.
However, packet forwarding to the next-router is stopped until the instance is enabled.

Using Static Fast ReRoute (FRR)

The static FRR mechanism that is provided with this implementation of MPLS is implicitly activated
when the following occurs:
•
A static LSP instance is configured with a different name but with the same destination system IP
address as an existing static LSP instance configured on the same ingress router. See
Static LSP Destination" on page
OmniSwitch AOS Release 6 Network Configuration Guide
configure router mpls static-lsp push next-hop
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configure router mpls static-lsp
configure router mpls static-lsp shut-
Configuring MPLS
command
"Configuring the
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