Alcatel-Lucent 6850-48 网络指南

Configuring MPLS

Configuring MPLS

OmniSwitch AOS Release 6 Network Configuration Guide

page 10-27

-> 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.

To configure the destination (endpoint) of the static LSP tunnel, use the 

 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. 

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.

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 

 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.

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