Alcatel-Lucent 6850-48 网络指南

Configuring MPLS

Configuring MPLS

page 10-24

OmniSwitch AOS Release 6 Network Configuration Guide

• Configure the MPLS interface—An MPLS interface is required on each router that will participate in 

the static LSP tunnel. By default, this interface is enabled. See 

• Configure the MPLS label-map—Specifies the ingress label number on which the transit router will 

perform a swap action. See 

.

• Configure the MPLS label-map swap action—Swaps an outgoing label number for the incoming 

label-map number and then forwards the packet to the specified next-hop router. See 

• Configure a label-map protect-swap action—(optional) A protect-swap action is configured only on 

transit LSRs and defines an alternate path if the link to the next-hop router goes down. See 

• Enable the label-map—By default, the label-map associated with the MPLS interface is disabled. 

After the incoming label number is specified and the swap operation is configured, enable the label-
map operation. See 

.

• Configure the MPLS interface—An MPLS interface is required on each router that will participate in 

the static LSP tunnel. By default, this interface is enabled. See 

• Configure the MPLS label-map—Specifies the ingress label number on which the egress router will 

perform a swap action. See 

.

• Configure the MPLS label-map pop action—Removes the incoming label number from the top of 

the packet. Once the label is popped, the packet is forwarded based on the service header of the packet. 
See 

.

• Enable the label-map—By default, the label-map associated with the MPLS interface is disabled. 

After the incoming label-map number is specified and the pop operation is configured, enable the label-
map operation. See 

.

Consider the following guidelines when configuring static LSPs:

• The Static LSP cannot originate and terminate on the same router, as this may cause a loop.

• The destination address specified for the Static LSP on the ingress router has to match the Loopback0 

IP address of the egress router if the static LSP is associated with a Service Distribution Point (SDP) 
tunnel. SDPs are used to provision VPLS services.

• A Service Distribution Point (SDP), used to provision VPLS services, is associated with either a static 

LSP or an LDP-signaled LSP, but not both. 

• The static LSP configuration is supported on three different types of topologies: linear, triangular mesh, 

and square mesh. These topologies are supported as long as the same router does not form both the 
ingress and egress nodes of the static LSP.

• ECMP LSPs are not supported with the static LSP feature. Only a single next-hop can be specified at 

each hop of the Static LSP.