Alcatel-Lucent 7450 Manual page 262

Ethernet service switch

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MPLS Commands

from ip-address

config>router>mpls>lsp

This optional command specifies the IP address of the ingress router for the LSP. When this

command is not specified, the system IP address is used. IP addresses that are not defined in the

system are allowed. If an invalid IP address is entered, LSP bring-up fails and an error is logged.

If an interface IP address is specified as the from address, and the egress interface of the nexthop IP

address is a different interface, the LSP is not signaled. As the egress interface changes due to

changes in the routing topology, an LSP recovers if the from IP address is the system IP address and

not a specific interface IP address.

Only one from address can be configured.

The system IP address

ip-address — This is the IP address of the ingress router. This can be either the interface or the system

hop-limit number

no hop-limit

config>router>mpls>lsp

config>router>mpls>lsp>fast-reroute

This command specifies the maximum number of hops that an LSP can traverse, including the

ingress and egress routers. An LSP is not set up if the hop limit is exceeded. This value can be

changed dynamically for an LSP that is already set up with the following implications:

The no form of this command returns the parameter to the default value.

number — The number of hops the LSP can traverse, expressed as an integer.

IP address. If the IP address is local, the LSP must egress through that local interface which

ensures local strictness.

System IP address

System IP or network interface IP addresses

If the new value is less than the current number of hops of the established LSP, the LSP is

brought down. Software then tries to re-establish the LSP within the new hop-limit number. If

the new value is equal to or greater than the current number hops of the established LSP, then the

LSP is not affected.

7450 ESS MPLS Guide