Static LSP Commands

static-lsp

Syntax

[no] static-lsp lsp-name

Context

config>router>mpls

Description

This command configures static LSPs on the ingress router. The static LSP is a manually configured LSP where the next-hop IP address and the outgoing label (push) must be specified.

The no form of this command deletes this static LSP and associated information.

The LSP must be shut down before it can be deleted. If the LSP is not shut down, the no static-lsp lsp-name command generates a warning message on the console indicating that the LSP is administratively up.

Parameters

lsp-name

identifies the LSP. Allowed values are any string up to 32 characters long composed of printable, 7-bit ASCII characters. If the string contains special characters (#, $, spaces, etc.), the entire string must be enclosed within double quotes.

push

Syntax

push label nexthop ip-address

no push label

Context

config>router>mpls>static-lsp

Description

This command specifies the label to be pushed onto the label stack and the next-hop IP address for the static LSP.

The no form of this command removes the association of the label to push for the static LSP.

Parameters

label

specifies the label to push on the label stack

Label values 16 through 31 are 7705 SAR reserved

Label values 32 through 1023 are available for static assignment

Label values 1024 through 2047 are reserved for future use

Label values 2048 through 18431 are statically assigned for services

Label values 28672 through 131071 are dynamically assigned for both MPLS and services

Label values 131072 through 1048575 are reserved for future use.

Values

16 to 1048575

ip-address

specifies the IP address of the next hop towards the LSP egress router. If an ARP entry for the next hop exists, then the static LSP is marked operational. If an ARP entry does not exist, the software sets the operational status of the static LSP to down and continues to send an ARP request for the configured next hop at fixed intervals.

to

Syntax

to ip-address

Context

config>router>mpls>static-lsp

Description

This command specifies the system IP address of the egress router for the static LSP. For LSPs that are used as transport tunnels for services, the to ip-address must be the system IP address. If the to ip-address does not match the SDP address, the LSP is not included in the SDP definition.

This command is required when creating an LSP.

Default

n/a

Parameters

ip-address

identifies the egress router system address

Values

a.b.c.d

static-lsp-fast-retry

Syntax

static-lsp-fast-retry seconds

no static-lsp-fast-retry

Context

config>router>mpls

Description

This command specifies the fast-retry timer that can be configured for static LSPs. When a static LSP is trying to come up, MPLS tries to resolve the ARP entry for the next hop of the LSP. If the next hop is still down or unavailable, the request may fail. In that case, MPLS starts a non-configurable timer of 30 seconds before making the next request. The fast-retry timer allows the user to configure a shorter retry timer so that the LSP comes up shortly after the next hop is available.

Default

30

Parameters

seconds

fast-retry timer value, in seconds

Values

1 to 30