User guide

MPLS Module Installation and User Guide 9-9

PPP Commands

The output of the

show ppp

command has been enhanced to display MPLSCP status

information.

ESRP and VRRP Commands

The MPLS module supports the ESRP and VRRP router redundancy protocols. These

protocols are supported for native Ethernet ports, but not for Packet over SONET (PoS)

ports or MPLS LSPs.

ESRP should not be enabled on a VLAN that is also expected to exchange

routes with other non-ESRP routers (for example, routers using OSPF or RIP).

ESRP supports tracking MPLS LSPs, using the following commands:

config vlan <name> add track-lsp [<lsp_name> | ipaddress

<ipaddress/masklength>]

config vlan <name> delete track-lsp [<lsp_name> | ipaddress

<ipaddress/masklength> | all]

This command configures which LSPs should be used by ESRP to track for determining

the ESRP state of the specified VLAN. The

add track

-lsp command configures ESRP to

track up to eight LSPs. Fail over to the slave switch is based on the total number of

established tracked LSPs. The switch with the greatest number of established tracked

LSPs is elected the master switch for the specified vlan name. Specifying the parameter

<lsp_name>

instructs ESRP to track the status of an RSVP-TE LSP. Specifying the

ipaddress

keyword instructs ESRP to track the LSP status for the IP prefix as defined

by the

parameter. Both types of LSPs can be tracked

simultaneously. The

delete track-lsp

command removes an LSP from ESRP tracking

for the specified vlan name. If the all keyword is specified, all configured LSPs are

removed from ESRP tracking for the specified VLAN.