Cisco Cisco IOS Software Release 12.0(22)S
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Cisco IOS Release 12.0(22)S
MPLS Scalability Enhancements for the ATM LSR
Feature History
This document describes how to prevent label-switched paths (LSPs) from being created in an MPLS
network. This document includes the following sections:
network. This document includes the following sections:
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Feature Overview
Some LSPs are often unnecessary between some label-switched edge routers (LERs) in an MPLS
network. Every time a new destination is created, LSPs are created from all LERs in the MPLS network
to the new destination. You can use the mpls ldp request-tags for command with an access list at an
LER to restrict the destinations for which a downstream-on-demand request is issued. You specify the
destination IP addresses that you want to enable/disable from creating LSPs.
network. Every time a new destination is created, LSPs are created from all LERs in the MPLS network
to the new destination. You can use the mpls ldp request-tags for command with an access list at an
LER to restrict the destinations for which a downstream-on-demand request is issued. You specify the
destination IP addresses that you want to enable/disable from creating LSPs.
Benefits
This command allows you to permit/deny creation of some LSPs, while preventing the creation of others.
Using this command reduces the number of LSPs in an MPLS network, which reduces the VC usage in
the network.
Using this command reduces the number of LSPs in an MPLS network, which reduces the VC usage in
the network.
Release
Modification
12.0(14)ST
This feature was introduced.
12.0(22)S
This feature was integrated to Cisco IOS Release 12.0(22)S.