Cisco Cisco IOS Software Release 12.0(14)S
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Release 12.0(14)S
MPLS Traffic Engineering (TE)—IP Explicit
Address Exclusion
Address Exclusion
This feature modules describes MPLS traffic engineering IP explicit address exclusion for
Release 12.0(14)S.
Release 12.0(14)S.
This document contains the following sections:
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Feature Overview
The MPLS traffic engineering Internet Protocol (IP) explicit address exclusion feature provides a means
to exclude a link or node from the path for an MPLS traffic engineering label-switched path (LSP).
to exclude a link or node from the path for an MPLS traffic engineering label-switched path (LSP).
The feature is accessible via the ip explicit-path command that allows you to create an IP explicit path
and enter a configuration submode for specifying the path. The feature adds to the submode commands
the exclude-address command for specifying addresses to exclude from the path.
and enter a configuration submode for specifying the path. The feature adds to the submode commands
the exclude-address command for specifying addresses to exclude from the path.
If the exclude-address for an MPLS traffic engineering LSP identifies a flooded link, the
constraint-based shortest path first (CSPF) routing algorithm doesn’t consider that link when computing
paths for the LSP. If the exclude-address specifies a flooded MPLS traffic engineering router ID, the
CSPF routing algorithm doesn’t allow paths for the LSP to traverse the node identified by the router ID.
constraint-based shortest path first (CSPF) routing algorithm doesn’t consider that link when computing
paths for the LSP. If the exclude-address specifies a flooded MPLS traffic engineering router ID, the
CSPF routing algorithm doesn’t allow paths for the LSP to traverse the node identified by the router ID.
Benefits
This feature is useful when you want MPLS traffic engineering LSPs to avoid certain links and nodes.