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Configuration notes – Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide

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IS-IS shortcuts

5

The IS-IS native route has a better metric than the LSP tunnel.

Another shortcut has a better metric than the LSP tunnel.

Configuration notes

Consider the following configuration notes:

IS-IS shortcuts require MPLS and IS-IS Traffic Engineering (TE) to be enabled.

IS-IS does not use an LSP tunnel as a shortcut when the To address of the tunnel is not the
router ID of the destination router.

Where multiple IS-IS shortcuts have the same cost, IS-IS installs LSP tunnel-based ECMP
routes.