Cisco Cisco IOS Software Release 12.0(22)S
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Cisco IOS Release 12.0(22)S
MPLS Traffic Engineering (TE)—Configurable
Path Calculation Metric for Tunnels
Path Calculation Metric for Tunnels
Feature History
This document describes the MPLS Traffic Engineering Configurable Path Calculation Metric for
Tunnels feature. It includes the following sections:
Tunnels feature. It includes the following sections:
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Feature Overview
When MPLS Traffic Engineering (TE) is configured in a network, the Interior Gateway Protocol (IGP)
floods two metrics for every link: the normal IGP (OSPF or IS-IS) link metric and a TE link metric. The
IGP uses the IGP link metric in the normal way to compute routes for destination networks. In previous
releases, MPLS TE used the TE link metric to calculate and verify paths for TE tunnels. When the traffic
engineering metric was not explicitly configured, the traffic engineering metric was the IGP metric.
floods two metrics for every link: the normal IGP (OSPF or IS-IS) link metric and a TE link metric. The
IGP uses the IGP link metric in the normal way to compute routes for destination networks. In previous
releases, MPLS TE used the TE link metric to calculate and verify paths for TE tunnels. When the traffic
engineering metric was not explicitly configured, the traffic engineering metric was the IGP metric.
Release
Modification
12.0(18)ST
This feature was introduced.
12.2(11)S
This feature was integrated into Cisco IOS Release 12.2(11)S.
12.0(22)S
This feature was integrated into Cisco IOS Release 12.0(22)S.