Details MPLS TE interarea tunnels, covering deployment and configuration strategies that enable scalable traffic engineering across multiple IS-IS areas for extended network reach and flexibility.
MPLS TE interarea tunnel is a network feature that
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allows the creation of MPLS TE tunnels across multiple IGP areas (such as OSPF) and levels (such as IS-IS)
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removes the restriction requiring both tunnel headend and tailend routers to reside in the same area, and
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uses IS-IS or OSPF to establish tunnels, increasing network flexibility and scalability.
| Feature Name |
Release Name |
Description |
|---|---|---|
| MPLS TE Interarea Tunnels |
Release 25.1.1 | Introduced in this release on: Fixed Systems (8010 [ASIC: A100])(select variants only*) *This feature is supported on Cisco 8011-4G24Y4H-I routers. |
| MPLS TE Interarea Tunnels |
Release 24.4.1 |
Introduced in this release on: Fixed Systems (8200 [ASIC: P100], 8700 [ASIC: P100, K100])(select variants only); Modular Systems (8800 [LC ASIC: P100])(select variants only*) This feature allows tunnel creation across multiple IGP areas, eliminating the need for the tunnel headend and tailend routers to reside in the same area. It uses IS-IS or OSPF to establish MPLS TE tunnels across areas, enhancing network flexibility and scalability. *This feature is supported on:
|
For details on configuring MPLS TE interarea tunnels, refer to the MPLS Configuration Guide.