Configuring Mpls Te Tunnel With Dynamic Signaling Protocol - 3Com S7906E Configuration Manual

Configuring MPLS TE Tunnel with Dynamic Signaling Protocol

Dynamic signaling protocol can adapt the path of a TE tunnel to network changes and implement
redundancy, FRR, and other advanced features.
The following describes how to create an MPLS TE tunnel with a dynamic signaling protocol:
Configure MPLS TE properties for links and advertise them through IGP TE extension to form a
TEDB.
Configure tunnel constraints.
Use the CSPF algorithm to calculate a preferred path based on the TEDB and tunnel constraints.
Establish the path by using the signaling protocol RSVP-TE or CR-LDP.
To form a TEDB, you must configure the IGP TE extension for the nodes on the network to send TE
LSAs. If the IGP TE extension is not configured, the CR-LSP is created based on IGP routing rather
than computed by CSPF.
Configuration Prerequisites
Before making the configuration, do the following:
Configure static routing or an IGP protocol to make sure that all LSRs are reachable.
Configure MPLS basic capabilities.
Configure MPLS TE basic capabilities.
Configuration Procedure
Complete the following tasks to configure an MPLS TE tunnel using a dynamic signaling protocol:
Configuring CSPF
Configuring OSPF TE
Configuring IS-IS TE
Configuring an MPLS TE explicit path
Configuring MPLS TE tunnel constraints
Establishing an MPLS TE tunnel with RSVP-TE
Configuring CSPF
Follow these steps to configure CSPF:
Task
1-17
Remarks
Optional
Required when CSPF is configured
Choose one depending on the IGP protocol
used.
Optional
Optional
Optional
By default, RSVP-TE is used for establishing an
MPLS TE tunnel.