secondary cspf
Use this command to enable the use of Constrained Shortest Path First (CSPF) server for an explicit route to the egress, or all RSVP sessions.
The CSPF server computes paths for LSPs that are subject to constraints such as bandwidth, hop count, administrative groups, priority, and explicit routes. When computing paths for LSPs, CSPF considers not only the topology of the network and the attributes defined for the LSP, but also the links. It attempts to minimize congestion by intelligently balancing the network load.
Use the
no secondary cspf command to revert to the default settings.
Note: CSPF server information is not signaled across session and hence sessions in transit and egress nodes will not be aware of the CSPF server. So, in multi CSPF scenarios, neighbor down event from a CSPF server restart all sessions irrespective of which CSPF server sessions were using.
Command Syntax
secondary cspf
Parameters
None
Default
By default, secondary cspf is enabled
Command Mode
Trunk mode
Applicability
This command was introduced before OcNOS version 1.3.
Example
This example shows using the no cspf command in Trunk mode to disable CSPF for the primary LSP.
#configure terminal
(config)#rsvp-trunk mytrunk
(config-trunk)#secondary cspf
Last modified date: 07-13-2023