CSPF-TE Commands
This chapter is a reference for Constrained Shortest Path First Traffic Engineering (CSPF-TE) commands:
cspf default-retry-interval
Use this command to set the default route computation retry interval for an OSPFv2 instance. This value is used for route recomputation (in the case of computation failures) and no retry interval is specified for a given LSP.
Use the no parameter with this command to unset default route computation retry interval.
Command Syntax
cspf default-retry-interval <1-3600>
no cspf default-retry-interval
Parameter
<1-3600>
The retry interval in seconds. The default is 10 seconds.
Default
10 seconds
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#cspf default-retry-interval 720
cspf disable-better-protection
Use this command to disable better protection (Default).
Command Syntax
cspf disable-better-protection
Parameter
None
Default
None
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#cspf disable-better-protection
cspf enable-better-protection
Use this command to enable better protection.
Command Syntax
cspf enable-better-protection
Parameter
None
Default
None
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#cspf enable-better-protection
cspf enable-resource-constraint-crankback
Use this command to enable resource constraint checking for crank back when the selected path does not meet the requirements.
Use cspf disable-resource-constraint-crankback to disable resource constraint checking for crank back when the selected path does not meet the requirements.
Command Syntax
cspf enable-resource-constraint-crankback
cspf disable-resource-constraint-crankback
Parameter
None
Default
cspf disable-resource-constraint-crankback
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#cspf enable-resource-constraint-crankback
cspf tie-break
Use this command to set the tie-break method for an OSPFv2 instance. This selects a link (during route computation) when more than one candidate link satisfies all the route constraints and the associated cost and hop limit link attributes are equal.
Use the no parameter with this command to unset tie-break method.
Command Syntax
cspf tie-break (random|least-fill|most-fill)
no cspf tie-break
Parameters
random
Pick any path at random. This method places an equal number of LSPs on each link without taking into account the available bandwidth ratio. This is the default tie-break method.
least-fill
Pick the path with the largest minimum available bandwidth ratio. This method equalizes the reservation on each link.
most-fill
Pick the path with the smallest minimum available bandwidth ratio. This method uses one link until it is completely full and then uses the next link.
Default
By default, the tie-break method is set to random.
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#cspf tie-break least-fill