Users Guide

Version Description
7.7.1.0 Introduced on the C-Series.
7.5.1.0 Introduced on the E-Series.
Usage Information
Dell Networking OS supports standard access lists for the SSM range. You cannot use extended ACLs for
configuring the SSM range. If you configure an extended ACL and then used in the ip pim ssm-range
{access list name} configuration, an error is reported.
However, if you configure ip pim ssm-range {access list name} first and then you configure the ACL
as an Extended ACL, an error is not reported and the ACL is not applied to the SSM range.
Dell Networking OS-recommended best-practices are to configure the standard ACL, and then apply the ACL to
the SSM range. After the SSM range is applied, the changes are applied internally without requiring clearing of the
tree information base (TIB).
When the ACL rules change, the ACL and protocol-independent multicast (PIM) modules apply the new rules
automatically.
When you configure the SSM range, Dell Networking OS supports SSM for configured group range as well as the
default SSM range.
When you remove the SSM ACL, PIM SSM is supported for the default SSM range only.
ip pim spt-threshold
To switch to the shortest path tree when the traffic reaches the specified threshold value, configure the PIM router.
Syntax
ip pim [vrf vrf-name] spt-threshold [value | infinity]
To return to the default value, use the no ip pim [vrf vrf-name] spt-threshold [infinity]
command.
Parameters
value (OPTIONAL) Enter the traffic value in kilobits per second. The default is 10 packets per
second . A value of zero (0) causes a switchover on the first packet.
vrf vrf-name (OPTIONAL) Enter the keyword vrf followed by the name of the VRF to configure the
PIM router on that VRF.
NOTE: Applies to specific VRF if input is provided, else applies to Default
VRF.
infinity (OPTIONAL) Enter the keyword infinity to never switch to the source-tree.
Defaults Not configured.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
PIM-Sparse Mode (PIM-SM) 1191