Administrator Guide

Table Of Contents
Version Description
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.
Z9000
Syntax
ip pim spt-threshold [infinity]
To return to the default value, use the no ip pim spt-threshold [infinity] command.
Parameters
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, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.5(0.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
Usage
Information
This command is applicable to last hop routers on the shared tree towards the rendezvous point (RP).
no ip pim snooping dr-flood
Disable the flooding of multicast packets to the PIM designated router.
Syntax
no ip pim snooping dr-flood
PIM-Sparse Mode (PIM-SM) 951