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Configuring PIM Configuring PIM
OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007 page 7-23
You can also specify whether or not this static configuration overrides the dynamically learned group
mapping information for the specified group using the override parameter. As specifying the priority
value obsoletes the override option, you can use either the priority or override parameter only. By
default, the priority option is not set, and the override option is set to false.
Use the no form of this command to remove a static configuration of a SSM mode group mapping.
-> no ip pim ssm group 224.0.0.0/4
PIM-Source-Specific Multicast (SSM) mode for the default SSM address range (232.0.0.0 through
232.255.255.255) reserved by the Internet Assigned Numbers Authority is not enabled automatically and
must be configured manually to support SSM. You can also map additional multicast address ranges for
the SSM group. However, the multicast groups in the reserved address range can be mapped only to the
SSM mode.
Verifying Group Mapping
To view PIM-Dense Mode Group Mappings
Displays the static configuration of multicast group mappings for PIM-Dense Mode (DM).
-> show ip pim dense group
Group Address/Pref Length Mode Override Precedence Status
---------------------------+-----+--------+----------+--------
224.0.0.0/4 dm false none enabled
To view PIM-Source-Specific Multicast Mode Group Mappings
Displays the static configuration of multicast group mappings for PIM-Source-Specific Multicast (SSM)
mode.
-> show ip pim ssm group
Group Address/Pref Length Mode Override Precedence Status
---------------------------+-----+--------+----------+--------
224.0.0.0/4 ssm false none enabled
Automatic Loading and Enabling of PIM following a System
Boot
If any PIM command is saved to the boot.cfg file in the post-boot running directory, PIM will be loaded
into memory automatically. The post-boot running directory refers to the directory the switch will use as
its running directory following the next system boot (i.e., Working or Certified). If the command syntax ip
pim sparse status enable or ip pim dense status enable is saved to the boot.cfg file in the post-boot
running directory, PIM will be automatically loaded into memory and globally enabled following the next
system boot. For detailed information on the Working and Certified directories and how they are used
during system boot, see the “CMM Directory Management” chapter in the OmniSwitch 6800/6850/9000
Switch Management Guide.