Enabling Bidirectional Mode - Cisco Catalyst 4500 series Administration Manual

Configuring IP Multicast Routing
When an interface is treated in sparse mode, it is populated in a multicast routing table's outgoing
interface list when either of the following is true:
•
•
To enable PIM to operate in the same mode as the group, enter this command:
Command
Switch(config-if)# ip pim
sparse-dense-mode

Enabling Bidirectional Mode

Most of the configuration requirements for Bidir-PIM are the same as those for configuring PIM-SM.
You need not enable or disable an interface for carrying traffic for multicast groups in bidirectional
mode. Instead, you configure which multicast groups you want to operate in bidirectional mode. Similar
to PIM-SM, you can perform this configuration with Auto-RP, static RP configurations, or the PIM
Version 2 bootstrap router (PIMv2 BSR) mechanism.
To enable Bidir-PIM, perform this task in global configuration mode:
Command
Switch(config)# ip pim bidir-enable
To configure Bidir-PIM, enter one of these commands, depending on which method you use to distribute
group-to-RP mappings:
Command
Switch(config)# ip pim rp-address
rp-address [access-list] [override]
bidir
Switch(config)# ip pim rp-candidate
type number [group-list access-list]
bidir
Switch(config)# ip pim send-rp-address
type number scope ttl-value
[group-list access-list] [interval
seconds] bidir
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
37-16
When members or DVMRP neighbors exist on the interface
When an explicit join has been received by a PIM neighbor on the interface
Chapter 37
Purpose
Enables PIM to operate in sparse or dense mode,
depending on the group.
Purpose
Enables bidir-PIM on a switch.
Purpose
Configures the address of a PIM RP for a particular
group, and specifies bidirectional mode.
Use this command when you are not distributing
group-to-RP mappings using either Auto-RP or the
PIMv2 BSR mechanism
Configures the router to advertise itself as a PIM
Version 2 candidate RP to the BSR, and specifies
bidirectional mode.
Use this command when you are using the PIMv2 BSR
mechanism to distribute group-to-RP mappings.
Configures the router to use Auto-RP to configure the
groups the router is willing to act as RP, and specifies
bidirectional mode.
Use this command when you are using Auto-RP to
distribute group-to-RP mappings.
Configuring IP Multicast
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