Configuring PIM-SM

Configuring PIM-SM

* Advanced License Required *

PIM-SM is an advanced routing feature that must be enabled with a license key. If you have purchased an advanced license key, and have enabled routing on the device, you must activate your license as described in the chapter entitled “Activating Licensed Features” in order to enable the PIM-SM command set. If you wish to purchase an advanced routing license, contact Enterasys Networks Sales.

Note: An Enterasys Networks Feature Guide document containing an in-depth discussion of multicast configuration is located on the Enterasys Networks web site:

http://www.enterasys.com/support/manuals/

Design Considerations

Enterasys Networks recommends that administrators consider the following recommendations before configuring the SecureStack C3 for a PIM‐SM environment.

A SecureStack C3 cannot be configured as a Candidate‐RP or a Candidate‐BSR.

A SecureStack C3 should not be the first hop router for a multicast stream. In other words, the multicast stream should not originate on a SecureStack C3.

A SecureStack C3 should not be positioned in the core of a PIM‐SM topology, and should only be positioned at the edge in a PIM‐SM topology. In other words, the SecureStack C3 should only be used to deliver multicast streams to end clients.

Purpose

To enable and configure Protocol Independent Multicast in Sparse Mode (PIM‐SM). This protocol provides the means of dynamically learning how to forward multicast traffic in an environment where group members are sparsely located throughout the network and bandwidth is limited. In situations where members are densely located and bandwidth is plentiful, DVMRP would suffice (see Configuring DVMRP” on page 20‐33.)

PIM‐SM determines the network topology using the underlying unicast routing protocol to build a Multicast Routing Information Base (MRIB).

Note: IGMP must be enabled on all VLANs running PIM-SM, and must also be globally enabled on the SecureStack C3. For details on enabling IGMP, refer to Chapter 13.

Commands

For information about...

Refer to page...

 

 

Global configuration commands

 

 

 

ip pimsm

20-50

 

 

ip pimsm staticrp

20-50

 

 

Interface configuration commands

 

 

 

ip pimsm enable

20-51

 

 

ip pimsm query-interval

20-52

SecureStack C3 Configuration Guide 20-49

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Enterasys Networks 9034313-07 manual Configuring PIM-SM, Design Considerations