Cisco Catalyst 4500 Series Software Configuration Guide

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 38 Configuring IP Multicast
Configuring IP Multicast Routing
If you configure sparse-dense mode, the idea of sparseness or denseness is applied to the group on the
switch, and the network manager should apply the same concept throughout the network.
Another benefit of sparse-dense mode is that Auto-RP information can be distributed in a dense-mode
manner; yet, multicast groups for user groups can be used in a sparse-mode manner. You do not need to
configure a default RP at the leaf routers.
When an interface is treated in dense mode, it is populated in a multicast routing table’s outgoing
interface list when either of the following is true:
• When members or DVMRP neighbors exist on the interface
• When PIM neighbors exist and the group has not been pruned
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:
• When members or DVMRP neighbors exist on the interface
• When an explicit join has been received by a PIM neighbor on the interface
To enable PIM to operate in the same mode as the group, enter this command:
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:
To configure Bidir-PIM, enter one of these commands, depending on which method you use to distribute
group-to-RP mappings:
Command Purpose
Switch(config-if)# ip pim
sparse-dense-mode
Enables PIM to operate in sparse or dense mode,
depending on the group.
Command Purpose
Switch(config)# ip pim bidir-enable
Enables bidir-PIM on a switch.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E