Cisco Catalyst 4500 Series Software Configuration Guide

28-23
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 28 Configuring IGMP Snooping and Filtering, and MVR
Configuring MVR
Because MVR multicast traffic is sent only on mVLANs, duplicating television-channel multicast traffic
for subscribers on different VLANs is unnecessary. The IGMP leave and join messages are in the VLAN
to which the subscriber port is assigned. The access layer switch (Switch A) modifies the forwarding
behavior to allow traffic forwarding from the multicast VLAN to the subscriber port in a different
VLAN. This is done by selectively allowing traffic to cross between the two VLANs.
IGMP reports are sent to the same IP multicast group address as the multicast data. The Switch A CPU
must capture all IGMP join and leave messages from the receiver ports and forward them to the multicast
VLAN of the source (uplink) port, based on the MVR mode.
Configuring MVR
These sections include basic MVR configuration information:
• Default MVR Configuration, page 28-23
• MVR Configuration Guidelines and Limitations, page 28-23
• Configuring MVR Global Parameters, page 28-24
• Configuring MVR on Access Ports, page 28-26
• Configuring MVR on a Trunk Port, page 28-27
• Displaying MVR Information, page 28-29
Default MVR Configuration
Note Enabling the MVR command will set all the MVR default parameters.
Table 28-2 shows the default MVR configuration.
MVR Configuration Guidelines and Limitations
Follow these guidelines when configuring MVR:
• Ports can be configured as either a source port or a receiver port.
– Ports connected to subscribers are configured as receiver ports.
Table 28-2 Default MVR Configuration
Feature Default Setting
MVR Disabled globally
Multicast addresses None configured
Query response time 5 (tenths of a second)
Multicast VLAN VLAN 1
Mode Compatible
Interface (per port) default Neither a receiver nor a source port
Immediate Leave Disabled on all ports

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