Configuring Rgmp On The Switch; Configuring Rgmp On The Supervisor Engine - Cisco WS-C6506 Software Manual

Chapter 51 Configuring Multicast Services
•

Configuring RGMP on the Switch

These sections describe the commands for configuring RGMP:
•
•

Configuring RGMP on the Supervisor Engine

These sections describe the commands for configuring RGMP:
•
•
•
•
•
•
•
Default RGMP Configuration
RGMP is disabled by default.
OL-8978-04
The following properties of RGMP are the same as for IGMP snooping:
RGMP constrains the traffic that is based on the multicast group, not on the sender's IP address.
–
If spanning-tree topology changes occur in the network, the state is not flushed as it is with
–
CGMP.
RGMP does not constrain the traffic for multicast groups 224.0.0.x (x = 0...255), which allow
–
use of the PIMv2 bootstrap router (BSR) in an RGMP-controlled network.
RGMP in the Cisco switches operates on the MAC addresses, not on the IP multicast addresses.
–
Because multiple IP multicast addresses can map to one MAC address (see RFC 1112), RGMP
cannot differentiate between the IP multicast groups that might map to a MAC address.
The capability of the switch to constrain the traffic is limited by its content addressable memory
–
(CAM) table capacity.
Configuring RGMP on the Supervisor Engine, page 51-31
Configuring RGMP on the MSFC, page 51-35
Default RGMP Configuration, page 51-31
Enabling and Disabling RGMP, page 51-32
Displaying RGMP Group Information, page 51-32
Displaying RGMP VLAN Statistics, page 51-33
Displaying RGMP-Capable Router Ports, page 51-33
Clearing RGMP Statistics, page 51-34
RGMP-Related CLI Commands, page 51-34
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Configuring RGMP on the Switch
51-31