IP Multicast Routing Window

This window appears when you choose Device > IP Multicast Routing on the menu bar.

To enable and configure multicast routing on a Catalyst 3550 multilayer switch:

  1. Select a switch from the Host Name list.
  2. Check the Enable Multicast box.
  3. Optional: To tell the switch what RP (rendezvous point) address to use instead of letting Auto-RP supply it dynamically, enter the IP address of an RP in the Static RP IP Address field.
    Note: If PIM is operating in dense mode, a static RP address will not be used.
  4. If you want to change the PIM mode or CGMP status on an interface, select the row of data for the interface on the Multicast Settings tab and click Modify. Then use the Modify Multicast Settings window.
  5. When you have completed the foregoing steps, click OK.

The Multicast Settings tab, PIM Neighbors tab, and Active RPs tab contain information about the switch you are configuring, its enabled neighbors, and the RPs used by active multicast groups. The following topics explain the information on these tabs.

Multicast Settings

This tab contains information about the routable interfaces on the selected switch. The following table explains the columns on the tab.

Column Explanation
Interface
The name of a routable interface on the switch.
Description A text field that describes the interface.
IP Address The IP address of the interface.
PIM Mode The PIM mode of the interface: None, Dense, Sparse, or Sparse-Dense.
CGMP The status of the CGMP server: Enabled or Disabled.

 

PIM Neighbors

This tab contains information about neighboring routers that are enabled for multicast routing. The following table explains the columns on the tab.

Column Explanation
IP Address
The IP address of a routable interface on a neighboring router with multicast routing enabled.
Interface The name of the routable interface.
Uptime How long the switch has know about the neighbor.
Expires How much longer the switch can expect the neighbor to exist.
PIM Mode The PIM mode of the interface: None, Dense, Sparse, or Sparse-Dense.

 

Active RPs

This tab contains information on active RPs. The following table explains the columns on the tab.

Column Explanation
Group IP
The IP address of a multicast group in which the switch participates.
RP IP The IP address of the RP for the group.
PIM Version The version of PIM that the multicast group is using.
Uptime How long the switch has known about the multicast group.
Expires How much longer the switch can expect the group to exist.

For More Information...

"Configure Auto-RP," Configuring IP Multicast Routing