Determining the Data Stream Learned with IP Multicast over Fabric Connect on the VLAN

Use this procedure to determine the data stream learned when IP Multicast over Fabric Connect is configured on the VLAN.

About this task

The following section shows sample output for the show ip mroute route command.

In this table, every stream uses one (*,G) entry and x (S,G) entries, depending on how many servers forward traffic to the same group.

The 0.0.0.0 mask is always tied to a (*,G) entry.

If you do not specify a VRF name or range of VRF IDs, the results display information for the Global Router. If you do specify a VRF name or range of VRF IDs, the results display information only for the VRFs you specify.

Procedure

To enter User EXEC mode, log on to the switch.
Determine the data stream learned:

show ip mroute route[vrf WORD <0–32>] [vrfids <0–255>]

Example

Determine the data stream learned:

Switch:1#show ip mroute route
================================================================================
                                  Mroute Route
================================================================================
GROUP           SOURCE          SRCMASK         UPSTREAM_NBR    IF     EXPIR PROT
--------------------------------------------------------------------------------
233.252.0.119   0.0.0.0         0.0.0.0	        203.0.113.207   v504	 210   pimsm
233.252.0.119   192.0.2.165     255.255.255.0   203.0.113.207   v504   210   pimsm
233.252.0.119   198.51.100.165  255.255.255.0   198.51.100.204  v155   210   pimsm
233.252.0.119   198.51.100.166  255.255.255.0   198.51.100.204  v155   210   pimsm
233.252.0.113   0.0.0.0         0.0.0.0         203.0.113.208   v504   210   pimsm
233.252.0.113   198.51.100.165  255.255.255.0   203.0.113.208   v504   210   pimsm

Variable Definitions

The following table defines parameters for the show ip mroute route command.


Variable	Value
vrf `WORD<0–32>`	Specifies the VRF name.
vrfids `<0–255>`	Specifies the VRF ID.

Job Aid

The following table shows the field descriptions for the show ip mroute route command.


Field	Description
GROUP	Indicates the IP multicast group for which this entry specifies a next hop on an outgoing interface
SOURCE	Indicates the network address that, when combined with the corresponding value of ipMRouteNextHopSourceMask, identifies the sources for which this entry specifies a next hop on an outgoing interface.
SRCMASK	Indicates the network mask, when combined with the corresponding value of ipMRouteNextHopSource, identifies the sources for which this entry specifies a next hop on an outgoing interface.
UPSTREAM_NBR	Indicates the address of the upstream neighbor from which IP datagrams from these sources to this multicast address are received, or 0.0.0.0 if the upstream neighbor is known.
IF	Indicates the value of ifIndex for the interface on which IP datagrams sent by these sources to this multicast address are received. A value of 0 indicates that datagrams are not subject to an incoming interface check, but can be accepted on multiple interfaces (for example, in CBT).
EXPIR	Indicates the minimum amount of time remaining before this entry ages out. The value 0 indicates that the entry is not subject to aging.
PROT	Indicates the outgoing mechanism through which the switch learns this route. For IP Multicast over Fabric Connect, this value is sb-access or spb-network. Spb-access indicates the datastream learned was from the UNI ports. Spb-network indicates that the datastream learned was from the SPBM cloud.