Cisco Cisco IOS Software Release 12.0(15)S

Timers: Uptime/Expires

Uptime indicates per interface how long in hours, minutes, and 
seconds the entry has been in the IP multicast routing table. Expires 
indicates per interface how long in hours, minutes, and seconds until 
the entry will be removed from the IP multicast routing table.

Interface state:

Indicates the state of the incoming or outgoing interface.

Interface

Indicates the type and number of the interface listed in the incoming 
or outgoing interface list.

Next-Hop or VCD

Next hop specifies the IP address of the downstream neighbor. VCD 
specifies the virtual circuit descriptor number. VCD0 means the 
group is using the static map virtual circuit.

State/Mode

State indicates that packets will either be forwarded, pruned, or null 
on the interface depending on whether there are restrictions due to 
access lists or Time To Live (TTL) threshold. Mode indicates 
whether the interface is operating in dense, sparse, or sparse-dense 
mode.

(*, 224.0.255.1) and 
(198.92.37.100/32, 
224.0.255.1)

Entry in the IP multicast routing table. The entry consists of the IP 
address of the source router followed by the IP address of the 
multicast group. An asterisk (*) in place of the source router indicates 
all sources.

Entries in the first format are referred to as (*, G) or “star comma G” 
entries. Entries in the second format are referred to as (S, G) or “S 
comma G” entries. (*, G) entries are used to build (S, G) entries.

RP

Address of the rendezvous point (RP) router. For routers and access 
servers operating in sparse mode, this address is always 0.0.0.0.

flags:

Information about the entry.

Incoming interface:

Expected interface for a multicast packet from the source. If the 
packet is not received on this interface, it is discarded.

RPF  neighbor  or  RPF  nbr

IP address of the upstream router to the source. “Tunneling” indicates 
that this router is sending data to the RP encapsulated in Register 
packets. The hexadecimal number in parentheses indicates to which 
RP it is registering. Each bit indicates a different RP if multiple RPs 
per group are used.

Dvmrp  or  Mroute

Indicates if the RPF information is obtained from the Distance Vector 
Multicast Routing Protocol (DVMRP) routing table or the static 
mroutes configuration.

Outgoing interface list:

Interfaces through which packets will be forwarded. When the ip pim 
nbma-mode command is enabled on the interface, the IP address of 
the Protocol Independent Multicast (PIM) neighbor is also displayed.

Enables IP multicast routing or multicast distributed switching.

Enables PIM on an interface.

Defines the SSM range of IP multicast addresses.