Multicast Routing Table - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

Configuring Multicast Support with PIM-SM
Overview
(*, G) entry for the
RP tree
Group address
Downstream
interfaces
(S, G) entry for the
SP tree
Unicast source of
the multicasts
11-6
The process for switching from an RP to an SP tree will be described in more
detail in "Switching from an RP to an SP Tree" on page 11-9.

Multicast Routing Table

Just as a unicast routing table has an entry for each unicast destination address
to which the route can forward traffic, a multicast routing table has an entry
for every multicast group for which the router must transit traffic. (The router
determines which groups these are according to the IGMP reports and PIM
join/prunes that it receives.)
An entry in a unicast routing table includes information such as a destination
address and forwarding interface. An entry in a multicast routing table can
include:
a multicast group address and, optionally, a source address
a list of outgoing interfaces
an incoming interface
an RP address
flags such as SPT or RP bits
ProCurve# show ip mroute
IP Multicast Routing Table
Flags: S - Sparse, C - Connected, P - Pruned, J - Join SPT, T - SPT-
bit Set,
F - Register, R - RP-bit Set
Timers: Uptime/Expires
(*, 239.255.255.1), 01:06:23/00:00:00, RP 10.1.1.1, Flags: SCJ
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
eth 0/1, Forward, 00:12:08/00:03:21
fr 1.2, Forward, 00:12:54/00:01:26
fr 1.3, Forward, 00:12:12/00:02:09
(192.168.100.2, 239.255.255.1), 00:12:10/00:03:30, Flags: ST
Incoming interface: fr 1.3, RPF nbr 10.3.3.2
Outgoing interface list:
fr 1.2, Pruned, 00:02:09/00:00:10
Figure 11-1. Multicast Routing Table
A multicast routing table entry, as shown in Figure 11-1, is identified by the
address for the multicast group. It can, optionally, be made specific to a source.
RP address