HP 3500YL - Manual (Page 156)

PIM-SM (Sparse Mode)
Displaying PIM-SM Data and Configuration Settings
Displaying Current PIM Entries Existing In the Multicast
Routing Table
Syntax: show ip pim mroute
Shows PIM-specific information from the IP multicast
routing table (IP MRT). When invoked without parameters,
lists all PIM entries currently in the router’s IP MRT.
Group Address: Lists the multicast group addresses currently
active on the router.
Source Address: Lists the multicast source address for each
Group Address.
Metric: Indicates the path cost upstream to the multicast
source. Used when multiple multicast routers contend to
determine the best path to the multicast source. The lower the
value, the better the path. This value is set to
0 (zero) for
directly connected routes.
Metric Pref: Used when multiple multicast routers contend to
determine the path to the multicast source. When this value
differs between routers, PIM selects the router with the lowest
value. If
Metric Pref is the same between contending multicast
routers, then PIM selects the router with the lowest Metric
value to provide the path for the specified multicast traffic.
This value is set to
0 (zero) for directly connected routes.
( Metric Pref is based on the IP routing protocol in use: RIP,
OSPF, or static routing. Also, different vendors may assign
different values for this setting.)
This output shows the routing switch is receiving two multicast groups from an upstream
device at 27.27.30.2. The
“ 0 ” metric shows that the routing switch is directly connected to
the multicast source.
ProCurve# show ip pim mroute
PIM IP Multicast Route Entries
Group Address Source Address Metric Metric Pref
---------------- ---------------- ------- -----------
234.43.209.12 100.150.1.0 2 1
235.22.22.12 100.100.25.0 0 1
Figure 4-14. Example Showing a Router Detecting two Multicast Groups from a
Directly Connected Multicast Server
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