HP 3500YL - Manual (Page 75)

PIM-DM (Dense Mode)
Configuring PIM-DM
Syntax: router pim state-refresh < 10 - 300 >
Executed in the PIM context, this command sets the interval
in seconds between successive State Refresh messages orig­
inated by the routing switch. Note that only the routing
switch connected directly to the unicast source initiates
state-refresh packets. All other PIM routers in the network
only propagate these state-refresh packets. (Range: 10 - 300
seconds; Default: 60 seconds)
Syntax: [no] router pim trap < all | neighbor-loss | hardware-mrt-full |
software-mrt-full>
Executed in the PIM context, this command enables and
disables these PIM SNMP traps:
all — Enable/Disable all PIM notification traps.
neighbor-loss — Enable/Disable the notification trap sent
when the timer for a multicast router neighbor expires and
the switch has no other multicast router neighbors on the
same VLAN with a lower IP address. (Default: Disabled.)
hardware-mrt-full — Enable/Disable notification trap when
the hardware multicast routing table (MRT) is full (
2048
active flows). In this state, any additional flows are handled
by the software MRT, which increases processing time for
the affected flows. (Default: Disabled.)
software-mrt-full — Enable/Disable notification trap when
the routing switch’s software multicast routing table is full
(that is, when routing resources for active flows are
exhausted). (Default: Disabled.) Note that in this state, the
routing switch does not accept any additional flows.
Example of Configuring PIM in the Global and PIM Contexts. In fig­
ure 3-2 on page 3-8, the “#1” routing switch is directly connected to the
multicast sources for the network. In this case, suppose that you want to do
the following:
■ Reduce the state-refresh time from the default 60 seconds to 30 seconds.
Note that the routing switch transmits state-refresh packets only if it is
directly connected to the multicast source.
■ Configure an SNMP trap to notify your network management station if the
routing switch’s hardware multicast routing table becomes filled to the
maximum of 2048 active flows.
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