Automatic Fast-Leave Igmp - HP ProCurve 6200yl Multicast And Routing Manual

IGMP Function Available With IP Addressing
Configured on the VLAN
Configure IGMP traffic forwarding to normal or
high-priority forwarding.
Age-Out IGMP group addresses when the last
IGMP client on a port in the VLAN leaves the
group.
Support Fast-Leave IGMP and Forced Fast-
Leave IGMP (below).
Support automatic Querier election.
Operate as the Querier.
Available as a backup Querier.
Available
Without IP
Addressing?
Yes
Yes
Yes
No
No
No

Automatic Fast-Leave IGMP

Fast-Leave IGMP. Depending on the switch model, Fast-Leave is enabled or
disabled in the default configuration.
Switch Model Data-
or Series Driven
IGMP
Included?
Switch 6400cl Yes
Switch 6200yl
Switch 5400zl
Switch 5300xl
Switch 4200vl
Switch 3500yl
Switch 3400cl
Switch 2500
Switch 2600 No
Switch 2600-
PWR
Switch 4100gl
Switch 6108
On switches that do not support Data-Driven IGMP, unregistered multicast
groups are flooded to the VLAN rather than pruned. In this scenario, Fast-
Leave IGMP can actually increase the problem of multicast flooding by
removing the IGMP group filter before the Querier has recognized the IGMP
Multimedia Traffic Control with IP Multicast (IGMP)
Operating Differences Without an IP Address
Requires that another IGMP device in the VLAN has an IP
address and can operate as Querier. This can be a multi-
cast router or another switch configured for IGMP oper-
ation. (ProCurve recommends that the VLAN also include
a device operating as a backup Querier in case the device
operating as the primary Querier fails for any reason.
Querier operation not available.
Querier operation not available.
Querier operation not available.
IGMP Fast- Default IGMP Behavior
Leave Setting
Always Drops unjoined mulitcast traffic except for
Enabled always-fowarded traffic toward the Querier or
multicast routers, and out of IGMP-forward
ports. Selectively forwards joined multicast
traffic.
Disabled in IGMP Fast-Leave disabled in the default
the Default configuration. Floods unjoined multicast traffic
Configuration to all ports. Selectively forwards joined
multicast traffic.
How IGMP Operates
None
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