Dell FCX624-I Laptop User Manual


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730 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Changing global IP multicast parameters
25
NOTE
The number of interface groups you can configure for DVMRP and PIM is unlimited; therefore, the
system-max dvmrp-max-int-group and the system-max pim-max-int-group commands that define
their maximum table sizes have been removed.
The software allocates memory globally for each group, and also allocates memory separately for
each interface IGMP membership in a multicast group. An interface becomes a member of a
multicast group when the interface receives an IGMP group membership report. For example, if the
Layer 3 Switch learns about one multicast group, global memory for one group is used. In addition,
if three interfaces on the device receive IGMP group membership reports for the group, interface
memory for three IGMP memberships also is used.
Since the same group can use multiple allocations of memory (one for the group itself and one for
each interface membership in the group), you can increase the maximum number of IGMP
memberships, up to 8192.
NOTE
The total for IGMP memberships applies to the device, not to individual interfaces. You can have up
to 8192 IGMP memberships on all the individual interfaces, not up to 8192 IGMP memberships on
each interface.
Increasing the number of IGMP memberships
To increase the number of IGMP membership interfaces for PIM, enter commands such as the
following.
PowerConnect(config)#system-max pim-max-int-group 4000
PowerConnect(config)#write memory
This command enables the device to have up to 4000 IGMP memberships for PIM.
NOTE
The system-max pim-max-int-group command is no longer available since you can configure an
unlimited number of PIM interface groups for DVMRP.
Syntax: [no] system-max pim-max-int-group <num>
The <num> parameter specifies the maximum number of IGMP memberships for PIM, and can be
from 256 – 8192.
To increase the number of IGMP memberships interfaces you can have for DVMRP, enter
commands such as the following.
PowerConnect(config)#system-max dvmrp-max-int-group 3000
PowerConnect(config)#write memory
NOTE
The system-max dvmrp-max-int-group command is no longer available since you can configure an
unlimited number of DVMRP interface groups.
Syntax: [no] system-max dvmrp-max-int-group <num>
The <num> parameter specifies the maximum number of IGMP memberships for DVMRP, and can
be from 256 – 8192.