Configuring Mld Fast Leave Processing - 3Com S7906E Configuration Manual

To do...
Configure the startup query
count
Configure the MLD query
interval
Configure the MLD querier
robustness variable
Configure the maximum
response delay for MLD
general query messages
Configure the MLD last listener
query interval
Configure the MLD other
querier present interval
If not statically configured, the startup query interval is 1/4 of the "MLD query interval". By default,
the MLD query interval is 125 seconds, so the startup query interval = 125 / 4 = 31.25 (seconds).
If not statically configured, the startup query count is set to the MLD querier robustness variable. By
default, the MLD querier robustness variable is 2, so the startup query count is also 2.
If not statically configured, the other querier present interval is determined by the formula: Other
querier present interval (in seconds) = [ MLD query interval ] times [ MLD querier robustness
variable ] plus [ maximum response delay for MLD general query ] divided by two. The default
values of these three parameters are 125, 2, and 10 respectively, so the other querier present
interval = 125 x 2 + 10 / 2 = 255 (seconds).
If statically configured, the startup query interval, the startup query count, and the other querier
present interval take the configured values.
Make sure that the other querier present interval is greater than the MLD query interval; otherwise
the MLD querier may frequently change.
Make sure that the MLD query interval is greater than the maximum response delay for MLD
general queries; otherwise, multicast group members may be wrongly removed.

Configuring MLD Fast Leave Processing

MLD fast leave processing is implemented by MLD Snooping. For details, refer to MLD Snooping
Configuration in the IP Multicast Volume.
Use the command...
mld startup-query-count
value
mld timer query interval
mld robust-count
robust-value
mld max-response-time
interval
mld
last-listener-query-interval
interval
mld timer
other-querier-present interval
1-17
Remarks
Optional
For the system default, see
"Note" below.
Optional
125 seconds by default.
Optional
2 times by default
Optional
10 seconds by default
Optional
1 second by default
Optional
For the system default, see
"Note" below.