Flooding Vlan Configuration Menu - Lenovo RackSwitch G8332 Command Reference Manual

Flooding VLAN Configuration Menu

© Copyright Lenovo 2016
The following table describes the Flooding VLAN commands.
Table 256.
Flooding VLAN Menu Options
Command Syntax and Usage
[no] flood
Enables or disables the switch to flood unregistered IP multicast traffic to all
ports.
The default setting is enabled.
Note: If none of the IGMP hosts reside on the VLAN of the streaming server
for a IPMC group, you must enable IGMP flooding to ensure that multicast
data is forwarded across the VLANs for that IPMC group.
Command mode: VLAN
[no] cpu
Enables or disables the switch to forward unregistered IP multicast traffic to
the MP, which adds an entry in the IPMC table, as follows:
If no Mrouter is present, drop subsequent packets with same IPMC.

If a Mrouter is present, forward subsequent packets to the Mrouter(s) on the

ingress VLAN.
The default setting is enabled.
Note: If both flood and cpu are disabled, the switch drops all unregistered
IPMC traffic.
Command mode: VLAN
[no] optflood
Enables or disables optimized flooding. When enabled, optimized flooding
avoids packet loss during the learning period.
The default setting is disabled.
Command mode: VLAN
show vlan <VLAN ID (1‐4094)> information
Displays the current flooding parameters for the selected VLAN.
Command mode: All
Chapter 4: Configuration Commands
497