Nortel Networks BMD00007 manual Cfg/l3/igmp/adv, Igmp Advanced Configuration

Alteon OS Command Reference

/cfg/l3/igmp/adv

IGMP Advanced Configuration

[IGMP Advanced Menu]

qintrval	- Set IGMP query interval
robust	- Set expected packet loss on subnet
timeout	- Set report timeout
fastlv	- Enable/disable Fastleave processing in VLAN
flood	- Flood unregistered IPMC
cur	- Display current IGMP Advanced configuration

Table 6-87describes the commands used to configure advanced IGMP parameters.

Table 6-90IGMP Advanced Menu Options (/cfg/l3/igmp/adv)

Command Syntax and Usage

qinterval <1-600>

Configures the interval for IGMP Query Reports. The default value is 125 seconds.

robust <2-10>

Configures the IGMP Robustness variable, which allows you to tune the switch for expected packet loss on the subnet. If the subnet is expected to be lossy (high rate of packet loss), increase the value. The default value is 2.

timeout <1-255 seconds>

Configures the timeout value for IGMP Membership Reports (host). Once the timeout value is reached, the switch removes the host from its IGMP table, if the conditions are met. The range is from 1 to 255 seconds. The default is 10 seconds.

fastlv <VLAN number (1-4094)>disableenable

Enables or disables Fastleave processing. Fastleave allows the switch to immediately remove a port from the IGMP port list, if the host sends a Leave message, and the proper conditions are met. This command is disabled by default.

flood enabledisable

Configures the switch to flood unregistered IP multicast reports to all ports. The default setting is enabled.

Note: If IGMP hosts reside on different VLANs, you must disable IGMP flooding to ensure that multicast data is forwarded across the VLANs.

cur

Displays the current IGMP Advanced parameters.

296 „ The Configuration Menu BMD00007, November 2007