Brocade FastIron Ethernet Switch IP Multicast Configuration Guide - Manual (Page 159)

Syntax: clear ip igmp [ vrf vrf-name] traffic
This command clears all the multicast traffic information on all interfaces on the device.
Use the vrf option to clear the traffic information for a VRF instance specified by the vrf-name variable.
T
Displaying IGMP settings
To display global IGMP settings or IGMP settings for a specified VRF. To display global IGMP settings,
enter the following command.
Brocade#show ip igmp settings
IGMP Global Configuration
Query Interval : 125s Configured Interval : 125
Max Response Time : 10s
Group Membership Time : 260s
Operating Version : 2 Configured Version : 0
Robustness Variable : 2
Router Alert Check : Enabled
Last Member Query Interval: 1 Last Member Query Count: 2
Older Host Present Timer : 260
Maximum Group Address : 4096
Syntax: show ip igmp [vrf vrf-name ] settings
The vrf parameter specifies that you want to display IGMP settings information for the VRF specified by
the vrf-name variable.
The report shows the following information:
Output of show ip igmp settings TABLE 25
This field Displays
Query Interval How often the router will query an interface for group membership.
Configured Query
Interval The query interval that has been configured for the router.
Max Response Time The length of time in seconds that the router will wait for an IGMP (V1 or V2) response
from an interface before concluding that the group member on that interface is down and
removing it from the group.
Group Membership
Time The length of time in seconds that a group will remain active on an interface in the
absence of a group report.
Configured Version The IGMP version configured on the router.
Operating Version The IGMP version operating on the router.
Robustness Variable The Robustness Variable allows tuning for the expected packet loss on a network. If a
network is expected to be lossy, the Robustness Variable may be increased. IGMP is
robust to (Robustness Variable -1) packet losses. The Robustness Variable must not be
zero, and should not be one. Default: 2
Router Alert Check IGMP (v2/v3) messages have a router-alert option in the IP header. By default this is
validated by the router and it drops the packets without the router-alert option. If this
check is disabled, IGMP messages without the router-alert option are accepted.
IPv4 Multicast Protocols
FastIron Ethernet Switch IP Multicast Configuration Guide 157
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