configure igmp router-alert transmit
Description
Controls whether the router-alert option is set when forwarding IGMPv2 and IGMPv3 packets.
Syntax Description
| vlan | Applies the configuration only to the specified VLAN. If no VLAN is specified, the configuration applies to all VLANs. |
Default
On—The router-alert option is set when forwarding IGMPv2 and IGMPv3 packets.
Usage Guidelines
IETF standards require that a router set the router-alert option in forwarded IGMPv2 and IGMPv3 packets. The ExtremeXOS software has been updated to comply with this requirement using the default settings.
Earlier versions of the ExtremeXOS software forwarded all IGMP packets without setting the router-alertoption. If compatibility issues arise, you can configure the software to use the legacy behavior by using this command with the off option.
Example
The following command configures the switch for IETF compliant IGMP packet processing:
configure igmp router-alert transmit on
History
This command was first available in ExtremeXOS 12.5.3.
Platform Availability
This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the IPv4 multicast feature, see the Switch Engine 32.2 Feature License Requirements document.