Specifications

configure igmp snooping flood-list
ExtremeWare XOS 10.1 Command Reference Guide 691
configure igmp snooping flood-list
configure igmp snooping flood-list [<policy> | none]
Description
Configures certain multicast addresses to be slow path flooded within the VLAN.
Syntax Description
Default
None.
Usage Guidelines
With this command, a user can configure certain multicast addresses to be slow path flooded within the
VLAN, which otherwise will be fast path forwarded according to IGMP and/or layer 3 multicast
protocol.
A policy file is a text file with the extension, .pol. It can be created or edited with any text editor. The
specified policy file
<policy file> should contain a list of addresses which will determine if certain
multicast streams are to be treated specially. Typically, if the switch receives a stream with a destination
address which is in the
<policy file> in ’permit’ mode, that stream will be software flooded and no
hardware entry would be installed.
NOTE
There is no CLI command in EXOS to create or edit a policy file. Therefore, you should first create and
edit the policy file using an external editor, then download the file to the switch using tftp command. In
CLI command, *.pol" extension is not needed to be specified for <policy file>.
When adding an IP address into the policy file, a 32-bit host address is recommended.
This feature is meant to solve the multicast connectivity problem for unknown destination addresses
within system reserved ranges. Specifically this feature was introduced to solve the problem of
recognizing certain stream as control packets.
To create a policy file for the snooping flood-list, use the following template:
#
# This is a template for IGMP Snooping Flood-list Policy File
# Add your group addresses between "Start" and "End"
# Do not touch rest of file!!!!
entry igmpFlood {
if match any {
#------------------ Start of group addresses ------------------
nlri 234.1.1.1/32;
policy Specifies a policy file with a list of multicast addresses to be handled.
none Specifies no policy file is to be used.