enable flooding ports
enable flooding [all_cast | broadcast | multicast | unicast] ports [port_list | all]
Description
Enables egress flooding on one or more ports. You can further identify
the type of packets to flood on the specified ports.
Syntax Description
all_cast
|
Specifies enabling egress
flooding for all packets on specified ports. |
broadcast
|
Specifies enabling egress
flooding only for broadcast packets. |
multicast
|
Specifies enabling egress
flooding only for multicast packets. |
unicast
|
Specifies enabling egress
flooding only for unknown unicast packets. |
port_list
|
Specifies one or more ports or
slots and ports. |
all
|
Specifies all ports on the
switch. |
Default
Enabled for all
packet types.
Usage Guidelines
Use this command to re-enable egress flooding that you previously
disabled using the disable flooding ports command.
The following guidelines apply to enabling and disabling egress
flooding:
- Disabling multicasting egress flooding does not affect
those packets within an IGMP (Internet Group Management Protocol) membership group
at all; those packets are still forwarded out. If IGMP snooping is disabled,
multicast packets are not flooded.
- Egress flooding can be disabled on ports that are in a
load-sharing group. If that is the situation, the ports in the group take on
the egress flooding state of the master port; each member port of the
load-sharing group has the same state as the master port.
- FDB (forwarding database) learning is independent
of egress flooding. FDB learning and egress flooding can be enabled or
disabled independently.
- Disabling unicast or all egress flooding to a port also
stops packets with unknown MAC addresses to be flooded to that port.
- Disabling broadcast or all egress flooding to a port
also stops broadcast packets to be flooded to that port.
You can disable egress flooding for unicast, multicast, or
broadcast MAC addresses, as well as for all packets on the ports. The default
behavior is enabled egress flooding for all packet types.
Example
The following command
enables unicast flooding on ports 13-17 on a Summit series switch:
enable flooding unicast port 13-17
History
This command was
first available in ExtremeXOS 11.2.