enable flooding ports
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.
- Disabling multicasting egress flooding does not affect those packets within an IGMP 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 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 switch:
enable flooding unicast port 13-17
History
This command was first available in ExtremeXOS 11.2.
Platform Availability
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, and X695 series switches.