Extreme Networks ExtremeWare XOS 11.3, Manual

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Forwarding Database
ExtremeWare XOS 11.3 Concepts Guide
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NOTE
When you disable egress flooding on the BlackDiamond 10K switch, you also turn off broadcasting.
Displaying Learning and Flooding Settings
To display the status of MAC learning and egress flooding, use the following command:
show ports {mgmt | <port_list>} information {detail}
Following is sample output from this command:
QB_Mariner.4 > show port 3:1 info
Port Diag Flags Link Link Num Num Num Jumbo QOS Load
State UPS STP VLAN Proto Size profile Master
================================================================================
3:1 P Em------e-- ready 0 0 1 1 9216
================================================================================
Flags : a - Load Sharing Algorithm address-based, D - Port Disabled,
e - Extreme Discovery Protocol Enabled, E - Port Enabled,
f - Flooding Enabled, g - Egress TOS Enabled, j - Jumbo Frame Enabled,
l - Load Sharing Enabled, m - MACLearning Enabled,
n - Ingress TOS Enabled, o - Dot1p Replacement Enabled,
P - Software redundant port(Primary),
q - Background QOS Monitoring Enabled, R - Software redundant port(Redunda
nt),
s - diffserv Replacement Enabled,
v - Vman Enabled, f - Unicast Flooding Enabled
M - Multicast Flooding Enabled, B - Broadcast Flooding Enabled
NOTE
The BlackDiamond 10K switch has an additional flag:
p - Load Sharing Algorithm, port-based
.
Multicast FDB with Multiport Entry—Summit X450
Switch and BlackDiamond 8800 Chassis Only
Beginning with ExtremeWare XOS version 11.3 on the BlackDiamond 8800 family of switches and the
Summit X450 switch, you can create FDB entries to multicast MAC addresses (that is, 01:00:00:00:00:01)
and list one or more ports. Use the
create fdbentry vlan ports
command to enter the multicast
FDB address. Once traffic with a multicast MAC destination address enters the switch, that traffic is
multicast to all ports on the list.
However, if the MAC address is in the IP multicast range (for example, 01:00:5e:XX:XX:XX), IGMP
snooping rules take precedence over the multicast static FDB entry. Of course, if you disable IGMP
snooping on
all VLANs, the static FDB entry forwards traffic.