Extreme Networks ExtremeWare XOS 11.0, Command Reference Manual

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278 ExtremeWare XOS 11.0 Command Reference Guide
FDB Commands
show fdb
show fdb {<mac_addr> | broadcast-mac | permanent | ports <portlist> | vlan
<vlan_name>}
Description
Displays FDB entries.
Syntax Description
Default
All.
Usage Guidelines
Displays FDB entries as specified, or displays all FDB entries.
The show output displays the following information:
mac_addr Specifies a MAC address, using colon-separated bytes, for which FDB entries
should be displayed.
broadcast-mac Specifies the broadcast MAC address. May be used as an alternate to the
colon-separated byte form of the address ff:ff:ff:ff:ff:ff.
permanent Displays all permanent entries, including the ingress and egress QoS profiles.
portlist Displays the entries for one or more ports. May be in the form 1, 2, 3-5, 2:5,
2:6-2:8.
vlan_name Displays the entries for a specific VLAN.
Mac The MAC address that defines the entry.
Vlan The VLAN for the entry.
Age The age of the entry, in seconds (does not appear if the keyword permanent
is specified). The age parameter does not display for the backup MSM.
Use The number of IP FDB entries that use this MAC address as a next hop or
last hop (does not appear if the keyword permanent is specified).
Flags Flags that define the type of entry:
• B - Egress Blackhole
• b - Ingress Blackhole
• d - Dynamic
• s - Static
• p - Permanent
• m - MAC
• l - lockdown MAC
• M - Mirror
• i - an entry also exists in the IP FDB
• x - an entry also exists in the IPX FDB
Port List The ports on which the MAC address has been learned