The FDB system allows the user to view the fdb or forwarding database. This involves the Layer 2 (Ethernet MAC) and Layer 3 (IP) learned information.

System Forwarding Data Base (FDB)
| Attribute | Value | Comment |
| Phys address | N/A |
Displays IP Address for this sub-string. Field length is limited to xx characters. Example:172.25.123.45 Note: There can be up to 4 IP address bindings per MAC address and is displayed a1s 4 entries. The IP address may be blank if no binding is learned by the system. |
| VLAV ID | String | Represents the VLAN identifier. Values range from 2 through 4094, with 10 VLANs reserved for internal use. |
| AID |
String |
Displays the access identifier (AID) of the port. Example: Net 3. |
| Age | String | Shows the age of the MAC address. |
| Address | String | Shows the MAC address of the device associated with the port. |
| MAC | true | false | Shows whether there is a Sticky MAC associated with the MAC Address (true/false). Note: If there is a Sticky MAC, it dynamically associates the mac-address to the respective port. |
| Time | String | Indicates the amount of time that DHCP snooping is allowed when DAI (FP 30.0 NE and later) is used. |
The fdb l2 command gives all the learned MAC entries in the system.
MDS1-ESUA# show tolt system fdb l2 <enter>
VLAN
PHYS ADDRESS ID AID AGE
------------------------------------
D8:9E:F3:B7:CD:A2 103 NET3 0
MDS1-ESUA# _
|
The fdb L3 command gives all the learned IP addresses that were learned during DHCP snooping. DHCP snooping is only performed if DAI is enabled.
MDS1-ESUA# show tolt system fdb l3 <enter>
VLAN
PHYS ADDRESS ID AID AGE ADRESSES MAC TIME
-------------------------------------------------------------
D8:9E:F3:B7:CD:A2 103 NET3 0 - false 0
MDS1-ESUA# _
|