Allied Telesis SwitchBlade x3100 Series - Page 327

Configuring the Forwarding Database Introduction
4-7
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
4.2.9.3 Feature Interactions for Interface Learn Limit and TPID
The SET INTERFACE TPID and SET INTERFACE LEARNLIMIT commands affect this feature.
• The SBx3112 supports a maximum 16K MAC address table size. On a per-port basis, if LEARNLIMIT=OFF
then the port can learn up to the system maximum. If LEARNLIMIT=1..64, then the port can fully support
that limit. This applies both XE4 and GE24 interfaces.
• Unlike legacy iMAP, there is a limited number of TPIDs for a given card -- that can be applied to all card
ports. For the XE4, the limit is 2 different TPIDs. For GE24 cards, the limit is 8 different TPIDs.
4.2.9.4 Configuration Procedure - Dynamically Clearing the FDB
The following procedure demonstrates the behavior of the FDB when MAC addresses are configured to be
dynamically cleared -- using the SET SWITCH MACREMOVALMODE command.
TABLE 4-1 Configuration Procedure for Clear FDB (Dynamically)
Step Command Description/Notes
View current switch settings. The “Age-Only FDB Clear” parameter is “Off” -- indicating the default MAC removal mode
as AGEANDSTATE.
1
show switch
--- Switch Configuration ------------------------------------------------------
Learning.............................. On
Ageing Timer.......................... On
Ageingtimer........................... 300
Age-Only FDB Clear............... Off
Number of SM Ports.................... 196
Number of NM Ports.................... 24
Number of HVLAN....................... 2
Number of Standard VLAN............... 261
Number of UFO VLAN.................... 14
Hash Select .......................... ALL
View contents of the FDB.
2
show switch fdb
--- Switch Forwarding Database ---
Slot VLAN Interface ID MAC Address Status
----------- ----------- --------------- ---------------------- ---------------
0 420 0.0 00:00:CD:0E:B1:F0 Dynamic
0 420 0.0 00:0C:25:00:FC:59 Dynamic
0 2100 0.0 00:0C:25:00:FC:59 Dynamic
0 3511 0.23 00:00:02:00:0B:99 Dynamic
11 512 11.23 00:02:02:00:AB:15 Dynamic
11 512 11.23 00:02:02:00:AB:AF Dynamic
11 512 11.23 00:02:02:00:AC:05 Dynamic
11 512 11.23 00:02:02:00:BC:A7 Dynamic