Specifications

Managing the Layer 2 Forwarding Database
RoamAbout Mobility System Software Configuration Guide 4-23
Removing Entries from the Forwarding Database
Toremoveanentryfromtheforwardingdatabase,usethefollowingcommand:
clear fdb {perm | static | dynamic | port port-list} [vlan vlan-id] [tag tag-
value]
Examples
ToclearalldynamicforwardingdatabaseentriesthatmatchallVLANs,typethefollowing
command:
RBT-8100# clear fdb dynamic
success: change accepted.
Toclearalldynamicforwardingdatabaseentriesthatmatchports1,typethefollowingcommand:
RBT-8100# clear fdb port 1
success: change accepted.
Configuring the Aging Timeout Period
Theagingtimeoutperiodspecifieshowlongadynamicentrycanremainunusedbeforethe
softwareremovestheentryfromthedatabase.
YoucanchangetheagingtimeoutperiodonanindividualVLANbasis.Youcanchangethe
timeoutperiodtoavaluefrom0through1,000,000seconds.Thedefaultaging
timeoutperiodis
300seconds(5minutes).Ifyouchange thetimeoutperiodto0,agingisdisabled.
Displaying the Aging Timeout Period
Todisplaythecurrentsettingoftheagingtimeoutperiod,usethefollowingcommand:
show fdb agingtime [vlan vlan-id]
Example
TodisplaytheagingtimeoutperiodforallconfiguredVLANs,typethefollowingcommand:
RBT-8100# show fdb agingtime
VLAN 2 aging time = 300 sec
VLAN 1 aging time = 300 sec
Changing the Aging Timeout Period
Tochangetheagingtimeoutperiod,usethefollowingcommand:
set fdb agingtime vlan-id age seconds
Example
TosettheagingtimeoutperiodforVLAN2to600seconds,typethefollowingcommand:
RBT-8100# set fdb agingtime 2 age 600
success: change accepted.