Specifications

Managing 802.1X Encryption Keys
RoamAbout Mobility System Software Configuration Guide 19-3
Managing 802.1X Encryption Keys
Bydefault,theRoamAboutSwitchsendsencryptionkeyinformationtoawirelesssupplicant
(client)inanExtensibleAuthenticationProtocoloverLAN(EAPoL)packetafterauthenticationis
successful.Youcandisablethisfeatureorchangethetimeintervalforkeytransmission.
ThesecretWired‐EquivalentPrivacyprotocol(WEP)keysusedbyMSS
onAPsforbroadcast
communicationonaVLANareautomaticallyrotated(rekeyed)ev ery30 minutestomaintain
securepackettransmission.YoucandisableWEPkeyrotationfordebuggingpurposes,orchange
therotationinterval.
Enabling 802.1X Key Transmission
Thefollowingcommandenablesordisablesthetransmissionofkeyinformationtothesupplicant
(client)inEAPoLkeymessages,afterauthentication:
set dot1x key-tx {enable | disable}
Keytransmissionisenabledbydefault.
TheRoamAboutSwitchsendsEAPoLkeymessagesaftersuccessfullyauthenticatingthe
supplicant(client)andreceivingauthorizationattributesfortheclient.Iftheclientisusing
dynamicWEP,theEAPoLKeymessagesaresentimmediatelyafterauthorization.
Example
Thefollowingcommandtoreenableskeytransmission:
RBT-8100# set dot1x key-tx enable
success: dot1x key transmission enabled.
Configuring 802.1X Key Transmission Time Intervals
ThefollowingcommandsetsthenumberofsecondstheRASwaitsbeforeretransmittingan
EAPoLpacketofkeyinformation:
set dot1x tx-period seconds
Thedefaultis5 s econds.Therangefortheretransmissioninterval isfrom1to65,535seconds.
Examples
Typethefollowingcommandtosettheretransmissionintervalto300 seconds:
RBT-8100# set dot1x tx-period 300
success: dot1x tx-period set to 300.
Typethefollowingcommandtoresettheretransmissionintervaltothe5‐seconddefault:
RBT-8100# clear dot1x tx-period
success: change accepted.