Specifications

Configuring RADIUS Server Groups
RoamAbout Mobility System Software Configuration Guide 18-7
However,ifthelocaldatabaseisthefirstmethodinthelist,followedbyaRADIUSservergroup,
theRoamAboutswitchrespondstoafailedsearchofthedatabasebysendingarequesttothe
followingRADIUSservergroup.Thisexceptioniscalledlocaloverride.
Formoreinformation,see“AAA
MethodsforIEEE802.1XandWebNetworkAccess”on
page 17‐8.
Configuring Load Balancing
YoucanconfiguretheRoamAboutswitchtodistributeauthenticationrequestsacrossRADI US
serversinaservergroup,whichiscalledloadbalancing.Distributingtheauthenticationprocess
acrossmultipleRADIUSserverssignificantlyreducestheload onindividualserverswhile
increasingresiliencyonasystemwide basis.
Whenyouconfigureloadbalancing,thefirst
client’sRADIUSrequestsaredirectedtothefirst
serverinthegroup,thesecondclient’sRADIUS requestsaredirectedtothesecondserverinthe
group,andsoon.Whenthelastserverinthegroupisreached,thecycleisrepeated.
Toconfigureloadbalancing,usethefollowingcommand:
set server group group-name load-balance enable
Example
Forexample,toconfigureRADIUSserverspelicanand seagullastheservergroupswampbirdswith
loadbalancing:
1. Configurethemembersofaservergroupbytypingthefollowingcommand:
RBT-8100# set server group swampbirds members pelican seagull
success: change accepted.
2. Enableloa dbalancingby typingthefollowingcommand:
RBT-8100# set server group swampbirds load-balance enable
success: change accepted.
Thefollowingcommanddisablesloadbalancingforaservergroup:
clear server group group-name load-balance
Adding Members to a Server Group
ToaddRADIUSserverstoaservergroup,typethefollowingcommand:
set server group group-name members server-name1 [server-name2] [server-name3]
[server-name4]]
ThekeywordmembersliststheRADIUSserverscontainedinthenamedservergroup.Aserver
groupcancontainbetweenoneandfourRADIUSservers.ThiscommandacceptsanyRADIUS
serversasthecurrentsetofservers. Tochangetheservermembers,youmustreenterallofthem.
Note: MSS attempts to send accounting records to one RADIUS server, even if load balancing is
configured.