Specifications

Configuring and Managing IP Routes
RoamAbout Mobility System Software Configuration Guide 5-7
Displaying IP Routes
TodisplayIProutes,usethefollowingcommand:
show ip route [destination]
ThedestinationparameterspecifiesadestinationIPaddress.
Examples
TodisplaytheIProutetable,typethefollowingcommand:
RBT-8100# show ip route
Router table for IPv4
Destination/Mask Proto Metric NH-Type Gateway VLAN:Interface
__________________ _______ ______ _______ _______________ _______________
0.0.0.0/ 0 Static 1 Router 10.0.1.17 vlan:1:ip
0.0.0.0/ 0 Static 2 Router 10.0.2.17 vlan:2:ip
10.0.1.1/24 IP 0 Direct vlan:1:ip
10.0.1.1/32 IP 0 Local vlan:1:ip:10.0.1.1/24
10.0.1.255/32 IP 0 Local vlan:1:ip:10.0.1.1/24
10.0.2.1/24 IP 0 Direct vlan:2:ip
10.0.2.1/32 IP 0 Local vlan:2:ip:10.0.1.1/24
10.0.2.255/32 IP 0 Local vlan:2:ip:10.0.1.1/24
224.0.0.0/ 4 IP 0 Local MULTICAST
ThisexampleshowsdynamicroutesaddedbyMSSfortwoVLANinterfaces,10.0.1.1/24on
VLAN1and10.0.2.1/24onVLAN2.
Thisexamplealsoshowstwostaticroutes,whichhaveanext‐hoptype(NH‐Type)valueof
Router.Staticrouteshaveadefaultrouter,listedintheGatewayfield.The
0.0.0.0destination
representsadefaultroute.Here,defaultrouter10.0.1.17isreachablethroughthesubneton
VLAN 1.Route10.0.1.1/24resolvesthestaticroutethatusesthedefaultyrouter.Defaultrouter
10.0.2.17isreachablethroughthesubnetonVLAN 2androute10.0.2.1/24resolvesthestaticroute
tothat gateway.
MSSadds
routeswithnext‐hoptypesDirectandLocalwhenyouaddanIPinterfacetoaVLAN,
whentheVLANisup.Directroutesareforthelocallyattachedsubnetsthattheswitch’sIP
addressesarein.LocalroutesarefordestinationinterfacesconfiguredontheRoamA bou tSwitch
itself.
MSSautomatically
addsthe224.0.0.0routetosupporttheIGMPsnoopingfeature.
IfaVLANisadministrativelydisabledorallofthelinksintheVLANgodownoraredisabled,
MSSremovestheVLAN’sroutesfromtheroutetable.Ifthedirectrouterequiredbyastaticroute
goesdown,MSSchanges
thestaticroutestatetoDown.Iftheroutetablecontainsotherstatic
routestothesamedestination,MSSselectstheresolvedroutethathasthelowestcost.Inthe
followingexample,thedefaultrouteto10.0.1.17isdown,soMSSselectsthedefaultrouteto
10.0.2.17.
RBT-8100# show ip route
Router table for IPv4
Destination/Mask Proto Metric NH-Type Gateway VLAN:Interface
__________________ _______ ______ _______ _______________ _______________