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ip route

17-14 IP Configuration

Usage

RoutesaremanagedbytheRTM(RouteTableManager),andarecontainedintheRIB(Route

InformationBase).Thisdatabasecontainsalltheactivestaticroutes,andalltheRIProutes.

TheRTMselectsuptothreeofthebestroutestoeachnetworkandinstallstheseroutesintheFIB



(ForwardingInformat ion Base).

Example

ThisexampleshowshowtodisplayallIProuteinformation.Inthiscase,thereareroutesdirectly

connectedtoVLANs1and2,twostaticroutesconnectedtoVLAN1(oneindirectly,andonevia

anothernetworkIP),andoneRIProute.Distance/costisdisplayedas[x/y]:

B3(su)->router#show ip route

Codes: C – connected, S – static, R – RIP, * - candidate default, U – per user

static route

C 192.168.27.0/24 [ 0/0001] directly connected, vlan 1

C 192.168.32.0/24 [ 0/0001] directly connected, vlan 2

S 2.0.0.0/8 [ 65/0001] via 192.168.72.1, vlan 1

S 3.0.0.0/8 [ 0/0001] directly connected vlan 1

R 1.0.0.0/8 [ 70/0002] via 192.168.72.22 vlan 1

ip route

UsethiscommandtoaddorremoveastaticIProute.Thenoformofthiscommandremovesthe

staticIProute.

ip route prefix mask dest-addr [distance]

no ip route prefix mask forward-addr

Parameters

Defaults

Ifdistanceisnotspecified,thedefaultvalueof1willbeapplied.

Mode

Globalconfiguration:B3(su)‐>router(Config)#

Example

ThisexampleshowshowtosetIPaddress10.1.2.3asthenexthopgatewaytodestinationaddress

10.0.0.0:

B3(su)->router(Config)#ip route 10.0.0.0 255.0.0.0 10.1.2.3

prefix SpecifiesadestinationIP addressprefix.

mask Specifiesadestinationprefixmask.

dest‐addr Specifiesaforwarding(gateway)IPaddress.

distance (Optional)Specifiesanadministrativedistancemetricforthisroute.Valid

valuesare1(default)to255.Routeswithlowervaluesreceivehigher

preferenceinrouteselection.

Enterasys SecureStack B3 User Manual

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