4.1 static routing
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Static Routing
Teknik Informatika
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StaticRouting
Static routing is the process of an administrator manually adding routes in
each routers routing table. There are benefits and disadvantages to all
routing processes.
Static routing has the following benefits: No overhead on the router CPU
Security (because the administrator only allows routing to certain networks)
Static routing has the following disadvantages:
The administrator must really understand the internetwork and how each router is
connected to configure the routes correctly.
,
routers.
Its not feasible in large networks because it would be a full-time job.
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StaticRouting
The command used to add a static route to a routing table is
ip route[destination_network] [mask][next_hop_address or
exitinterface] [administrative distance][permanent]_
ip route192.168.10.0 255.255.255.0 192.168.20.2
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DescribeStaticRouting
The command used to add a static route to a routing table is
. p rou e e comman use o crea e e s a c rou e.
2. destination networkThe network you are placing in the routingtable.3. maskIndicates the subnet mask being used on the network.
4. next hop addressThe address of the next hop router that will receivethe packet and
orwar o e remo e ne wor . s s a rou er n er ace a s on a rec y
connected network. You must be able to ping the router interface before you add the
route.
5. exit interfaceUsed in place of the next hop address if desired. Must be on a point-to-, u . w ; x ,
Ethernet.
6. administrative distanceBy default, static routes have an administrative distance of
1. You can change the default value by adding an administrative weight at the end of
.7. permanentIf the interface is shut down or the router cannot communicate to the next
hop router, the route is automatically discarded from the routing table. Choosing the
permanent option keeps the entry in the routing table no matter what happens.
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DesignNetwork
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ConfigurationStaticRouting
Static Routing
2621A( Conf i g) #ip route 172.16.30.0 255.255.255.0 172.16.10.22621A( Conf i g) #ip route 172.16.40.0 255.255.255.0 172.16.10.22621A( Conf i g) #ip route 172.16.50.0 255.255.255.0 172.16.10.2
2501A( Conf i g) #ip route 172.16.30.0 255.255.255.0 172.16.20.22501A( Conf i g) #ip route 172.16.40.0 255.255.255.0 172.16.20.2
2501A( Conf i g) #ip route 172.16.50.0 255.255.255.0 172.16.20.2
2501B( Conf i g) #ip route 172.16.10.0 255.255.255.0 172.16.20.12501B( Conf i g) #ip route 172.16.50.0 255.255.255.0 172.16.40.2
2501C( Conf i g) #ip route 172.16.10.0 255.255.255.0 172.16.40.12501C( Conf i g) #ip route 172.16.20.0 255.255.255.0 172.16.40.12501C( Conf i g) #ip route 172.16.30.0 255.255.255.0 172.16.40.1
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DefaultRouting
Default routingis used to send packets with a remote destination network
not in the routing table to the next hop router. You can only use default
routin on stub networks which means that the have onl one exit ort
out of the network.
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DesignNetwork
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Bibliografy
Lammle Todd , CCNA 640-802, (6th Edition). .
http://www.cabrilo.net
SYAIFUL AHDAN, S.KOM2/25/12