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60-Default Route

Static routing involves manually inputting routing table information by a network administrator, making it suitable for small networks. A default route, also known as the gateway of last resort, is a special type of static route used when no other route is known, directing packets to a specified router. The document includes configuration commands for setting up static and default routes on a router.

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10 views2 pages

60-Default Route

Static routing involves manually inputting routing table information by a network administrator, making it suitable for small networks. A default route, also known as the gateway of last resort, is a special type of static route used when no other route is known, directing packets to a specified router. The document includes configuration commands for setting up static and default routes on a router.

Uploaded by

ep230842
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Configure & Verify Static Routing:

o When routers learn from a Network administrator, it is called a static routing.


o In Static Routing administrator manually inputs all the routing table information.
o Static route tells network devices about exact location & only work in small network.
o In static routing, we must add all network locations manually or statically in router.
o If any change occurs in the network, admin is responsible to update it in all routers.
o Keep in mind, that a static route will have a default administrative distance (AD) of 1.
o To keep route all time in Routing table, permanent keyword to end of route statement.
o This keyword will keep the route in the table even if the router interface goes down.

Default Route:
o A Default Route also known as the gateway of last resort is a special type of static route.
o Default route is route that router uses to forward an incoming packet when no other route.
o This is method where all routers are configured to send all packets towards a single router.
o Where a static route specifies a path, a router should use to reach a specific destination.
o Default route specifies a path router should use if it doesn’t know how to reach destination.
o Default Route is Network Route used by a router when there is no other known route exists.
o Default Route is used by router when there is no other route for IP destination address.
o All the Internet Protocol with unknown destination address are sent to the default route.
o If no default route is set router will discard all packets with destination addresses not found.
o This is very useful method for small networks or for networks with single entry & exit point.
o All zero (0.0.0.0) in network portion and subnet mask represent all networks and all hosts.
o A default route configured by the "IP Route" command is called the default static route.

1 | P a g e Created by Ahmad Ali E-Mail: ahmadalimsc@gmail.com , Mobile: 056 430 3717


Configure & Verify Static Routing
R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.12.2
R1(config)# ip route 0.0.0.0 0.0.0.0 ethernet0/1
R1(config)# ip route 192.168.2.0 255.55.255.0 192.168.12.2
R1(config)# ip route 192.168.2.0 255.55.255.0 ethernet 0/1
R1(config)# ip route 192.168.2.1 255.55.255.255 192.168.12.2
R1(config)# ip route 2.0.0.0 255.0.0.0 192.168.12.2
R1(config)# ip route 2.0.0.0 255.0.0.0 192.168.21.2 5
R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.12.2
R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.21.2 5
R1# show ip route
R1# show ip route connected
R1# show ip route static
R1# show ip route 2.2.2.2
R1# show ip route 192.168.2.0

2 | P a g e Created by Ahmad Ali E-Mail: ahmadalimsc@gmail.com , Mobile: 056 430 3717

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