Introduction to networking(Yarnfield)

Static routes

Objectives Describe what a static route is Define what administrative distance refers to Describe how to configure a static route

Static routes Static routes are commonly used when routing

from a network to a stub network A stub network is a network that can only be

accessed by one route Routing protocols used in stub networks can

be a waste of resources Therefore static routes are configured for

connectivity to remote networks that are not directly connected to a router

Static route operation Next hop address

Next hop IPaddress

Administrative distance A measure of reliability When there are two or more protocols

showing two or more routes to a destination, the router uses the admin distance to determine which protocol to use

Lower values are more reliable Static routes have a default admin distance of

1 However, a true directly connected route has

an admin distance of 0! To verify the administrative distance use

show ip route address

Configuring static routes

Hoboken must be configured so that it can reach the 172.16.1.0 network and the 172.16.5.0 network. Both of these networks have a subnet mask of 255.255.255.0.

Hoboken(config)#ip route 172.16.1.0 255.255.255.0 s1Hoboken(config)#ip route 172.16.5.0 255.255.255.0 s0

Admin. Distance set to 0as none in specified

Configuring static routes

Admin.distance setto 1

Configuring default route forwarding

Default routes are used to route packets with destinations that do not match any of the other routes in the routing table

Verifying static route configuration

Verifying static route configuration

Troubleshooting static route configuration

Troubleshooting static route configuration

Summary Static and dynamic routing is often used

together Static routes are commonly used with stub

networks i.e. networks with only one way to access them

Administrative distance is a measure of reliability

Questions... ...are there any?