CCNA Certification Training: Configuring static routes on a Cisco router

The great thing about CCNA certification training, the skills you learn really useful in working with Cisco routers and switches in production networks. This is mainly for configuring static route. While most networks use dynamic routing protocols like RIP, EIGRP, and OSPF to build routing tables, static routes still come in handy sometimes - especially if a routing protocol configuration goes awry.

Suppose you have just added a newNetwork segment and you've successfully added the network routing tables. Suddenly, on Monday morning, users of this segment did not get to a network resource, such as a mail server, or can not get out to the Internet. We all know how to solve groped for something while the phone is ringing like crazy. This is when we have to do two things ...

1. Resist the temptation to say, the caller: "I would fix it, but I'm too busy to talk to you"

2. Apply a sort of"Quick Fix" that gives you time to examine the problem

Static routes are a very quick way. You can create a static route to the user, where they must be the time to find out what the problem is with the dynamic routing protocol to get. (You must also resist the temptation to apply a static route and declare the problem solved!)

static routes are configured with the command ip route through the destination network and mask below. Then, you must eitherthe next hop IP address or the local exit interface. These two forms are allowed:

ip route 172.10.1.0 255.255.255.0 210.1.1.1

ip route 172.10.1.0 255.255.255.0 Serial0

Help with IOS on a Cisco router shows the different possibilities:

R1 (config) # ip route?

ABCD Destination prefix

Profile to activate the IP routing table profile

Configuring VRF static route for example, VPN forwarding / routing

R1 (config) # ip route 172.10.1.0?

ABCD Destination prefix mask

R1 (config) # ip route 172.10.1.0 255.255.255.0?

ABCD Forwarding router's address

BRI ISDN Basic Rate Interface