Cisco SDM – Default Route


This tutorial describes how to configure a default static route on a Cisco router using the Cisco SDM software. This post includes the Step-by-Step process to create a default route, and it will show you how to test your configuration. This article is designed for CCNA students, network engineers, and anyone looking to configure static IP routing using Cisco SDM (Cisco SDM is part of the CCNA syllabus).
The Default route is used on routers, which we do not want them carry detailed routing information about the network. For example, a router of branch office, a home router, etc…
The default route has the IP address 0.0.0.0 and a subnet mask of /0.

Configuring a default route is an easy task; just follow these steps in order to configure a default route using Cisco SDM:


Step 1: Open Cisco SDM.
Step 2: Click Configure.
Step 3: In the Tasks bar, click Routing.
Step 4: In the Static Routing area, click Add in order to open the Add IP Static Route dialog box.
Step 5: Click Make this as default route.
Step 6: In the Forwarding area, enter the Next hop information (interface/IP address).
Step 7: In the Optional area, enter the route’s metric. Additionally, click Permanent Router in order to prevent removing the route from the routing table if the interface connecting the router to the next hop router shuts down.
Step 8: Click Ok.

The following video will teach the exact steps to configure a default route, and it will show you how to test your configuration.

Cisco SDM - Configuraing Static Default Route

This video supposes that routers R1 and R2 are configured according the network diagram above and R1 is allowing Cisco SDM to manage its configurations.

This video is based on the Cisco 3725 router with Cisco IOS software 12.4, and Cisco SDM version 2.5. The IP addressing schemes used in this video are designed to simulate a branch office network connected to a Central office network.

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