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Category: Cisco

 

Router Gateway Redundancy using VRRP

Use the standards based VRRP configuration to provide redundant gateway support on a Cisco network.

Basic Security using Access Lists

Learn the basic usage of Cisco access lists to secure a host on the network.

Create an IOS based DNS server

Create a basic primary dns server using a Cisco router along with a few IOS configuration commands.

Routing protocol selection for your network – OSPF

Learn the basics of OSPF by configuring the routing protocol in a small network environment example.

Vlan Numbering Plan

Need a way to calculate vlan numbers to use based on IP subnet? It is pretty easy when your subnets are always used as full Class C’s. But what if you want to do further subnetting? How do you calculate unique vlan numbers without having to worry about it conflicting with something implemented later.

Routing protocol selection for your network – EIGRP

If you looking to explore routing protocol options for either an existing or new small office network, here is a place to start.

Routing between Vlans using an external router

Configure a Cisco access switch with multiple vlans and use a Cisco 2800 with a single physical Ethernet connection to route between them.

dot1Q trunking between Cisco and 3com SuperStack III switches

This article will walk through the configuration steps of setting up an 802.1q trunk port between a Cisco access switch and a 3com SuperStack III access switch.

Say Goodbye to Vlan1

Stop managing Cisco devices with the default Vlan1. This article will explain why to change this in your network, and how to perform the configuration.

Using the diff utility built into IOS

Using the Cisco built in diff utility show archive config can be a valuable tool where two files need to be compared. Now this can be accomplished directly on the Cisco device instead of transferring the files off to a machine with diff utility installed.