As DNS admin it is useful to know how to both view and clear the cache of a Bind server. This can be for a number of reasons but for me its often down to slow DNS lookup, which leads to a sluggish web experience. This is often caused by an issue with the cache,... Continue Reading →
Diff'ing Cisco IOS Startup-config and running-config
How many times have you needed to know what you are about to commit to your startup-config. The following should help you work out if you are storing what you think you are, or at least show you whats changed from your startup config. show archive config differences If there is nothing pending you will... Continue Reading →
Adding / Removing Secondary IP Cisco IOS
There are many reasons to add additional IPs to an interface, you can use the commands below as an example of how to achieve this. en router# configure terminal router(config)#interface gigabitEthernet 0/2 router(config-if)#ip address 10.10.10.10 255.255.255.0 secondary router(config-if)#end To remove it you simply use the 'no' expression. Using the full command you used to add... Continue Reading →
WillowSphere 