Network Discovery

[Bashiraad]

Hi,

I have recently started a job and the network is small.

What would be the easiest and best way to discover all routers, switches and aironets?

I am only asking as there is no documentation and the compmany who set it up are not contactable.

I trialed lan surveyour which is good, but some nodes did not have any details

Does any one know of any other tools, especially for the aironets.

Thanks

 

[burtsbees]

Yes---log into a Cisco device, and hopefully you have CDP enabled.
router>en
router#sh cdp nei det
show cdp neighbors detail will do the trick---it will show stats, including IP addresses, IOS version, and incoming interface of all directly connected Cisco devices. It is a general rule of thumb that you should not have CDP enabled on edge devices (facing the WAN)---disable by getting into the config of the interface. For example, let's say Dialer 0 is the interface facing the WAN...
router>en
router#conf t
router(config)#int di0
router(config-if)#no cdp enable
router(config-if)#^z (which is ctrl-z)
router#
Like that...does this help?

 

[burtsbees]

By the way, CDP is enabled by default, so unless the company that set up the routers turned it off, you should be good to go. Also,this will only show directly connected CISCO devices---nothing else---CDP is Cisco Discovery Protocol---Cisco proprietary.

Burt

 

[Bashiraad]

Thanks,

I will give it a shot.