No CDP Neighbours on Cisco 4500

[hertshealth]

Hi

wonder if anyone can assist me.

I have a Cisco 4500 unit running IOS cat4500-entservicesk9-mz.122-54.SG.bin.

Recently the box has stopped showing any cdp neighbours. All i get is this:

CH-4507-01#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
                  D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
CH-4507-01#

CDP is enabled globally and on all interfaces.

I have no crashfile to look at. Also, when i reboot the box, i am then able to see all the devices connected to it and this could be fine for awhile till one day it happens again.

Any ideas???

Marco

[Giuseppe Larosa]

Hello Marco,

this looks like a software bug, it is like the CDP process crashes after some time (one day)

I would try to load a different IOS image newer or older

Hope to help

Giuseppe

[hertshealth]

Hi jo

that is what i thought.

I had this IOS cat4500-entservicesk9-mz.122-53.SG.bin before i upgraded it to cat4500-entservicesk9-mz.122-54.SG.bin ass i noticed the problem started with 12.2(53) IOS but moving to 12.2(54) it doesnt seem to have worked

Marco

[johnlloyd_13]

hi marco,

how bout the remote device? is cdp enabled?

[hertshealth]

Johnlloyd

the remote devices seem to be fine with CDP working fine.

They show CDP neighbours as well as seeing the Cisco 4500 unit.

Marco

[johnlloyd_13]

hi marco,

so it seems the issue lies on your C4500 switch. kindly follow what Giuseppe has suggested above and verify again.

[sdheer]

Hi,

You can also try " debug cdp " to analyze further .

Regards,

Swati

[hertshealth]

Thanks

i will try that out and see what it reports.