Finding unmanaged switches

[nnnnnnnnnn]

I have allot of facilities most with large networks. I am trying to find a good way to identify unmanaged switches connected switch ports. I know I can scan through the cam\mac table but we are talking big numbers of multiple member 3750 stacks. anything intrusive is just not an option at this point. a tcl script is really what I am leaning towards but I am hoping there is a show unmanaged switch command that i don't know about. or if someone knows of a good source for tcl scripts of this type.

cheers

 

[BuckWeet]

If its a truly unmanaged switch.. meaning like a netgear or something.. They won't even have mac addresses associated with them.. really not much you can do to track them down..


The best thing you could do is look at the cam tables.. Anything with more than 1 or 2 MAC associated with the ports would most likley mean a switch is connected downstream..


BuckWeet

 

[nnnnnnnnnn]

yes, I am trying to find rouge unmanaged devices like netgear or whatever. But I am trying to avoid the manual task of looking through all of the switches. I was really hoping 3750's support TCL, IOS routers do and IOS 6k does but it looks like only the 3750-E supports TCL and of course I have plain old 3750s. The idea behind the TCL script would have been execute show cdp neighbor parse for local interface connections. Than run show mac-address-table dynamic exclude local interface connections than parse for duplicates. So I am not sure where to turn now, this no tcl support is lame. and suggestions with a different/better approach?

cheers

 

[ifoam]

Maybe setting up port-security would help you find them. It's work, but at least you can do a range. Plus, it's always good to have it.