Re: [Netdisco] Netdisco not detecting LLDP neighbours

[Ingen S. J. v. (ICTS) <j.v...@ut...>]

Hi Andreas,

> I downloaded the VMware image of netdisco to evaluate the software.
> The discovery process does only detect cdp neighbors, not LLDP. The
> switches discover their LLDP neighbors, as you can see them from
> within the switches.
>  
> The network consists of Cisco 3560, hp switches and h3c switches. Any
> ideas?

Well, I'd expect the HP and H3C switches to see each other and both of
those to see the Cat3560's, but I'm not sure whether the Cat3560's will
show LLDP neighbors in Netdisco.

Some Catalyst switches support LLDP (sending & receiving packets,
ability to show neighbors on CLI) but don't implement the LLDP-MIB; in
that case, Netdisco can't get the info about LLDP neighbors.

If the discovery process starts at a Cisco (or hits a Cisco) with HP or
H3C switches behind it, it will not find them when the Cisco only
returns CDP neighbors but not LLDP neighbors via SNMP.


Regards,

Jeroen van Ingen
ICT Service Centre
University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands