On Thu, 18 Jan 2018 11:55:29 +0100 email@example.com wrote:
We updated our installation to 4.8.3 (Real Topology: some C2960 Cisco connected to a pair of Nexus)
NetMap does not work properly (missing some uplinks). We edit IP Device info and, although NAV sees there links as unrecognized and after having added those unrecognized neighbors to NAV. Connections do not appear.
Remote Name (as identified by NAV in unrecognized neighbors) is different from Sysname in the Seed Database (obtained from host file).
Any suggestions? Is it better not to use host file? Does anyone work with Nexus?
a few general questions to get my bearings:
1. You mention upgrading to version 4.8.3. Did the problems appear only after the upgrade? If so, which version did you upgrade from?
2. Do you have a DNS infrastructure, where your network device names are properly maintained?
NAV expects you to maintain a tidy DNS catalog, and does not properly support using host files, AFAIK. If DNS and your devices disagree on what their names are, you may experience problems, especially if NAV needs to resort to name matching for discovery protocol entries.
3. Is LLDP enabled throughout your network? Do you also have CDP enabled? I find it is generally not a good idea to mix the two (and CDP only makes sense in a pure Cisco environment).