I have LLDP working on a bunch of Cisco SG300 switches. The discovery.php sees the neighbors correctly but they aren’t being linked for use in maps.
The CDP on these switches weren’t working or were showing the MAC address without colons. “CDP discovery of 701f53ddb1e8 failed - Check name lookup”. So, I disabled CDP on the switches to see if that would help.
Anyone else have this issue? Any thoughts on this?
Hi,
I had nearly the same issues.
Remote were discovered, but not linked.
After the update to 1.40 yesterday all nodes are linked correct.
So just have a look now.
Maybe the update also fixed it on your installation.
Unfortunately the update to 1.40 did not fix it. I’ve done some troubleshooting. I re-enabled CDP after turning on “cdp device-id format hostname”, which fixed the MAC address showing as the host issue. But, the map is broken still. What I’ve determined is that there is an issue with one model of switch that gives problems. I have 1 model SG300 with 2 different port densities, a 52-port and 28-port. The discovery works fine between the 52-port models. Between 2 28-port models, neither direction works. Between a 28-port and 52-port, the 52-port doesn’t correctly link to the 28-port but the 28-port correctly links to the 52-port. The 28-ports seem to be at the core of the issue.
Had the same behavior on my install.
It depend on the node model of it worked correct.
I’m sorry but I was just happy when it worked after the update.
LLDP on the devices is working on all devices in every direction?
I had CDP disabled and I was only using LLDP. It was showing the linking behavior as described, before and after the update to 1.40. I turned on CDP after I discovered the hostname fix. CDP shows the same linking behavior as LLDP. I was hoping CDP would produce different results.
