topic Re: LAG/MLT monitoring on Fabric Engine in ExtremeSwitching (VSP/Fabric Engine)

LAG/MLT monitoring on Fabric Engine

jeronimo — Wed, 11 Jun 2025 16:55:40 GMT

On EXOS this is so easy, just use EXTREME-LACP-MIB (https://mibs.observium.org/mib/EXTREME-LACP-MIB/).

On Fabric engine not so much, I guess you are supposed to use LAG-MIB (https://mibs.observium.org/mib/LAG-MIB/)? However:

1) MLTs composed of NNIs (ISIS links) do not show up at all, and those are the actually important ones. How to monitor those?

2) For frontend ports, how do I find out if a port assigned to the LAG/MLT is still a member? (I have for example seen the case with lower layers like Macsec not working so the port was admin configured for the LAG but operationally not participating).

So how do I check if a post is still operationally member of a LAG for both UNIs and NNIs?

Re: LAG/MLT monitoring on Fabric Engine

jerrygen — Thu, 12 Jun 2025 10:04:56 GMT

Jeronimo, You can monitor LAG membership status using lagIfTable from LAG-MIB for UNIs, but NNIs often require vendor-specific MIBs or CLI-based validation.

Re: LAG/MLT monitoring on Fabric Engine

jeronimo — Thu, 12 Jun 2025 12:39:22 GMT

UNIs: How exactly do I determine oper status from given MIB/OIDs?

NNIs: I don't think CLI is an option in the era of AI 😉 Surely something actually usable (SNMP or some API) must exist.