"What do you mean: You might confirm that this VLAN isn't seeing a GLBP hello from any other VLAN. I.e., confirm there isn't any possible leakage between VLANs. "
I mean you should verify your topology to insure that VLANs and subnets don't (unexpectedly) share the same wire. Unlikely, but I see you're using secondary addressing which is unusual when you have VLAN support. (I.e. normally would expect your two subnets to be in their own VLANs.)
"And how will I do that? "
Perhaps activate debug for GLBP and see what GLBP packets you're receiving. Confirm they're from the neighbor you expect.
I'm working on a project that includes basic router configurations. I configurated everything including: line console 0, line vty 0 15 and secret passwords. There are 3 routers in the network and every LAN is going t...
Desire to create Terminal Server ("TS" in this document) out of 2811 Cisco Router with HWIC-16A card (with Octal cables)
Desire to use SSH over Telnet
TS is ip'ed, SSH access configured (to the TS)
Python based Script to BULK Import/Delete devices using Cisco Prime API
Check my Repo on GitHub for all the details ( see below link )