We are trying to configure a new subinterface g0/0.1725 on both our routers.
This will allow a few devices to use the 192.168.172.x range
I have configured the subinterfaces on the primary and the failover router.
However they are not passing HSRP information.
Router A is connected to switch A
and Router B is connected to switch B.
Switches A and B are trunked together.
We have 2 vlans configured on the switches. Both are passing HSRP information.
Do I need to configure vlan 1720 so the information will pass on the new subnet
we are trying to configure to pass HSRP?
You need to go config VTp TRANSPARENT mode to config vlan numbers higher than 1005.
So config term
vtp mode transparent
on both switches.
Also, you subnet masks are wrong, 172.20.255.240 is network address, you should use .241 on router 1 and .242 on router 2, also the stanby address is in another subnet completely, this should be somethting like .243.
Without all this, it wont work.