I have 3 routers in my LAN network. R1, R2 and R3.
R2 <> R1 <> R3
At the same time, I have Layer 2 port channel connecting R2 and R3.
I have Vlan 1, 300, 500 and 700 on R2 and R3 routers with HSRP configured
HOwever, when layer 2 link between R2/R3 was down, all the VLANs were down and inaccessable.
Can I know why?