redundancy in core layer

[chpmotry]

hi guys . 

i have a network with below topology. In the core layer, I want to have redundancy, which means that if the main core switch of my network has a problem, the backup switch will automatically enter the circuit. What method is there?

[Georg Pauwen]

Hello,

post the running configs (sh run) of both switches, so we can see what you have currently configured, and make suggestions...

[MHM Cisco World]