i have problem and wish to help me , i have 2 core 6513 connected with trunk gig port .
suddenly the HSRP changed from standby to active on the standby switch and cause the network to freeze from about 30sec .
after while the HSRP revert back to it's original status , i have check the log and didn't able to define the root cause for the problem .
Attached the log for both of them , and i can share the show-tech if needed .
