We have 3 separate 3850 connected to 6807 with fiber
and timers on interfaces are
ip ospf dead-interval 3
ip ospf hello-interval 1
3850-1 have couple times per day
Port-channel1 from FULL to DOWN, Neighbor Down: Dead timer expired
Port-chan...
no errors on interfacesno traffic on switches, just connected to Core.fiber is multy mode and single mode (short distance just other building)Core switches CPU ~20%3850 does not support BFD
3850-1#
000222: Oct 7 20:44:53.933 PDT: %OSPF-5-ADJCHG: Process 20, Nbr 10.1.1.254 on Port-channel2 from FULL to DOWN, Neighbor Down: Dead timer expired
000223: Oct 7 20:44:53.936 PDT: %OSPF-5-ADJCHG: Process 20, Nbr 10.1.1.254 on Port-channel2 fr...
