12.2(20)EW ENHANCED L3 3DES (OSPF,EIGRP,IS-IS) on two Cat.4506 switches (back-to-back).
In it's default config only vlan 1 is forwarded on a FO 1Gig trunk port between the two systems.
"switchport trunk encap dot1q" doesn't change anything. "Switchport mode trunk" works fine for some seconds.
After that both systems restart...
Is this a bug ?
