This happened on a 5596UP running 5.1(3)N1(1a)
If you have a config like this:
port-profile type ethernet iSCSI
switchport mode access
spanning-tree port type edge trunk
spanning-tree bpduguard enable
switchport access vlan 9
state enabled
port-profile type port-channel Converged
switchport mode trunk
switchport trunk allowed vlan 4-5, 11
switchport trunk native vlan 1000
spanning-tree port type edge trunk
spanning-tree bpduguard enable
state enabled
interface port-channel17
inherit port-profile Converged
speed 10000
vpc 17
interface Ethernet1/17
switchport mode trunk
switchport trunk native vlan 1000
switchport trunk allowed vlan 4-5,11
channel-group 17 mode active
Whatever you do, DO NOT DO THIS:
Nexus5K# en
Nexus5K# conf t
Enter configuration commands, one per line. End with CNTL/Z.
Nexus5K(config)# int e1/17
Nexus5K(config-if)# inherit port-profile iSCSI
Upon trying to apply the new port profile before either removing the old one, or removing the phsycial interface from the port-channel the management session locked up, and after about 5 minutes a message came up saying the port profile manager process had crashed, and then the "System is going down for REBOOT now!" message.
TAC came back and said I'd hit this bug, but with a trigger not mentioned.
Good times...