Which desing tecnology allows two cisco catalyst chassis to use SSO and NSF to provide nonstop communication even if one of the menber chasis fails?
A . Auto chassis detect
B . VSS
C . VPc
D . Peer Gateway
Answer: B
Explanation:
A VSS operates with stateful switchover (SSO) redundancy if it meets the following requirements:
– Both supervisor engines must be running the same software version.
– VSL-related configuration in the two chassis must match.
– PFC mode must match.
– SSO and nonstop forwarding (NSF) must be configured on each chassis.