Which two statements are correct about Nonstop Forwarding? (Choose two.)
A.
It allows the standby RP to take control of the device after a hardware or software fault on the
active RP.
B.
It is a Layer 3 function that works with SSO to minimize the amount of time a network is
unavailable to users following a switchover.
C.
It is supported by the implementation of EIGRP, OSPF, RIPv2, and BGP protocols.
D.
It synchronizes startup configuration, startup variables, and running configuration.
E.
The main objective of NSF is to continue forwarding IP packets following a switchover.
F.
Layer 2 802.1w or 802.1s must be used, as 802.1d cannot process the Layer 2 changes.
G.
Routing protocol tuning parameters must be the same as the NSF parameters, or failover will
be inconsistent.
Explanation:
Cisco Nonstop Forwarding (NSF) works with the Stateful Switchover (SSO) feature in Cisco IOS
software. NSF works with SSO to minimize the amount of time a network is unavailable to itsusers following a switchover. The main objective of Cisco NSF is to continue forwarding IP
packets following a Route Processor (RP) switchover.http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fsnsf20s.html