Which command set must be applied to the NewYork switch to resolve the issue?

Refer to the Exhibit.

Communication between London and New York is down.

Which command set must be applied to the NewYork switch to resolve the issue?
A . NewYork(config)#no interface po1
NewYork(config)#interface range fa0/1-2
NewYork(config-if)#channel-group 1 mode negotiate
NewYork(config-if)#end
NewYork#
B . NewYork(config)#no interface po1
NewYork(config)#interface range fa0/1-2
NewYork(config-if)#channel-group 1 mode on
NewYork(config-if)#end
NewYork#
C . NewYork(config)#no interface po1
NewYork(config)#interface range fa0/1-2
NewYork(config-if)#channel-group 1 mode auto
NewYork(config-if)#end
NewYork#
D . NewYork(config)#no interface po1
NewYork(config)#interface range fa0/1-2
NewYork(config-if)#channel-group 1 mode passive
NewYork(config-if)#end
NewYork#

View Answer

Answer: C

Explanation:

The commands shown in Option C are the appropriate ones to resolve the connectivity issue. The command no interface po1 disables the port-channel interface, which might be causing a conflict or misconfiguration. The interface range fa0/1-2 command selects the range of interfaces to be configured next. The channel-group 1 mode passive command adds these interfaces to an EtherChannel group in passive mode, which waits for LACP packets from another LACP-enabled device before forming an EtherChannel link. Finally, the end command exits the configuration mode.

References: = This answer is based on the knowledge from the Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) course