When configuring an EtherChannel bundle, which mode enables LACP only if a LACP device is detected?

A. Passive

B. Desirable

C. On

D. Auto

E. Active






 

Suggested Answer: A

Community Answer: A

The LACP is Link Aggregation Control Protocol. LACP is an open protocol, published under the 802.3ad.
The modes of LACP are active, passive or on. The side configured as ג€passiveג€ will waiting the other side that should an Active for the Etherchannel to be established.
PAgP is Port-Aggregation Protocol. It is Cisco proprietary protocol. The mode are On, Desirable or Auto. Desirable ג€" Auto will establish an EtherChannel.
An example of how to configure an Etherchannel:
SwitchFormula1>enable -
SwitchFormula1#configure terminal
SwitchFormula1(config)# interface range f0/5 -14
SwitchFormula1(config-if-range)# channel-group 13 mode ?
active Enable LACP unconditionally
auto Enable PAgP only if a PAgP device is detected
desirable Enable PAgP unconditionally
on Enable Etherchannel only
passive Enable LACP only if a LACP device is detected

This question is in 200-301 Cisco Certified Network Associate (CCNA) Exam
For getting Cisco Certified Network Associate (CCNA) Certificate





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