Which statement about the use of PagP link aggregation on a Cisco switch that is running Cisco IOS Software is true?
A.
PagP modes are off, auto, desirable, and on. Only the combinations auto-desirable, desirable- desirable, and on-on allow the formation of a channel.
B.
PagP modes are active, desirable, and on. Only the combinations active-desirable, desirable- desirable, and on-on allow the formation of a channel.
C.
PagP modes are active, desirable, and on. Only the combinations active-active, desirable- desirable, and on-on allow the formation of a channel.
D.
PagP modes are off, active, desirable, and on. Only the combinations auto-auto, desirable- desirable, and on-on allow the formation of a channel.
Explanation:
PagP modes are off, auto, desirable, and on. Only the combinations auto-desirable, desirable- desirable, and on-on will allow a channel to be formed.
The PagP modes are explained below.Only the combinations of auto-desirable, desirable-desirable, and on-on will allow a channel to be formed. If a device on one side of the channel does not support
PagP, such as a router, the device on the other side must have PagP set to on.
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-2900-xl-series- switches/21041-131.html