ETHERCHANNEL INTERVIEW
QUESTIONS & Answers

 

 

 

Q. What is
ETHERCHANNEL?

 

Ans –  Etherchannel
is an aggregation or bundling of multiple physical link into single virtual
link.

 

Q. Benefits of
ETHERCHANNEL?

 

Ans-  it provides more Bandwidth by combining multiple
physical link into single virtual link.

          and Redundancy.

 

Q. What are the
parameters to be same to configure Etherchannel?

 

Ans – Interfaces must configure with       

                   Same Duplex.

                   Same Speed.

                   Same VLAN.

                   Trunk or Access Mode
must be same.

 

Q. How many
interfaces can aggregate or bundle using Etherchannel?

 

Ans- We can aggregate up to 16 interfaces. 8 will be
Active and 8 Will be standby.

 

Q. Etherchannel
is Layer 2 or Layer 3?

 

Ans- Etherchannel is Layer 2 & 3.

 

Q. Number of
types to configure Etherchannel?

 

Manual (Static Etherchannel)

PAgP (Port Aggregation Control Protocol)

LACP (Link Aggregation Control Protocol)

 

 Q. Difference between PAgP and LACP?

 

Ans – PAgP (Port Aggregation Control Protocol) —- Cisco
Proprietary.

         LACP (Link
Aggregation Control Protocol) —- Open Standard.

 

Q. Can we
configure Etherchannel between different devices?

 

Ans – Yes. Between Switch-àServer
& Switch à
Router.

 

Q. Modes used
in PAgP and LACP to form Etherchannel?

 

Ans –  LACP —-
Active & Passive

          PAGP —-
Auto & Desirable.

 

 

Q.
Configuration of Etherchannel?

 

Ans-    # int range
fa0/1-2

            #
channel-group 1 mode <on/auto/desirable/Active/Passive>

 

Q. How
Etherchannel Load Balance the traffic?

  

Ans – Etherchannel use Load Balancing algorithm to send
traffic. based on one of the several criteria listed below.

 

src ip

dst ip.

src-dst-ip

src-mac

dst-mac

src-port

dst-port