EtherChannel

Question 1

How does EtherChannel logically bundle links together into a _____ port

Answer 1

virtual

Question 2

What are the two EtherChannel protocols?

Answer 2

PagP

LACP

Question 3

You have just configured two EtherChannels between two switches. Each EtherChannel contains four physical links. How will STP react?

Answer 3

It will block on entire link

Question 4

What mode manually places the interface in an EtherChannel without any negotiation?

Answer 4

on

Question 5

If one side of an EtherChannel is set to “on” will it work the other side of the EtherChannel is set to “dynamic” or “auto”

Answer 5

No. Both must be set to “on”

Question 6

What is the primary purpose of LACP?

Answer 6

to enable switchports with similar characteristics to form an EtherChannel through dynamic negotiation with adjoining switches

Question 7

If one EtherChannel link is created between two switches that has four physical links, what will STP do?

Answer 7

Will not block any of them

Question 8

What is the primary purpose of EtherChannel?

Answer 8

To provide additional bandwidth without the expense of link upgrades

Question 9

What are the PagP modes?

Answer 9

auto, dynamic, on

Question 10

What are the LACP modes?

Answer 10

active passive, on

Question 11

Which EtherChannel mode is Cisco proprietary?

Answer 11

PagP

Question 12

To form an EtherChannel, it is mandatory that all ports have the same what?

Answer 12

speed

duplex

VLAN information

STP version and settings

Question 13

What is the maximum interfaces for an EtherChannel?

Answer 13

8

Question 14

What command creates an EtherChannel?

Answer 14

channel-group 1 mode [active/passive/dynamic/auto]

Question 15

What command allows you to enter the interface configuration mode of a created EtherChannel

Answer 15

interface port-channel 1

Question 16

What command displays the general status of the EtherChannel interface?

Answer 16

show interface port-channel 1

Question 17

When several port channel interfaces are configured on the same device, what command displays one line of information per port channel?

Answer 17

show etherchannel summary

Question 18

What command displays information about the specific port channel interface

Answer 18

show etherchannel port-channel

Question 19

What command displays the amount of time that has lapsed since the last physical interface was added to an EtherChannel bundle?

Answer 19

show ether channel 1 port-channel

Question 20

What command displays load balancing information about the port channel?

Answer 20

show etherchannel 1 load-balance

Question 21

By default, EtherChannel will load balance based on what?

Answer 21

source MAC address

Question 22

What command displays a short summary of EtherChannel information?

Answer 22

show etherchannel brief

Question 23

Which information is provided by the Load Value?

the percentage of use of the link

the percentage of the link

the session count of the link

the number source-destination pairs on the link

Answer 23

the number source-destination pairs on the link

Question 25

Refer to the exhibit. While troubleshooting a switch, you executed the show interface port-channel 1 etherchannel command and it returned this output. Which information is provided by the Load value?

A. the percentage of use of the link
B. the preference of the link
C. the session count of the link
D. the number source-destination pairs on the link

Answer 25

D. the number source-destination pairs on the link

Question 26

What are two load-balancing methods in the EtherChannel technology? (Choose two)

A. Combination of source port and IP to destination port and IP

B. Source IP to destination IP

C. Source port to destination port

D. Combination of source MAC and IP to destination MAC and IP

E. Source MAC to destination MAC

Answer 26

B. Source IP to destination IP

E. Source MAC to destination MAC