Etherchannel

Question 1

Oversubscription

Answer 1

When the amount of bandwidth coming from access switch is greater than the bandwidth of the distribution switch

Question 2

etherchannel

Answer 2

Grouping multiple interfaces together so its treated as a single interface

Question 3

What are alternative names for etherchannel?

Answer 3

Port channel, Link aggregation group (LAG)

Question 4

How does etherchannel load balance?

Answer 4

frames use the same ‘flow’ (connection between two nodes) from the same interface which determined by different variables that can be configured

Source MAC\IP
Destination MAC\IP
Source and Destination MAC\IP

Question 5

PAgP

Answer 5

Port Aggregation protocol - Cisco proprietary EtherChannel protocol

Question 6

LACP

Answer 6

Link Aggregation Control Protocol - industry standard etherchannel protocol

Question 7

How many interfaces can form a single Etherchannel?

Answer 7

8 interfaces but LACP can have 16 (but only 8 will be active at a time)

Question 8

Which etherchannel protocol uses “active and passive” to form?

Answer 8

LACP

Question 9

Which etherchannel protocol uses “auto and desirable” to form?

Answer 9

PAgP