6.1.10 Check Your Understanding – EtherChannel Operation Answers

1. Which are benefits of EtherChannel technology? (Choose all that apply.)

  • fault-tolerance
  • load sharing
  • increased bandwidth
  • link redundancy

Explanation: EtherChannel groups multiple physical Ethernet links together into a single logical link and provides the benefits of redundancy, fault-tolerance increase bandwidth, and load sharing.

2. True or False? FastEthernet and GigabitEthernet links can be combined into a single EtherChannel.

  • True
  • False

Explanation: The correct answer is False. The interfaces combined into an EtherChannel must be the same type and speed.

3. True or False? PAgP and LACP are both Cisco-proprietary link aggregation protocols.

  • True
  • False

Explanation: The correct answer is False. PAgP is Cisco-proprietary. LACP is an IEEE 802.3ad specification.

4. Which three are PAgP interface modes? (Choose three.)

  • on
  • auto
  • active
  • passive
  • desirable

Explanation: On, Auto, and Desirable are PAgP modes. On, Active, and Passive are LACP modes.

5. Which PAgP interface mode will initiate negotiation with other interfaces?

  • on
  • desirable
  • auto

Explanation: Only the PAgP Desirable mode initiates negotiations. On and Auto modes do not.

6. Which combinations of PAgP modes will form an EtherChannel? (Choose all that apply.)

  • auto > desirable
  • desirable > on
  • auto > on
  • on > on
  • on > active
  • active > passive

Explanation: On > On and Auto > Desirable will form an EtherChannel.

On > Auto and On > Desirable will not. This is because On mode does not exchange PAgP packets.

Notify of

Inline Feedbacks
View all comments