Chapter 3
The trunk link between two 2960 switches has reached its capacity. How can this be addressed in the most economical way?
Combine physical ports into a high-speed logical link by configuring EtherChannel.
A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode passive. Which command must be used on SW2 to enable this EtherChannel?
channel-group 1 mode active
Refer to the exhibit. An administrator wants to form an EtherChannel between the two switches by using the Port Aggregation Protocol. If switch S1 is configured to be in auto mode, which mode should be configured on S2 to form the EtherChannel?
desirable
When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?
desirable
Which statement describes a characteristic of EtherChannel?
It is made by combining multiple physical links that are seen as one link between two switches.
Which three settings must match in order for switch ports to form an EtherChannel?
Non-trunk ports must belong to the same VLAN. The interfaces must be configured to the same speed. The duplex settings of the switch ports on both sides of the physical link must match.
Which two protocols are used to implement EtherChannel?
Port Aggregation Protocol Link Aggregation Control Protocol
An EtherChannel link using LACP was formed between two switches, S1 and S2. While verifying the configuration, which mode combination could be utilized on both switches?
S1-passive and S2-active
When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?
active
Which three interface parameters must match for an EtherChannel to form?
allowed VLANs native VLAN trunking mode
What are two advantages of using LACP?
allows use of multivendor devices allows automatic formation of EtherChannel links
When a range of ports is being configured for EtherChannel by the use of PAgP, which mode will form the bundled channel only if the port receives PAgP packets from another device?
active
Which command will initiate EtherChannel interface configuration mode?
interface port-channel <int. name>
What will happen if a network administrator puts a port that is part of an EtherChannel bundle into a different VLAN than the other ports in that bundle?
the etherchannel will fail
What are three advantages of using EtherChannel technology?
Configuration tasks can be done on the EtherChannel interface. There is no need to upgrade links to faster connections to increase bandwidth. A spanning tree recalculation is not required when a single link within the channel goes down.
What is a best practice to use before beginning an EtherChannel implementation?
Shut down each of the affected interfaces.
This command shows the list of ports that are involved in the port channel and the time since the ports were bundled
show etherchannel port-channel
Which command displays only one line of information per port channel?
show etherchannel summary
This command shows information about the status of a port that is involved in the etherchannel
show interfaces f0/2 etherchannel
Which two load balancing methods can be implemented with EtherChannel technology?
source MAC to destination MAC source IP to destination IP
Which PAgP mode combination will establish an EtherChannel?
switch 1 set to desirable; switch 2 set to desirable.
Which statement is true about EtherChannel technology?
EtherChannel uses existing switch ports.
Which two protocols are link aggregation protocols?
802.3ad PagP
Refer to the exhibit. An administrator tried to implement an EtherChannel between two switches by grouping the six physical ports as shown. However, the administrator was not successful. What is the reason for that?
An EtherChannel link can only be formed by grouping interfaces of the same type.
