Module 6
True or False? FastEthernet and GigabitEthernet links can be combined into a single EtherChannel.
False
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
A network administrator is configuring an EtherChannel link between two physical ports on a switch. Which statement describes the result when one of the physical ports fails?
The EtherChannel continues transmitting data with reduced bandwidth
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
Which three are PAgP interface modes? (Choose three.)
on auto desirable
When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?
port channel
Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.)
source IP to destination IP Source MAC to destination MAC
What does EtherChannel technology make possible?
to combine the number of physical links between the switches to increase the overall speed of switch-to-switch communication.
What are three advantages of using EtherChannel technology? (Choose three.)
A spanning tree recalculation is not required when a single link within the channel goes down There is no need to upgrade links to faster connections to increase bandwidth Configuration tasks can be done on the EtherChannel interface
Which function is provided by EtherChannel?
creating one logical link by using multiple physical links between two LAN switches
When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?
desirable
True or False? PAgP and LACP are both Cisco-proprietary link aggregation protocols.
False
Which combinations of PAgP modes will form an EtherChannel? (Choose all that apply.)
auto>desirable on>on
Which two protocols are link aggregation protocols? (Choose two.)
802.3ad PAgP
What is EtherChannel used for?
It is used to provide fault-tolerance, load sharing, increased bandwidth, and redundancy between switches, routers, and servers.
When an EtherChannel trunk is configured, typically _________________ is configured first and then ___________________.
EtherChannel (PAgP or LACP) DTP
A link aggregation technology is needed that allows redundant links between devices that will not be blocked by STP. That technology is known as ______________________
EtherChannel.
Which are benefits of EtherChannel technology? (Choose all that apply.)
Fault-tolerance load sharing increased bandwidth link redundancy
Which PAgP interface mode will initiate negotiation with other interfaces?
desirable
Why is it easy to confuse PAgP or LACP with DTP?
because they are all protocols used to automate behavior on trunk links.
EtherChannel technology was originally developed by Cisco as a __________________ technique of grouping several Fast Ethernet or Gigabit Ethernet ports into one logical channel. When an EtherChannel is configured, the resulting virtual interface is called a ___________________.
LAN switch-to-switch port channel
EtherChannels can be formed through negotiation using one of two protocols? What do these protocols allow?
Port Aggregation Protocol (PAgP) or Link Aggregation Control Protocol (LACP) They allow ports with similar characteristics to form a channel through dynamic negotiation with adjoining switches.
When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?
active
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?
auto
What is EtherChannel?
is a link aggregation technology that groups multiple physical Ethernet links together into one single logical link.
What are PAgP and LACP used for?
link aggregation (EtherChannel).
When a range of ports is being configured for EtherChannel, which mode will configure LACP on a port only if the port receives LACP packets from another device?
passive
Which two mode combinations would result in the successful negotiation of an EtherChannel? (Choose two.)
Desirable; desirable active; passive
Which statement is true about EtherChannel technology?
EtherChannel uses existing switch port
Which three interface parameters must match for an EtherChannel to form? (Choose three.)
allowed VLANS Trunking mode native VLAN
What is DTP is used for?
automating the creation of trunk links.
