01
Front
What is an EtherChannel?
Back
EtherChannel combines physical Ethernet links between the same two devices into one logical port-channel interface.
Free Online Flashcard Deck
4 EtherChannel Free Online FlashCards
Study 4 EtherChannel with 12 free online flashcards. Review key terms, definitions, and concepts with this interactive flashcard deck.
12 cards
02
Front
What settings must Layer 2 trunk members match?
Back
Layer 2 trunk members need compatible settings at both ends, such as speed, duplex, trunk mode, native VLAN, and allowed VLANs.
03
Front
What does LACP active do, and which modes can it pair with?
Back
LACP active starts negotiation and can form a channel with either LACP active or LACP passive.
04
Front
What can `show etherchannel summary` verify?
Back
`show etherchannel summary` helps confirm that the port-channel exists, uses the intended protocol, and has the expected member ports bundled.
05
Front
How does EtherChannel usually assign traffic to member links?
Back
EtherChannel normally hashes selected packet fields, such as source and destination addresses, to assign a flow to a member link; packets in that flow generally stay in order.
06
Front
How does spanning tree treat an EtherChannel bundle?
Back
Switches treat the bundle as one logical link for functions such as spanning tree, rather than treating each member as a separate path.
07
Front
What does the `channel-group` command do?
Back
The `channel-group` command assigns physical interfaces to the logical channel.
08
Front
How does LACP passive behave?
Back
LACP passive responds but does not initiate negotiation. Passive–passive does not form a channel.
09
Front
How do LACP and PAgP differ in standardization?
Back
LACP is standardized by IEEE; PAgP is Cisco-proprietary.
10
Front
What does PAgP desirable do, and which modes can it pair with?
Back
PAgP desirable starts negotiation and can form a channel with desirable or auto.
11
Front
How does PAgP auto behave?
Back
PAgP auto waits for PAgP messages. Auto–auto does not form a channel.
12
Front
What must match when EtherChannel uses `on` mode?
Back
On bundles ports without negotiating a protocol, so both ends must be configured for `on`.
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