Term
| what does an etherchannel do? |
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Definition
| it aggregates the bandwidth of multiple physical links. |
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Term
| what is the standard for LACP? |
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Definition
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Term
| when configuring a L2 etherchannel, how can you quickly confirm that the member interfaces are being hidden from the other layers. |
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Definition
| Check the STP topology, the port-channel interface should be referenced, not the members. This should also be the case for the MAC table. |
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Term
| how can a single flow utilise 2Gbps of bandwidth when 2 x 1Gbps interfaces are bundled? |
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Definition
| It can't. A single flow can't exceed the speed of an idividual link as it can't be load-balanced across multiple physical links. |
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Term
| what is the main advantage of using the PAGP/LACP negotiation protocols? |
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Definition
| They may prevent the risk of L2 loops associated with static port-channels. |
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Term
| How will different load-balancing methods, at either end of a port-channel, affect the formation of the port-channel? |
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Definition
| It won't. Load-balancing methods can be different at either end. |
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Term
| command to set etherchannel misconfiguration guard to its default setting. |
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Definition
spanning-tree etherchannel guard misconfig
global command |
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Term
| command to view interfaces that have been disabled by etherchannel misconfig guard. |
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Definition
| show interfaces status err-disabled |
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Term
| for what reasons will etherchannel misconfig guard place an interface in the errdisable state? |
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Definition
1. one end of a link is configured for etherchannel, the other is not.
2. the channel parameters are not matched on either end of the link. |
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Term
| L3 etherchannel order of operations |
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Definition
1. create port-channel as L3
2. configure port-channel.
3. configure interfaces as L3.
4. add interfaces to channel-group. |
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Term
| command to quickly view the status of all configured etherchannels |
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Definition
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Term
| command to view the protocols used to establish all etherchannels |
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Definition
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Term
| if one end of an etherchannel is up, the other end is guaranteed to be up when using what negotiation methods? |
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Definition
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Term
| interface command to prevent negotiation protocol misconfig |
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Definition
| channel-protocol lacp | pagp |
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Term
| command to confirm which internal vlan is being used for a L3 etherchannel |
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Definition
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Term
| command to determine which switch controls the active port negotiation in a standard etherchannel. Also commands to verify. |
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Definition
lacp system-priority
show lacp
show lacp sys-id |
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Term
| command to amend lacp settings, that will determine which ports will be active/standby on a switch. |
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Definition
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Term
| command to determine load-balancing methods of all etherchannels of a switch. |
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Definition
| port-channel load-balance |
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