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New Member

EtherChannel activation

<p>I created an EtherChannel group 1. I can see both interfaces with the "show etherchannel 1 summary" but both interfaces appear with a (D) instead of (P). I have the same configuration on both switches. I am using ports Fa 0/1 and 0/8. Any hint to why they are not in (P)?</p>

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: EtherChannel activation

if you wish to test failover with your etherchannel you can do the following which will maybe show you visually the changes that happen.

Switch A port 1 X Switch B Port 1

Switch A port 8 - Switch B Port 8

manually shut down interface FA0/1 on Switch A which will bring down the interfaces ur seeing with (Pd) - this will move the default channel to the second link you have in your etherchannel. issue the show etherchannel summary command .. bring the first link buack up be re-enabling FA0/1 on switch A and the default should still be listed on the second link.

Hope this helps a little .. perhaps reading up on etherchannel will give u a greater understanding as well as to how this works and the benefits.

9 REPLIES
Silver

Re: EtherChannel activation

D means down

are your ports connected and up?

New Member

Re: EtherChannel activation

are you using the right cabling for Switch to Switch ? should have in your case 2 cross over cables if you are using only 2 ports in the channel group.

 

 

New Member

Re: EtherChannel activation

Hi.

Check again your settings on both interfaces. The configuration on ports that belong to a Etherchannel group need to have exactly the same configuration. Speed, duplex, link type, native vlan, etc.

If a port are with just one of these parameters different from its peer, the channel does not work.

Another way to try is to set speed and duplex in auto/auto mode in all ports of the channel, sometimes (and depending on its version) the ports does not work when hardcoded.

HTH.

New Member

Re: EtherChannel activation

I reconfigured everything and have the same configuration on the ports. Interfaces are up. I can see the Po1 indicating this:

Fa0/1(Pd) Fa 0/8 (P)

Is (Pd) ok for Fa0/1 or both ports should be in (P)?

New Member

Re: EtherChannel activation

(d) stands for default - port in use within the channel group - as you were seeing before (D) signifies down ..

Regards,

Jay Stants

New Member

Re: EtherChannel activation

So... is it OK if one interfaces in the EtherChannel has (Pd)?

In that case... is the first port configured in the EtherChannel always the default - port in use?

New Member

Re: EtherChannel activation

if you wish to test failover with your etherchannel you can do the following which will maybe show you visually the changes that happen.

Switch A port 1 X Switch B Port 1

Switch A port 8 - Switch B Port 8

manually shut down interface FA0/1 on Switch A which will bring down the interfaces ur seeing with (Pd) - this will move the default channel to the second link you have in your etherchannel. issue the show etherchannel summary command .. bring the first link buack up be re-enabling FA0/1 on switch A and the default should still be listed on the second link.

Hope this helps a little .. perhaps reading up on etherchannel will give u a greater understanding as well as to how this works and the benefits.

New Member

Re: EtherChannel activation

Excellent. Thank you.

New Member

Re: EtherChannel activation

Francisco,

No problem,Glad everything is working for you and your gaining a better understanding.

Regards,

Jay

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