08-22-2019 02:42 PM
Hi
Old Doc says (4500 series):
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-4000-series-switches/23408-140.html
PAgP modes are off, auto, desirable, and on.
New Doc says (cat3850):
only auto, desirable modes
which should I believe for the exam?
As per my lab test I can only configure Auto and desirable for PAgP.
Thanks
Siva
Solved! Go to Solution.
08-22-2019 03:15 PM
Hi @sivam siva ,
The new document is more specific.
When you have not configured any EtherChannel, we could say that it is in off mode.
The on mode is a static mode, because it is not part of any protocol.
EtherChannel protocols are used to manage the formation of the channel, using messages from that protocol.
The new document that you attach this is also indicated:
EtherChannel on mode can be used to manually configure an EtherChannel. The on mode forces a port to join an EtherChannel without negotiations. The on mode can be useful if the remote device does not support PAgP or LACP. In the on mode, a usable EtherChannel exists only when the switches at both ends of the link are configured in the on mode.
Ports that are configured in the on mode in the same channel group must have compatible port characteristics, such as speed and duplex. Ports that are not compatible are suspended, even though they are configured in the on mode.
Regards
08-22-2019 03:15 PM
Hi @sivam siva ,
The new document is more specific.
When you have not configured any EtherChannel, we could say that it is in off mode.
The on mode is a static mode, because it is not part of any protocol.
EtherChannel protocols are used to manage the formation of the channel, using messages from that protocol.
The new document that you attach this is also indicated:
EtherChannel on mode can be used to manually configure an EtherChannel. The on mode forces a port to join an EtherChannel without negotiations. The on mode can be useful if the remote device does not support PAgP or LACP. In the on mode, a usable EtherChannel exists only when the switches at both ends of the link are configured in the on mode.
Ports that are configured in the on mode in the same channel group must have compatible port characteristics, such as speed and duplex. Ports that are not compatible are suspended, even though they are configured in the on mode.
Regards
08-23-2019 09:47 AM
Hello @luis_cordova
Thanks for the reply.
I agree that, so can I conclude PAgP modes are only auto & desirable?
Thanks
Siva
08-23-2019 10:23 AM
Hi @sivam siva ,
That's right.
The on mode is not part of any protocol.
Regards
Remember to mark the correct answers as solved, because that helps other users with similar questions
08-23-2019 01:44 PM
Thank you @luis_cordova
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