Re: Etherchannel silent mode

Hi,

I don't usually post here because I'm not so far into my studies but I was
asking myself the same question (so I'll give this a stab for the learning
experience).
Heres my undertanding - I hope its right - maybe someone can confirm?

Silent submode listens for PAgP packets from the other end and IF none are
received it assumes that a channel should be built anyway and will stop
expecting PAgP packets from the far end. This allows forming an Etherchannel
with something like a `file server or network analyzer (this would allow you
to see PAgP packets generated by the switch as if operating a normal
etherchannel.

If there is a PAgP switch at the far end you should use "non-silent"

On - Unconditionally channel with no negotiation.

Auto - passively listen and WAIT to be asked.

Desirable - Actively ask.

I hope I understood your question correctly.

-- 
Shane Killian
shane_at_shanekillian.net
http://shanekillian.net
On Thu, Aug 19, 2010 at 10:43 AM, Keegan Holley
<keegan.holley_at_sungard.com>wrote:
> Ok, I'm a little confused by this.  As I was the first (and second) time I
> read it.  So apparently pagp operates in a silent mode by default where it
> does not require the far end device to send pagp frames before adding a
> port
> to an etherchannel.  That makes sense although a little counterintuitive.
>  However, if this is the case what's the difference between the negotiated
> modes and unconditional trunking?  Also, in the case of auto mode, I
> thought
> the whole point was for it to be passive and wait for PAgP frames to be
> sent.
>
>
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