Re: LACP/Ethernet

Taufik,

If you set mode to "on" it simply means that LACP/PAgP is disabled and both
ends have to be manually set to "on" in order to form EC. If you want to
negotiate EC using LACP, at least one end has to be configured as active
(other can be active or passive). For PAgP, at least one end has to be
configured to desirable (with the other one being auto or desirable).

Regards,
Piotr K

On Tue, Jun 29, 2010 at 3:49 AM, Taufik Kurniawan <ktaufik_at_gmail.com> wrote:

> I think to make it etherchannel only we have to make it "on"
>
> Router#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> Router(config)#int range
> Router(config)#int range f1/0 - 4
> Router(config-if-range)#chan
> Router(config-if-range)#channel-group ?
> <1-6> Channel group number
>
> Router(config-if-range)#channel-group 1 ?
> mode Etherchannel Mode of the interface
>
> Router(config-if-range)#channel-group 1 mode ?
> on Enable Etherchannel only
>
> for LACP we need to make it active or passive
> and etherchannel mode are on, auto, desirable ?
>
>
>
> On 28 June 2010 21:29, Tyson Scott <tscott_at_ipexpert.com> wrote:
>
> > Sounds like the question isn't very well written.
> >
> > Etherchannel is the bonding of two or more interfaces
> > PAGP and LACP simply provide the negotiation capability of this.
> >
> > Now if the question said to not negotiate the etherchannel then that
> would
> > be another story.
> >
> > Regards,
> >
> > Tyson Scott - CCIE #13513 R&S, Security, and SP
> > Managing Partner / Sr. Instructor - IPexpert, Inc.
> > Mailto: tscott_at_ipexpert.com
> >
> >
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > Douglas Kempthorne
> > Sent: Monday, June 28, 2010 2:21 PM
> > To: ccielab_at_groupstudy.com
> > Subject: LACP/Ethernet
> >
> > So I'm working through a self-study lab and was asked to 'Ensure that
> only
> > dot1q and EtherChannel are supported'. The answer guide listed it as
> 'mode
> > on' and singled out that it was 'only etherchannel' and not 'pagp or
> lacp'.
> > I configured 'mode active' (a "bad" habit of my preferred method of
> > configuration).
> >
> > So my question is are LACP and PAGP subsets and still an 'etherchannel',
> or
> > is a true etherchannel limited to 'mode on'?
> > (And this is more from an academic standpoint - I the lab didn't single
> out
> > either lacp or pagp requirements and know I should stick to what I'm told
> > to
> > configure).
> >
> > Thanks!
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
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>
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>
>
>

-- 
Piotr Kaluzny
CCIE #25665 (Security), CCSP, CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net