Re: OT - RE: Multichassis etherchannel

I understand. At the risk of a flaming, Nortel has been doing split-MLT for
years. I just don't have a lot of experience with it on the Cisco side.
Nice to see they have caught up.

PS: This is not a pitch for Nortel....

Charles Henson

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  |roberto gonzalez <roboto92_at_gmail.com> |
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  |Bill McKenzie <bmckenzie_at_hotmail.com> |
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  |Charles.Henson_at_regions.com, "Sharifi, Reza" <Reza.Sharifi_at_gdit.com>, "ccielab_at_groupstudy.com" <ccielab_at_groupstudy.com>, groupstudytac |
  |groupstudytac <groupstudytac_at_gmail.com>, nobody_at_groupstudy.com |
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  |07/16/2010 02:10 PM |
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  |Re: OT - RE: Multichassis etherchannel |
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Hi,

MEC is to do etherchannel between more than 2 devices.

Look

sw1VSS----------sw2VSS

       \ /
             SW3

SW3 do ehterchannel between 2 devices. With VSS feature sw3 sees sw1 and
sw2 as one device and etherchannel does not have problem until this point,
if the connection between sw1 and sw2 where the VSS is doing SW3 will have
problems coz now it sees 2 diferent devices (you can only do ehterchannel
between 2 devices). That is why MEC is done if connection between sw1 and
sw2 is down sw3 only sees one device and avoids stp loops, etc....

Regards

2010/7/16 Bill McKenzie <bmckenzie_at_hotmail.com>
  They call it cross-stack etherchannel on the 3750's.

  On Fri, Jul 16, 2010 at 2:22 PM, <Charles.Henson_at_regions.com> wrote:

> I thought MEC was more of a VSS thing. So it applies to the 6500s with
  VSS.
> But the 37xx stack is not really VSS. Am I being too nitpicky or am I
> missing something?
>
> Charles Henson
>
>
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> |"Sharifi, Reza" <Reza.Sharifi_at_gdit.com>
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> |groupstudytac groupstudytac <groupstudytac_at_gmail.com>, "
> ccielab_at_groupstudy.com" <ccielab_at_groupstudy.com>
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> |07/16/2010 11:55 AM
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> |RE: Multichassis etherchannel
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>
>
>
>
>
> MEC would work using 6500 or 3750s stacked.
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> groupstudytac groupstudytac
> Sent: Friday, July 16, 2010 11:29 AM
> To: ccielab_at_groupstudy.com
> Subject: Multichassis etherchannel
>
> Hi all , can i achiv MEC with a trunk port on a 6500 dat is
> terminating radio links and communicating on IP via ip addreses
> assiggned to different interface vlans
>
> --
> Sent from my mobile device
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  Bill McKenzie
  Technical Architect
  CCIE#16725,CCVP,CCSP,HP MASE
  614.216.8226

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Received on Fri Jul 16 2010 - 14:16:16 ART