Sorry, I'm currently out of the office.  

If this is concerning a UCA Information Technology matter that requires 
immediate attention, please contact the IT HelpDesk at 450-3107 or 
[email protected].

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I can.

Wayne

>>> Ian Lyons <[email protected]> 11/25/13 07:36 >>>

Good Morning

I have done both. For years I had a primary and secondary link going to
each of my "core" routers (those that connect to the internet).

Every thing was good. I did make sure that root bridge was set for each
router and each routers subsequent switches.  I also monitored the status
of the "changes"....

Recently, we merged the 2 cores and I went to Lagging.  Aside from the time
it took to create the links everything is working well and has been for
about a 6 months.

I tested the bejesus out of it (pulling link cables) and even the pickiest
application handles the link state changes well.

Both work...  Dealers choice.

Ian

Cheers,
Ian J. Lyons   Manager of Network Services  RISD     401.454.6779

"Twenty years from now you will be more disappointed by the things that you
didn't do than by the ones you did do. So throw off the bowlines. Sail away
from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
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difficult still, to leave unsaid the wrong thing at the tempting
moment."          - Benjamin Franklin

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in his subject, and how to avoid them"- Physicist Werner Karl Heisenberg.

"Any sufficiently advanced technology is indistinguishable from magic."
 -Arthur C. Clarke, "Profiles of The Future", 1961 (Clarke's third law)

"Pick battles big enough to matter, small enough to win." - Jonathon Kozol

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On Sun, Nov 24, 2013 at 8:57 PM, James Andrewartha <
[email protected]> wrote:

> Hi list,
>
> I'm setting up dual fibre links between our core and edge switches, and
> was pondering whether to set up link aggregation or use MSTP to balance
> the traffic across the links. My primary concern is for redundancy, not
> extra bandwidth (I just checked cacti, and most don't sustain 100Mb/s).
> How do MSTP and LACP compare for failover times?
>
> The other thing about LACP is the config overhead of having to set the
> aadminkey on the physical and LAG ports plus ensuring the VLANs match.
> Whereas with MSTP I don't have to worry about the LAG port, and can just
> set a port priority on the SID to balance the traffic if required.
>
> I'm leaning towards MSTP, but every man and his dog seems to have a
> spanning-tree meltdown story. All the switches will be Enterasys (S4 at
> the core, B3/B5 at the edge) so you'd think it should all work fine.
> Opinions?
>
> Thanks,
>
> --
> James Andrewartha
> Network & Projects Engineer
> Christ Church Grammar School
> Claremont, Western Australia
> Ph. (08) 9442 1757
> Mob. 0424 160 877
>
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