From: Mike Kraus (mikraus) (mikraus@cisco.com)
Date: Tue Apr 15 2008 - 16:33:48 ART
Yes, but try having each 3750s in two different buildings. Remember,
it's 10Gbps optics between the VSS pair. Also, if it's a large data
center you're likely going to have other needs too (such as
load-balancing - ACE modules) that 6500s are more conducive for.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Joseph Brunner
Sent: Tuesday, April 15, 2008 10:57 AM
To: Mike Kraus (mikraus); 'Geert Nijs'; ccielab@groupstudy.com
Subject: RE: Poll: VSS
>Having the ability to build an etherchannel from a server to two
>different switches is extremely powerful and just flat out cool.
You mean like lacp with a stack of 3750's? heeheeheeheeheehee
Come on... how many installations need 6500's with vss? I just have
EVERYONE buy 3750's even for big datacenters!!!!
-Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mike Kraus (mikraus)
Sent: Tuesday, April 15, 2008 9:00 AM
To: Geert Nijs; ccielab@groupstudy.com
Subject: RE: Poll: VSS
I have done VSS configuration testing with one of my customers, and I
want to say it has been absolutely fantastic. It is a feature that is
relatively simple to enable, provides outstanding architectural
advantages (less routing peers, no need for a NHRP), and I have found it
to be deterministic in function. I did run into a bug in 12.2SXH1
during my testing, but this has been fixed in 12.2SXH2. The primary
downside is the system requirements (Sup720-10G, 67xx line cards, etc.).
So, while it would be great to do VSS everywhere within a campus it
really is cost prohibitive for most customers to do so.
For the best experience, make sure you enable NSF and watch out for
unicast flooding as well (you may need to adjust timers).
In my opinion, VSS will be used in places in the network where maximum
uptime is required (cores and some distribution), but use in access
layers would only be cost justified in server farms that require this
uptime. Having the ability to build an etherchannel from a server to
two different switches is extremely powerful and just flat out cool.
Granted... I'm with Cisco, so perhaps I've just been brainwashed too. :)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Geert Nijs
Sent: Tuesday, April 15, 2008 6:34 AM
To: ccielab@groupstudy.com
Subject: Poll: VSS
Hi group,
Does anyone have experience with VSS that it wants to share to the group
?
regards,
Geert
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