From: Venkataramanaiah.R (vramanaiah@gmail.com)
Date: Wed Mar 01 2006 - 12:50:28 GMT-3
I have not heard about this myself that Cisco is pushing L3 upto
Access, but i can foresee few other issues in doing this..
For eg., what will happen to the Voice network. Will you have one
subnet per Access switch for IP Phones.. Guess this will become
unmanageable if you have just a couple of IP Phones per closet. Same
with Wireless APs, the wired side is usually on the Access switches.
Vlan management for these services w/o L2 upto Distribution might
become cumbersome..
Just my 2 cents
-Venkat
On 3/1/06, Guyler, Rik <rguyler@shp-dayton.org> wrote:
> Well, what I meant (sorry for not being specific enough) was to create a
> *second* link between switches and closets that all participate in a single
> VLAN dedicated for RSPAN only. If you have extra fiber pairs/copper between
> closets then this shouldn't be too expensive. Might have to buy some media
> converters or other assorted hardware but I think it's still a good
> solution. I would want to lab it up with 2 or 3 switches first though just
> to see what unexpected little surprises may exist. ;-)
>
> Rik
>
> -----Original Message-----
> From: Leigh Harrison [mailto:ccileigh@gmail.com]
> Sent: Wednesday, March 01, 2006 9:40 AM
> To: Guyler, Rik
> Cc: 'ccielab@groupstudy.com'
> Subject: Re: To route or not to route.....
>
> Hey there Rik,
>
> I'd had a thought about that and leaving one vlan for rspan specifically,
> but the problem there is that on the uplink interfaces, you have to throw in
> the commands: "no switchport, ip address 1.2.3.4"
> which means that no vlans will be passed over!!
>
> LH
>
>
> Guyler, Rik wrote:
>
> >Leigh, I haven't run into this but we're considering L3 at the access
> >layer as well for future design. The problem I see is once you go with
> >L3 you no longer have a path to really setup the RSPAN. What about
> >creating a separate L2 link between all switches dedicated just for the
> RSPAN session?
> >I really like the L3 access layer design but it certainly makes things
> >like this much more interesting... ;-)
> >
> >Rik
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> >Leigh Harrison
> >Sent: Wednesday, March 01, 2006 7:48 AM
> >To: FORUM
> >Subject: To route or not to route.....
> >
> >All,
> >
> >I'm currently working on a design for a customer. Straight forward
> >design with Access and a Core. 3750's in the access layer and a 6513
> >in the core (yes there is only 1, but the customer already has it, it
> >has dual sup cards and dual power supplies...) the 3750's are in stacks
> >and there is dual gig links back to the core.
> >
> >I was at a Cisco seminar recently where Cisco said that the best
> >practice is to route, rather than use spanning tree and switch,
> >essentially turn off spanning tree. I'm quite happy to run either way,
> >but I do have a
> >question:-
> >
> >We are running VoIP on the network and there is call recording software
> >going in. This needs to have the ports of the gatekeepers span'd to it
> >so that it can do the recording. If I'm routing my network, what are
> >the options for accomplishing this if my gatekeepers are not connected
> >to the same switch?
> >
> >I presume that someone out there has run into a similar issue, so any
> >insight would be greatly appreciated.
> >
> >Best Regards
> >LH
> >#15331
> >
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