Re: HSRP in this design

Hi Naman,

It is not a good practice to run L3 on access layer when VLANs are spanning
across switches.
Best thing would be not to span VLANs across switches, and then run L3 on
access.
If this is not possible then next best thing is to run L3 on the Distribuition
and use L2 trunk between the 2 distribution switches.

Cheers,
Manju

--- On Fri, 18/6/10, naman sharma <naman.prep_at_gmail.com> wrote:

From: naman sharma <naman.prep_at_gmail.com>
Subject: Re: HSRP in this design
To: "Jack Router" <pan.router_at_gmail.com>
Cc: "Cisco certification" <ccielab_at_groupstudy.com>
Date: Friday, 18 June, 2010, 6:58 AM

Ok so to mitigate the spanning tree issue we implemented Layer 3 till Access
layer which means the uplink from Access to Distribution is a layer 3 link
now. But the link between the 2 Access switches (SA01 and SA02) is a trunk
link.

On 17 June 2010 18:12, Jack Router <pan.router_at_gmail.com> wrote:

> Not sure what you mean by Layer 3 on the access switch. Do you route on
> access switches or on core switches? When you want the same vlans on
> multiple access switches you do not configure L3 on them but configure VLAN
> trunking.
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> naman sharma
> Sent: 17-Jun-10 19:41
> To: Cisco certification
> Subject: HSRP in this design
>
> Hi,
>
> We plan to roll out a new design and in this design we plan to push the
> Layer 3 to the access layer. Now my question is that Vlan's span at this
> point to multiple locations.
>
> So when we would be configuring Layer 3 on Access Layer same vlan will be
> on
> Multiple Access switch. Now as the users are getting the I.P Address
> through
> DHCP so we plan to implement HSRP so that DHCP Scope can provide same
> Default Gateway but this is not a clean design as this can lead to longer
> path for eg User at SA01 gets a Default gateway and the Primary router for
> that User Vlan is SA02 and hence the traffic flows to SA01 and then SA02
> and
> then goes out.
>
> Is there any other clean solution.
>
> thanks
> naman
>
>
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Received on Sun Jun 20 2010 - 00:31:31 ART