Re: OT: HSRP on 3750G

The 3750G doesn't support VRRP. I would generally prefer to use a switch to
a router for L3 within a LAN, since it will generally have a larger
backplane for L3 switching for the same price (32Gbps for 3750G versus about
500Mbps max for a 3945 router.)

I did see that the 3750-X series will support up to 256 instances, so that
could be an option, if you don't already have the switch...

Jason Boyers - CCIE #26024 (Wireless)
Technical Instructor - IPexpert, Inc.
Mailto: *jboyers_at_ipexpert.com
*

On Fri, Jun 17, 2011 at 11:28 AM, David Bass <davidbass570_at_gmail.com> wrote:

> Yep, you are correct...tried it out on my 3750G...I've never actually tried
> to do 32+ VLAN interfaces on a 3750 (of any sort actually). I have to ask,
> why would you want to use a 3750G as a distro switch for a site that has
> more than 32 VLANs? I can possibly see doing it at a very small site with
> maybe 2 or 3 VLANs, which I would still do it at the WAN router, but that's
> another topic. Additionally, I certainly would never consider mixing HSRP
> and VRRP on somebodies network. I don't know if it's technically possible,
> but it should not be considered as a possible design because it's just ugly
> as hell. In your case I would probably forgo the L3 distro switch layer and
> leave it as a L2 aggregate only, and then take the L3 to the WAN edge if
> possible.
>
>
>
> On Jun 17, 2011, at 9:42 AM, BALAKRISHNAN Balaji wrote:
>
> > David,
> >
> > That's was true with other platform but not with 3750G...
> > 3750G can have only maximum of 32 HSRP instances does not matter whether
> you use the same instance number or different.
> >
> > Rgds
> > bala
> >
> >> -----Original Message-----
> >> From: David Bass [mailto:davidbass570_at_gmail.com]
> >> Sent: Friday, June 17, 2011 10:40 AM
> >> To: BALAKRISHNAN Balaji
> >> Subject: Re: HSRP on 3750G
> >>
> >> You just use the same number on each VLAN. It just means that you can
> only have 32 different HSRP
> >> numbers...it doesn't mean that you can only run HSRP on 32 interfaces.
> The only reason you need more
> >> than 1 HSRP group number is if you are running multiple groups on the
> same VLAN.
> >>
> >>
> >> On Jun 17, 2011, at 9:36 AM, BALAKRISHNAN Balaji wrote:
> >>
> >>> All,
> >>>
> >>>
> >>> 3750G has the hardware limitation that only 32 HSRP instances can be
> >>> configured.. Do anybody know work around with this limitation.. I have
> a
> >>> setup that needs more than 32 instances to be used in 3750G. Can we
> configure
> >>> VRRP on other remaining vlans or the limitation is applicable to
> HSRP/VRRP
> >>> combined ??
> >>>
> >>>
> >>> Rgds
> >>> Bala.
> >>>
> >>>
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Received on Fri Jun 17 2011 - 12:40:36 ART