Re: ACE Routing vs Bridge

From: Jason W. Miller (jaymiller5@gmail.com)
Date: Sun Nov 16 2008 - 21:01:57 ARST

There are limitations in Routed mode (static routing only as well as does
not allow multicast routing) that would dictate the use of bridge mode over
routed. The main reason to use bridged instead of routed would be the
requirement of allowing multicast routing or IGP routing protocols to
support dynamic routing as well as some others like WAAS wishing to be layer
2 away from your routing domain and load balance them. As other have stated
there are other limitations and considerations with using bridged mode that
routed fit better for.

So think about what your objective is, how it will impact your deployment,
where this design is going to be deployed etc. Also you can technically
deploy the ACE module in both routed and bridged when using contexts and
setting up your BVI's and VLAN configurations within the ACE admin
context. This was also available on the CSM but now they allow for the
dedication of the contexts within the ACE platform.

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/rtg_brdg/guide/rtbrgdgd.html

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/rtg_brdg/guide/preface.html

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/virtualization/guide/ovrview.html

On Sun, Nov 16, 2008 at 2:58 PM, Pavel Bykov <slidersv@gmail.com> wrote:

> A lot of it depends on design - what you need. But in bridge mode there are
> limitations, e.g. context limits, or that you need to use BVI
> But it also has advantages, .e.g. no dynamic routing protocols are required
> and it doesn't appear as a hop.
>
> On Sun, Nov 16, 2008 at 5:49 PM, Edouard Zorrilla <ezorrilla@tsf.com.pe
> >wrote:
>
> > Hello there,
> >
> > When should I consider using Routing mode instead of Brigge and vice
> versa
> > ?
> > Is there any rule for using one or the other ? or this is jus a matter of
> > addressing when configuring it inside the ACE module,
> >
> > Regards
> >
> >
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>
> --
> Pavel Bykov
> -------------------------------------------------
> Stop the braindumps!
> http://www.stopbraindumps.com/
>
> 

-- 
Jason W. Miller
Two things are infinite: the universe and human stupidity; and I'm not sure
about the universe." Albert Einstein

Blogs and organic groups at http://www.ccie.net

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