At 05:58 AM 3/20/2001 -0600, you wrote:
>First, thanks for all of your comments. All were very helpful.
>
>Next, obviously I wasn't very clear in my previous message. I did not
>mention that both router redundancy and FR redundancy are important to the
>company I currently work for. And, we currently have one router already in
>place as our primary FR router. The 3640 I propose in my earlier message is
>an extra in the event the other 'box' dies. While it is more likely that an
>outage would result from the provider I would like to cover all bases
>possible on the 'inside of the smartjack'.
Thanks for the clarification; it helped. Personally, I would not think
that the
probability of an interface card failure is more or less likely than the
failure of
any other router module. I would not, for that reason, go to additional
interfaces.
Again, I strongly recommend looking at alternate transmission alternatives.
If some applications are far more critical than others, and/or degraded
performance
is better than no performance, there still can be a role for dial or ISDN
backup.
Conceivably, wireless service over dial would be a low-speed option with
minimal overlap with FR equipment. CATV is probably a better option, unless
your telco offers diverse local loops.
There are creative options here. I do see an increasing number of office parks
and multi-tenant buildings being connected to diverse SONET rings, with a
multiplexer or switch at the site, to drop appropriate bandwidth to individual
customers. I've also seen cooperation between organizations in a downtown
area, where they run private fiber through utility tunnels between their
buildings
(each serviced by a different CO) and provide mutual backup.
>Again, thanks for all of your suggestions. I particularly like the idea of
>a backup PVC. I may explore that option further.
>
>May God bless,
>
>Raul
>
>P.S. To Victor, I am from Texas, USA
>
>
> >From: "Raul De La Garza" <[EMAIL PROTECTED]>
> >Reply-To: "Raul De La Garza" <[EMAIL PROTECTED]>
> >To: [EMAIL PROTECTED]
> >Subject: How to Make Frame Relay Redundant?
> >Date: Mon, 19 Mar 2001 15:16:15 -0600
> >
> >Please forgive me if this topic has already been explored.
> >
> >I am considering the purchase of a 3640 in order to provide Internet access
> >to our office at 100 Mbps. I will outfit it with 2 10/100 2-port modules.
> >
> >I am also considering making our Frame Relay network redundant by adding
> >two
> >1-port T1 w/CSU WICs, however, with only two FR lines coming in how would I
> >make this a fault tolerant solution without having to obtain two more FR
> >circuits? HSRP is definitely being considered. Obviously, an Ethernet hub
> >or switch is out of the question.
> >
> >Any help you could provide would be greatly appreciated.
> >
> >Raul De La Garza III
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