wow! That's going to take someone with far more design experience than I
have. You're right, those SLAs have you backed into a corner,
technologically. Hopefully, someone on the list might be able to offer
better advice than I can.
Good luck!
John
> Hi John, thanks for the reply.
>
> Yes Howard is very correct, and a little more info here is required.
>
> Here is the deal...
>
> 1) My company is in the startup phases of a datacenter that will have a
> varitity of services, ISP, ASP, Outsourcing, distributed servers, etc.
Think
> of exodus on a local scale.
>
> 2) We are waiting on USWest to deliver a OC3 with SST SHARPS which will
be
> upgraded to a full SONET ring further down the road. Until then we are
still
> on a type 2 network, i.e. copper. We are able to live with the copper
until
> the self healing redundant fiber is hot.
>
> 3) We have cold stand by routers/switches to roll for the HSRP
deployment.
> We maintain a 24x7x4 SmartNet contract on all mission critcal equipment.
>
> 4) We will have in place for many of our customers a SLA that has a
99.999%
> uptime. This works out to about 1 minute of down time per month. There
are
> some things that we just can not control, i.e. local loops and the like.
But
> we must make every effort to prevent downtime in our walls. With the 5
nines
> SLA there is no room for a 4 hour wait for a new router from Cisco, or
for a
> tech to run across the floor and move the serial lines. It has to be
> automatic and fast in both detection of a failure and failover to a
working
> platform.
>
> Once the fiber goes hot the FR is not a problem, as we will be our own
frame
> switch with redundant point to point DS1 lines that come under the SST
> SHARPS/SONET redunancy.
>
> So with the above you can see the problem, the 5 nines SLA. We can not
> afford long down times. The best USWest can come up with is the call the
> computer to move the PVCs to a new line, which is no better than a tech
> running to move serial lines. This may end up as one those beyond our
> control items, but surely someone else has had to deal with this problem
> before, and maybe there is a solution.
>
> TIA
> --
> John Hardman, MCSE+I, CCNA
> ArrisTech/CCS-IS SysAdmin
>
>
> "John Neiberger" <[EMAIL PROTECTED]> wrote in message
> 12546882.963278742466.JavaMail.imail@tiptoe">news:12546882.963278742466.JavaMail.imail@tiptoe...
> > If you're worried about your 4500 dying, then either buy another to
have
> > there waiting, or get a 24/7 service contract that would get a
replacement
> > to you quickly if needed. If you're worried about the circuits to your
> > building going down all at once, then you simply need to get separate
> > redundant links to your provider.
> >
> > If you're worried about the provider, then things get a little
stickier.
> To
> > again quote Howard the Great, "What is the problem you are trying to
> solve?"
> > It's such a great quote, why not use it? And it applies. Redundancy
is
> > fine, but what exactly is it that you're worried about? To gain
complete
> > and full redundancy would be an expensive venture at best, and a
nightmare
> > at worst. How much is it worth to your company?
> >
> > If your system goes down for a short period, are you losing a lot of
> money?
> > Are you in e-commerce? Can you handle being down for a few hours? If
so,
> > then get the service contract. If you absolutely cannot handle being
down
> > for more than a very brief period, then make sure the higher-ups
> understand
> > that this type of redundancy *might* get very expensive very quickly.
> >
> > Then again, it all depends. :-)
> >
> > > Hi
> > >
> > > It is not so much the out lying sites I am worried about, I have a
dial
> > > backup (ISDN BRI to PRI) now. There are only a couple of sites that
> fall
> > > under the HSRP mandate.
> > >
> > > But I have a single 4500 doing the host part (i.e. the hub in a hub
and
> > > spoke design) of the FR network. So what I need to do is have the
4500
> > > backed by another 4500 running HSRP and have all interface serial
and
> > > ethernet failover.
> > >
> > > Thanks for the reply!
> > > --
> > > John Hardman, MCSE+I, CCNA
> > >
> > > ""Odell, Jeff"" <[EMAIL PROTECTED]> wrote in message
> > > CD9DBAE1E066D311A8AE00805FA7F57C01768629@NTMAIL03">news:CD9DBAE1E066D311A8AE00805FA7F57C01768629@NTMAIL03...
> > > > John,
> > > >
> > > > Depending on your bandwidth needs you might want to consider ISDN.
> My
> > > > company uses BRI ISDN to back up each frame relay connection.
> Fairly
> > > > inexpensive and with a few lines in your router config, can
> > automatically
> > > > come up when the frame relay goes down. I would recommend a 800
> series
> > > > router for relatively low traffic sites (I use them for small
offices
> > of
> > > up
> > > > to 30 people) to back up a 2600 running the frame connection.
> > > >
> > > > All in all, it is a relatively cheap and functional solution.
> > > >
> > > > If you share some more info like your bandwidth requirements, etc.
I
> am
> > > sure
> > > > others will chime in with other recommendations.
> > > >
> > > > Jeff Odell
> > > > CCNA CCDA
> > > >
> > > > -----Original Message-----
> > > > From: John Hardman [mailto:[EMAIL PROTECTED]]
> > > > Sent: Monday, July 10, 2000 4:27 PM
> > > > To: [EMAIL PROTECTED]
> > > > Subject: High availability design with FR, how?
> > > >
> > > >
> > > > Hi All...
> > > >
> > > > I have a mandate from on high that all of our routers now have
HSRP
> > > support.
> > > > Not a problem on the LAN side, and I have worked out the point to
> point
> > > line
> > > > issues by using channelized lines and creating two serial lines.
But
> > the
> > > > frame relay (FR) is killing me!
> > > >
> > > > So far the only solution seems to be with the telco providing a
> second
> > FR
> > > > host line that in the event of failure we call a computer at their
> end
> > and
> > > > dial a few numbers and the PVCs are moved to the secondary FR host
> > line.
> > > > Needless to say doesn't sound too hot to me, as it requires that
> > > everything
> > > > work just right to get a reasonable failover, and this may not be
in
> a
> > > > timely manner.
> > > >
> > > > Anyone have any thoughts?
> > > > --
> > > > John Hardman, MCSE+I, CCNA
> > > >
> > > >
> > > >
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