From sar at knowledgecomputers.net  Wed Mar 26 12:16:38 2008
From: sar at knowledgecomputers.net (Sarpreet Basi)
Date: Wed, 26 Mar 2008 09:16:38 -0700
Subject: [c-ubr] uBR-7223 Question
Message-ID: <47EA76E6.7020808@knowledgecomputers.net>

Hi,

Doing a little consulting here.  We are looking for a CMTS and 
associated hardware/modems to launch high speed internet on our CATV 
system. I would estimate that we will have between 3000-4000 modems in 
use but would also like to have room for expansion. Like to have 
redundancy as well.

Thinking of the following:

uBR7223
NPE-225
I/O-FE
2x uBR-MC16C

Would this config support 4000+ users?


Regards,

Sarpreet Basi
Knowledge Computers
Email: sar at knowledgecomputers.net
Toll-free: 800.967.6609 x102
International: 250.748.0818 x102
Fax: 250.748.3388
Mobile: 250.709.0336

-----------------------------
AOL IM: sarpreetb
MSN: sarpreet at hotmail.com
www.knowledgecomputers.net


From reneroger at gmail.com  Wed Mar 26 13:50:33 2008
From: reneroger at gmail.com (=?UTF-8?Q?Ren=C3=A9-Roger_Ziesack?=)
Date: Wed, 26 Mar 2008 18:50:33 +0100
Subject: [c-ubr] uBR-7223 Question
In-Reply-To: <47EA76E6.7020808@knowledgecomputers.net>
References: <47EA76E6.7020808@knowledgecomputers.net>
Message-ID: <c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>

Hi Basi,

the depends on some parameters - which bandwidth do you plan per user?
What kind of services do you plan to provide (internet only, voice
services)?
How does you network look like (SNR, ingress)?

In general; what you described is more a minimal configuration without any
redundancy.


cu
rene-roger


2008/3/26, Sarpreet Basi <sar at knowledgecomputers.net>:
>
> Hi,
>
> Doing a little consulting here.  We are looking for a CMTS and
> associated hardware/modems to launch high speed internet on our CATV
> system. I would estimate that we will have between 3000-4000 modems in
> use but would also like to have room for expansion. Like to have
> redundancy as well.
>
> Thinking of the following:
>
> uBR7223
> NPE-225
> I/O-FE
> 2x uBR-MC16C
>
> Would this config support 4000+ users?
>
>
> Regards,
>
> Sarpreet Basi
> Knowledge Computers
> Email: sar at knowledgecomputers.net
> Toll-free: 800.967.6609 x102
> International: 250.748.0818 x102
> Fax: 250.748.3388
> Mobile: 250.709.0336
>
> -----------------------------
> AOL IM: sarpreetb
> MSN: sarpreet at hotmail.com
> www.knowledgecomputers.net
>
> _______________________________________________
> cisco-ubr mailing list
> cisco-ubr at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-ubr
>
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From fl at fl.priv.at  Wed Mar 26 15:51:06 2008
From: fl at fl.priv.at (Friedrich Lobenstock)
Date: Wed, 26 Mar 2008 20:51:06 +0100
Subject: [c-ubr] uBR-7223 Question
In-Reply-To: <c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>
References: <47EA76E6.7020808@knowledgecomputers.net>
	<c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>
Message-ID: <47EAA92A.5070309@fl.priv.at>

Hi!

*This time with the correct attachments*

Ren?-Roger Ziesack wrote on 26/03/08 18:50 MET:
> 
> the depends on some parameters - which bandwidth do you plan per user?
> What kind of services do you plan to provide (internet only, voice 
> services)?
> How does you network look like (SNR, ingress)?
> 
> In general; what you described is more a minimal configuration without 
> any redundancy.

Attached two load and one traffic graphs of almost the same UBR with
currently 406 installed modems.

Setup:
    uBR7223 with:
    1x NPE-225 (128M RAM)
    1x I/O-FE
    1x PA-FE-TX
    1x uBR-MC16S (uBR-MC16C with Spectrum Analyzer)

To be realistic with 4000 installed modems you probably need at least 50
from your upstream ISP.

One uBR-MC16C can realistically do 20MBit (30Mbit theoretically) in the
downstream - tested it myself.

At least a uBR7246 VXR with NPE-400 and 2x uBR-MC28C would be what I would
choose for in your case.

But I'm not really qualified as I haven't gone there myself yet.

-- 
MfG / Regards
Friedrich Lobenstock

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From fl at fl.priv.at  Wed Mar 26 15:37:48 2008
From: fl at fl.priv.at (Friedrich Lobenstock)
Date: Wed, 26 Mar 2008 20:37:48 +0100
Subject: [c-ubr] uBR-7223 Question
In-Reply-To: <c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>
References: <47EA76E6.7020808@knowledgecomputers.net>
	<c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>
Message-ID: <47EAA60C.2080801@fl.priv.at>

Hi!

Ren?-Roger Ziesack wrote on 26/03/08 18:50 MET:
> 
> the depends on some parameters - which bandwidth do you plan per user?
> What kind of services do you plan to provide (internet only, voice 
> services)?
> How does you network look like (SNR, ingress)?
> 
> In general; what you described is more a minimal configuration without 
> any redundancy.

Attached two load and one traffic graphs of almost the same UBR with 
currently 406 installed modems.

Setup:
   uBR7223 with:
   1x NPE-225 (128M RAM)
   1x I/O-FE
   1x PA-FE-TX
   1x uBR-MC16S (uBR-MC16C with Spectrum Analyzer)

To be realistic with 4000 installed modems you probably need at least 50 
from your upstream ISP.

One uBR-MC16C can realistically do 20MBit (30Mbit theoretically) in the 
downstream - tested it myself.

At least a uBR7246 VXR with NPE-400 and 2x uBR-MC28C would be what I would 
choose for in your case.

But I'm not really qualified as I haven't gone there myself yet.

-- 
MfG / Regards
Friedrich Lobenstock
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From tdoyle at 4grc.com  Wed Mar 26 16:21:28 2008
From: tdoyle at 4grc.com (tdoyle at 4grc.com)
Date: Wed, 26 Mar 2008 15:21:28 -0500
Subject: [c-ubr] Autoreply: Re:  uBR-7223 Question
Message-ID: <200803262224.m2QMOeLi026154@puck.nether.net>


My new mail address is trent.doyle at yahoo.com

Hi!

*This time with the correct attachments*

Ren?-Roger Ziesack wrote on 26/03/08 18:50 MET:
> 
> the depends on some parameters - which bandwidth do you plan per user?
> What kind of services do you plan to provide (internet only, voice 
> services)?
> How does you network look like (SNR, ingress)?
> 
> In general; what you described is more a minimal configuration without 
> any redundancy.

Attached two load and one traffic graphs of almost the same UBR with
currently 406 installed modems.

Setup:
    uBR7223 with:
    1x NPE-225 (128M RAM)
    1x I/O-FE
    1x PA-FE-TX
    1x uBR-MC16S (uBR-MC16C with Spectrum Analyzer)

To be realistic with 4000 installed modems you probably need at least 50
from your upstream ISP.

One uBR-MC16C can realistically do 20MBit (30Mbit theoretically) in the
downstream - tested it myself.

At least a uBR7246 VXR with NPE-400 and 2x uBR-MC28C would be what I would
choose for in your case.

But I'm not really qualified as I haven't gone there myself yet.

-- 
MfG / Regards
Friedrich Lobenstock



From xlimitx at gmail.com  Sun Mar 30 09:03:00 2008
From: xlimitx at gmail.com (James Galliford)
Date: Sun, 30 Mar 2008 09:03:00 -0400
Subject: [c-ubr] uBR-7223 Question
In-Reply-To: <47EAA60C.2080801@fl.priv.at>
References: <47EA76E6.7020808@knowledgecomputers.net>
	<c4b38cbe0803261050m30f11bf8k7dbb6f8a8b4c848@mail.gmail.com>
	<47EAA60C.2080801@fl.priv.at>
Message-ID: <F0C46897-7453-4CA5-A204-67082F1516DB@gmail.com>

I'd say that it might be a stretch with a 7223.  12.1 software is  
buggy and as far I know is eos.  12.2 software will crush a Npe-225  
with that many modems.

Might want to look at a 7225vxr instead.

Sent from my iPhone

On Mar 26, 2008, at 15:37, Friedrich Lobenstock <fl at fl.priv.at> wrote:

> Hi!
>
> Ren?-Roger Ziesack wrote on 26/03/08 18:50 MET:
>> the depends on some parameters - which bandwidth do you plan per  
>> user?
>> What kind of services do you plan to provide (internet only, voice  
>> services)?
>> How does you network look like (SNR, ingress)?
>> In general; what you described is more a minimal configuration  
>> without any redundancy.
>
> Attached two load and one traffic graphs of almost the same UBR with  
> currently 406 installed modems.
>
> Setup:
>  uBR7223 with:
>  1x NPE-225 (128M RAM)
>  1x I/O-FE
>  1x PA-FE-TX
>  1x uBR-MC16S (uBR-MC16C with Spectrum Analyzer)
>
> To be realistic with 4000 installed modems you probably need at  
> least 50 from your upstream ISP.
>
> One uBR-MC16C can realistically do 20MBit (30Mbit theoretically) in  
> the downstream - tested it myself.
>
> At least a uBR7246 VXR with NPE-400 and 2x uBR-MC28C would be what I  
> would choose for in your case.
>
> But I'm not really qualified as I haven't gone there myself yet.
>
> -- 
> MfG / Regards
> Friedrich Lobenstock
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