IP Dslams

Fri Jan 4 17:53:26 UTC 2019

The "newer" replacement for the 42xx series was the bitstorm (Bitstorm-RP2-152-AC), and they came in AC as well and 48 ports -- in a 1.5 U I think .

-----Original Message-----
From: "Blake Hudson" <blake at ispn.net>
Sent: Friday, January 4, 2019 12:47pm
To: nanog at nanog.org
Subject: Re: IP Dslams

I was thinking the same thing. They're a few years out of support, but the Zhone 42xx IP DSLAM provides a 1Gbps ethernet uplink and 24 ADSL2+ DSL user ports per 1U chassis (stackable to achieve 192 ports total). Wish they were available in AC for non-telco use.
     [ http://support.zhone.com/support/manuals/docs/42/4200-A2-GN21-40.pdf ]( http://support.zhone.com/support/manuals/docs/42/4200-A2-GN21-40.pdf )

 You could pair these with a pfSense appliance (or an x86 PC running the free software) to provide DHCP, DNS, etc - or use the built in pfSense captive portal to provide additional authentication and accounting per user. pfSense can provide NAT and FW if needed, or these features can be disabled to use globally routable IP4/IP6 addresses.

 As far as support goes, backup your pfsense and DLSAM configs when you finish the project and the subscriber accounts and DSL modems could be maintained by a local admin through the pfSense web interface with no need to touch the DSLAMs or anything CLI.

 --Blake

Shawn L via NANOG wrote on 1/4/2019 8:59 AM:
Might want to look for old Zhone ip bitstorm dslams.  There should be a bunch on the used market.  They do all of the ATM conversions internally so you just need to feed them with ethernet.

 -----Original Message-----
 From: "Nick Edwards" [ <nick.z.edwards at gmail.com> ]( mailto:nick.z.edwards at gmail.com )
 Sent: Friday, January 4, 2019 9:36am
 To: "Brandon Martin" [ <lists.nanog at monmotha.net> ]( mailto:lists.nanog at monmotha.net )
 Cc: "NANOG" [ <nanog at nanog.org> ]( mailto:nanog at nanog.org )
 Subject: Re: IP Dslams

They don't have a large budget and although I'm yet to get prices on adtran's (understandable, holidays 'n all) I doubt it will fit within their budget, it's looking more like getting a few planet dslams and configuring a linux box as the bng, been 10 years since I've had to do that kind of setup, memories hazy, but I know it worked, and well, so thanks to all for suggestions but the adtrans and nokias are not for those on shoe string budgets, which wouldnt even allow me to include an asr1k for the bng, and although it would allow for, I'd rather not grab an ebay 7200/7300 :)

On Wed, Jan 2, 2019 at 10:52 PM Brandon Martin <[ lists.nanog at monmotha.net ]( mailto:lists.nanog at monmotha.net )> wrote:On 1/2/19 6:47 AM, Nick Edwards wrote:
 > There are 260 villas, and no coax.

 Is there a logical way to distribute the termination?  You might be able 
 to get better performance (not that you perhaps care, in this case) at 
 minimal additional cost if you can do building-local termination of each 
 customer circuit and then backhaul on e.g. bonded VDSL2 or G.FAST over 
 shorter distances (perhaps hopping building to building).

 I'm assuming there's no data grade copper or fiber if there's no coax. 
 Obviously if you've got those, distributed termination makes even more 
 sense.

 If you do want a centralized solution, an Adtran TA5006 (the small 
 chassis) with 6x 48 port VDSL2 combo modules (with or without vectoring, 
 depending on your needs) would do the job (though it fills the chassis 
 and doesn't allow for expansion, so the full-size TA5000 may be 
 desirable).  I've played (and am playing with) the same system but with 
 GPON termination and have been happy with it so far.
 -- 
 Brandon Martin
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