[131743] in North American Network Operators' Group
Re: Token ring? topic hijack: was Re: Mystery open source switching
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Tue Nov 2 16:37:40 2010
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <28B85307-9B78-4F25-80DC-68AD650EDEF6@jarruda.com>
Date: Tue, 2 Nov 2010 16:37:33 -0400
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
X.25 is very useful for non TCP applications, especially in places where =
the infrastructure is less-than-modern.
X.25 used as a layer 2 transport (even though it is not technically a L2 =
protocol, but then neither is ATM) is useful because it has error =
checking.
--=20
TTFN,
patrick
On Nov 2, 2010, at 4:34 PM, Julio Arruda wrote:
> There used to be quite substantial usage of X.25 in Brazil, for a lot =
longer than usual, for POS transactions. x.28 in fact, that would be PAD =
to X.25, may still be the case ? (RENPAC and 3028 come to mind)
>=20
> The management of some Nortel GSM devices also could be done over =
X.25, usually, it would be backhauled over XOT (or in this case, the =
Nortel equivalent) to the management station, from the devices (I'm =
happy to say, I don't remember if from the BSCs, or BTSs).
> Of course, QLLC and running QLLC to LLC (token ring) devices, was the =
cherry on top..SNA on top of X.25, converting to token ring SNA..
>=20
> Somehow, I can't get rid of the nightmares and the waking in the =
middle of the night, thinking about LAPB, and Clear codes and etc., LUs =
and PUs...the horror...the horror..
>=20
>=20
>=20
>=20
> On Nov 2, 2010, at 3:59 PM, Sven Olaf Kamphuis wrote:
>=20
>> doesn't most of SMS (the crap on GSM's) also run on x.25?
>>=20
>> i recall some customer of mine talking X.25 to a telco to get their =
messages to the phones anyway.
>>=20
>> same for one of our banks not so very long ago...
>>=20
>>=20
>> On Tue, 2 Nov 2010, Sven Olaf Kamphuis wrote:
>>=20
>>>> Are there still any commercial X.25 nets in operation? I had some =
peripheral involvement with Tymnet in the MCI/Concert conversion, and =
hear it shut down sometime in 2003-4.
>>>=20
>>> =
http://www.ram.nl/nl/aanbieder_van_mobiele_datacommunicatie/diensten/netwe=
rkdiensten?read_more=3D1323735124421760482
>>>=20
>>> also: yep.
>>>=20
>>> commercial x.25 based packet radio networks, and the wired parts to =
keep them together, are still around.
>>>=20
>>> (the non-commercial ones also ofcourse ;)
>>>=20
>>> --=20
>>> Greetings,
>>>=20
>>> Sven Olaf Kamphuis,
>>> CB3ROB Ltd. & Co. KG
>>> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> Address: Koloniestrasse 34 VAT Tax ID: DE267268209
>>> D-13359 Registration: HRA 42834 B
>>> BERLIN Phone: +31/(0)87-8747479
>>> Germany GSM: +49/(0)152-26410799
>>> RIPE: CBSK1-RIPE e-Mail: sven@cb3rob.net
>>> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> <penpen> C3P0, der elektrische Westerwelle
>>> http://www.facebook.com/cb3rob
>>> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>=20
>>> Confidential: Please be advised that the information contained in =
this
>>> email message, including all attached documents or files, is =
privileged
>>> and confidential and is intended only for the use of the individual =
or
>>> individuals addressed. Any other use, dissemination, distribution or
>>> copying of this communication is strictly prohibited.
>>>=20
>>>=20
>>> On Tue, 2 Nov 2010, Chris Boyd wrote:
>>>=20
>>>> On Nov 1, 2010, at 11:48 AM, Nick Hilliard wrote:
>>>>> And FDDI and X.25 and every single legacy protocol
>>>> Are there still any commercial X.25 nets in operation? I had some =
peripheral involvement with Tymnet in the MCI/Concert conversion, and =
hear it shut down sometime in 2003-4.
>>>> --Chris
>>>=20
>>=20
>=20
>=20
