[122563] in North American Network Operators' Group
RE: BIRD vs Quagga
daemon@ATHENA.MIT.EDU (Tomas L. Byrnes)
Tue Feb 16 23:16:08 2010
Date: Tue, 16 Feb 2010 20:15:41 -0800
In-Reply-To: <m2mxz8bjne.wl%randy@psg.com>
From: "Tomas L. Byrnes" <tomb@byrneit.net>
To: "Randy Bush" <randy@psg.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Good point regarding non-congruence not necessarily meaning =
non-separation, and touch=E9 on margins (by which I presume you mean SS7 =
has massive overprovisionining for average traffic).=20
However, the fact remains, it has proven itself to work for a lot =
longer, and a for much larger subscriber base, with far fewer systemic =
failures (especially on a per subscriber/expected availability basis), =
than the current Internet.
I notice you didn't answer my request for the peer reviewed literature =
to support your assertion.
To support mine I give (there are hundreds in the literature):
Gopel (Nokia): HSN and Multimedia Apps, 5th Conf, IEEE, 2002: Print =
ISBN: 0-7803-7600-5 PP 161-166
Ramjee et al (Lucent Bell Labs): Comsware 2006: Print ISBN: =
0-7803-9575-1 PP 1-10
Khalios et al (City College of NY): IEEE Globecom 2003: Print ISBN: =
0-7803-7974-8 PP 3984-3989
Never mind all of Shannon's work and everything bell labs did in =
developing digital switching.
You can always have control traffic follow the same path in a different =
channel, so you get the same effect of physical interruption, and =
therefore the topography alerting of an interrupted link, without the =
issues of pathological traffic in the bearer channel interrupting your =
control traffic (as with ISDN subscriber trunks).
> -----Original Message-----
> From: Randy Bush [mailto:randy@psg.com]
> Sent: Tuesday, February 16, 2010 7:56 PM
> To: Tomas L. Byrnes
> Cc: Nick Hilliard; NANOG list
> Subject: Re: BIRD vs Quagga
>=20
> > As in SS7, which has successfully managed the phone system for
> > decades, where the control and data plane are explicitly separated?
>=20
> and has such wonderful margins
>=20
> and, btw, separation is not necessarily non-congruence
