[157848] in North American Network Operators' Group
Re: Whats so difficult about ISSU
daemon@ATHENA.MIT.EDU (Bryan Fields)
Mon Nov 12 01:40:26 2012
Date: Mon, 12 Nov 2012 01:40:12 -0500
From: Bryan Fields <Bryan@bryanfields.net>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <CALb2afMRykjAP5SXD_R-dr_Cj4UMmy3E=FUuOe_M8HPGJ_Mm4g@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 11/12/12 1:21 AM, Kasper Adel wrote:
> Is it because C5 softswitches have expensive hardware, advanced software
> and dual asics? I would have never imagined that any vendor is capable of
> upgrading fpd's/ASICs ucode without a hit unless there are multiple chips
> continuously syncing with each other.
And they only have to process maybe 2mbit/s of control traffic during busy
hour. The rest is handled by dedicated hardware/ASIC's. Each one has a fully
redundant hardware circuit pack and a bunch of monitoring to switch over in
case one fails.
Even then, it's fun when some one screws up and reboots it :)
--
Bryan Fields
727-409-1194 - Voice
727-214-2508 - Fax
http://bryanfields.net
