nanog mailing list archives
Re: Whats so difficult about ISSU
From: Bryan Fields <Bryan () bryanfields net>
Date: Mon, 12 Nov 2012 01:40:12 -0500
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
Current thread:
- Re: Whats so difficult about ISSU, (continued)
- Re: Whats so difficult about ISSU Randy Bush (Nov 11)
- Re: Whats so difficult about ISSU Phil Regnauld (Nov 11)
- Re: Whats so difficult about ISSU Joe Greco (Nov 11)
- Re: Whats so difficult about ISSU Felipe Zanchet Grazziotin (Nov 11)
- Re: Whats so difficult about ISSU Gary Buhrmaster (Nov 11)
- Re: Whats so difficult about ISSU Gary Buhrmaster (Nov 11)
- Re: Whats so difficult about ISSU Miquel van Smoorenburg (Nov 11)
- Re: Whats so difficult about ISSU Jimmy Hess (Nov 11)
- Re: Whats so difficult about ISSU Kasper Adel (Nov 11)
- Re: Whats so difficult about ISSU Bryan Fields (Nov 11)
- Re: Whats so difficult about ISSU Mikael Abrahamsson (Nov 11)
- Re: Whats so difficult about ISSU Tim Jackson (Nov 12)
- RE: Whats so difficult about ISSU Frank Bulk (Nov 12)