Re: [fw-wiz] Cisco ASA and FWSM



-----Original Message-----
From: firewall-wizards-bounces@xxxxxxxxxxxxxxxxxxxxxxx
[mailto:firewall-wizards-bounces@xxxxxxxxxxxxxxxxxxxxxxx] On
Behalf Of Timo Schoeler
Sent: Monday, April 30, 2007 15:35
To: Firewall Wizards Security Mailing List
Cc: drsharp@xxxxxxxxxxx
Subject: Re: [fw-wiz] Cisco ASA and FWSM

ASA top model supports (8) gig interfaces, but ether channel
still does not appear to be supported. Not a big deal as the top ASA
only supports up to 1.2gbs throughput.

yeah, and for the ASA-5520 (e.g.) they share one single interrupt.
worst hardware design ever.

Why would that be? Sharing interrupts will result in less context
switches. Different interrupts will result in a context switch for each
interrupt, while shared interrupts can handle multiple interrupts can be
handled in the same context switch. And running their drivers in polling
mode instead of interrupt mode would make this even matter less, which
would make quite some sense in the ASA's case.

// nick
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