[Soekris] Software Routing/Firewall/VPN Performance and Feasibility

Joel Jaeggli joelja at darkwing.uoregon.edu
Tue Apr 27 17:35:21 UTC 2004


On Tue, 27 Apr 2004, Henry Spencer wrote:

> On Wed, 21 Apr 2004, J Baber wrote:
> > 2.  Does a device like a low-end Cisco router use an embedded OS (like Linux 
> > or *BSD), or does it use firmware (i.e. is it all "system-in-a-chip" based)?
> 
> Low-end routers are all completely software-based.  They have little or no
> hardware assist -- like the Soekris boxes, the one area where you *might*
> see hardware assist is for encryption support. 
> 
> What they may have, however, is specialized, carefully-tuned software.  No
> reason why you couldn't do that on a Soekris, mind you, but it might not
> yet exist (as freeware, at least). 

Forwarding, in linux at least, is a task handled by the kernel which 
actually does a pretty good job. populating your routing table is a job 
for userspace daemons and they may be of somewhat variable quality.

In response to the orignal question firmware is software in rom or more 
likely in flash. all things I've seen called routers run some kind of 
operating system.

>                                                           Henry Spencer
>                                                        henry at spsystems.net
> 
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Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu    
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