Date: Wed, 19 May 1999 13:16:54 +0930 From: Greg Lehey <grog@lemis.com> To: Tim Pushor <timp@orion.ab.ca> Cc: questions@FreeBSD.ORG Subject: Re: Number of TUN devices Message-ID: <19990519131654.U89091@freebie.lemis.com> In-Reply-To: <002901bea265$bf30de00$9801a8c0@blackthorn.com>; from Tim Pushor on Wed, May 19, 1999 at 08:09:09PM -0600
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[Format recovered--see http://www.lemis.com/email/email-format.html] On Wednesday, 19 May 1999 at 20:09:09 -0600, Tim Pushor wrote: > On Tuesday, May 18, 1999 5:47 PM, Greg Lehey <grog@lemis.com> wrote: >> On Tuesday, 18 May 1999 at 12:31:44 -0600, Tim Pushor wrote: >>> Hello, >>> >>> Does anyone know how man tun devices I can run in the 3.x kernels? >>> I would like to run LOTS (as many as possible), so even if I had >>> to potentially modify the kernel... >> >> I don't know of any hard limit. Have you tried it? > > No, I havn't tried. > > Just because the kernel config may take a high number doesn't necessarily > mean it will work properly :) and I don't have the resources to test a high > number of TUN devices quite yet. > > I imagine I would have to tweak other configuration items to ensure proper > buffers, etc. Just hoping someone would have done it before and relay their > experience.. It depends entirely on what you're doing with all these tun devices, and you haven't divulged that. If it's (user) PPP, I don't think you'll have many problems. It would take a lot of tun connections to make the bandwidth of a 100 Mb/s Ethernet. If you're using it as a form of interprocess communication, things might look different. Any unusual application has the potential to expose configuration weaknesses, but you won't know until you try. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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