[pptp-server] Lots of Concurrent PPP interfaces

[Stan A. Rogge]

Yes I saw the discussion in the June 1999 archives.  The 100 limit is the
dev_alloc_name () found in /usr/src/linux/net/core/dev.c

It was hardcoded to 100.  The other limits are apparently straight forward.

Thanks for the point.

----- Original Message -----
From: "knup" <knup at home.com>
To: "poptop" <pptp-server at lists.schulte.org>
Sent: Tuesday, March 07, 2000 5:37 PM
Subject: Re: [pptp-server] Lots of Concurrent PPP interfaces


| i forget where it is, but early on there was a bit of discussinon about
what
| was needed to run poptop with ~2048 connections.. search the first few
| months of the archives.
|
| the pppd numbering thing is just another #define i think
|
| Kevin
|
| ----- Original Message -----
| From: Stan A. Rogge <stan at rogge.net>
| To: poptop <pptp-server at lists.schulte.org>
| Sent: Tuesday, March 07, 2000 2:56 PM
| Subject: [pptp-server] Lots of Concurrent PPP interfaces
|
|
| > Anyone out there ever configured a server for quite a lot of concurrent
| > VPNs?
| >
| > I have managed to get 100 concurrent connections, but pppd will not
build
| an
| > interface beyond ppp99.
| >
| > I get this error:
| >
| > kernel: ppp: dev_alloc_name failed (-23)
| > kernel: ppp: ppp_alloc failed
| > pppd[1722]: ioctl(TIOCSETD): Too many open files in system(23)
| >
| >
| > I have already adjusted a few things in the kernel, like:
| >
| > netlink.h    MAX_LINKS    2048
| > limits.h    NR_OPEN    2048
| > limits.h    OPEN_MAx    1024
| > tty.h    MAX_NR_CONSOLES    2047
| >
| > In the kernel's .config I have:
| >
| > CONFIG_UNIX98_PTYS=y
| > CONFIG_UNIX98_PTY_COUNT=2048
| >
| > I am using linux-2.2.13 with ppp-2.3.8 with the microsoft patches for
| their
| > gay encryption.  My setup works ok.  Been using it all for quite a while
| for
| > both PPTP and SSH VPNs, at least thats my story.
| >
| > My last assigned device to pppd was pts/100.  I have 235 processes on
the
| > box.
| >
| > My target is to see how many concurrent PPP interfaces can be achieved
| > concurrently.  I want around 1300 or so, but am stuck with PPP0 - PPP99.
| >
| > If anyone has been here before, please share your wisdom.  I really have
| not
| > seen any info on this in the traditional documentation.  I have look
| around
| > at some of the code for PPP, but do not see this particular limit.  I
fear
| > it may be ioctl stuff.
| >
| > Thanks in advance.
| >
| >
| >
| >
| >
| >
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