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Date:      Sun, 28 Oct 2001 10:56:42 -0800 (PST)
From:      Julian Elischer <julian@elischer.org>
To:        Trond Davidsen <trond.davidsen@ii.uib.no>
Cc:        freebsd-net@freebsd.org, archie@freesd.org
Subject:   Re: Mpd with a large number, 200+ , of bundles
Message-ID:  <Pine.BSF.4.21.0110281056180.21253-100000@InterJet.elischer.org>
In-Reply-To: <3BD6FA2F.6070509@ii.uib.no>

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Did archie get back to you on this one?


On Wed, 24 Oct 2001, Trond Davidsen wrote:

> Hi,
> some info about the machine:
> 
> vpn-gw2# uname -a
> FreeBSD vpn-gw2 4.4-STABLE FreeBSD 4.4-STABLE #2: Tue Oct 16 16:42:27 
> CEST 2001     root@vpn-gw2:/usr/obj/usr/src/sys/VPN-GW2  i386
> vpn-gw2#
> 
> The machine is a dual 700MHz PIII with 512MB ram and 3 3c905B nics. 
> /etc/sysctl.conf looks like this:
> 
> vpn-gw2# cat /etc/sysctl.conf
> kern.ipc.shm_use_phys=1
> vfs.vmiodirenable=1
> net.inet.tcp.sendspace=65535
> net.inet.tcp.recvspace=65535
> net.inet.tcp.always_keepalive=1
> kern.ipc.somaxconn=1024
> net.inet.ip.rtexpire=10
> 
> 
> I'm trying to set up mpd as a replacement for poptop + ppp.  But I run 
> into a problem when I try to configure more than 100 bundles.  When I 
> configure 30 bundles, everything works nicely.  When I configure 100 
> bundles, things seems to work nicely, but when I run ngctl, I get the 
> following error when typing 'list' at the ngctl prompt:
> 
> 
> [lines for ng100 - ng24 removed]
> 
>    Name: ng23            Type: iface           ID: 00000849   Num hooks: 1
>    Name: <unnamed>       Type: socket          ID: 00000848   Num hooks: 2
>    Name: <unnamed>       Type: vjc             ID: 00000847   Num hooks: 4
>    Name: <unnamed>       Type: bpf             ID: 00000846   Num hooks: 3
>    Name: mpd37379-pptp12 Type: ppp             ID: 00000845   Num hooks: 6
>    Name: ng22            Type: iface           ID: 00000844   Num hooks: 1
>    Name: <unnamed>       Type: socket          ID: 00000843   Num hooks: 2
>    Name: <unnamed>       Type: vjc             ID: 00000842   Num hooks: 4
>    Name: <unnamed>       Type: bpf             ID: 00000841   Num hooks: 3
>    Name: xl0             Type: ether           ID: 00000001   Num hooks: 0
> ngctl: send msg: No such file or directory
> + quit
> 
> it seems to be missing ng0 - ng21, but ifconfig shows all the 
> interfaces.  Earlier ngctl would not list any interfaces but print 
> something like the following:
> 
> + list
> ngctl: send msg: No buffer space available
> + quit
> 
> which buffer is this, and how do I make it larger?
> 
> 
> On a PIII 1.3GHz with 1GB ram, trying to run with 110 bundles:
> 
> vpn-gw3# uname -a
> FreeBSD vpn-gw3 4.4-STABLE FreeBSD 4.4-STABLE #0: Thu Oct 18 18:37:21 
> CEST 2001     root@vpn-gw3:/usr/obj/usr/src/sys/VPN-GW3  i386
> vpn-gw3#
> 
> 
> [cut out 97 bundle configs]
> 
> [pptp98] ppp node is "mpd18285-pptp98"
> [pptp98] using interface ng108
>   Radius: radius_Init
> 
> [pptp99] ppp node is "mpd18285-pptp99"
> [pptp99] using interface ng109
>   Radius: radius_Init
> 
> [pptp100] can't name ppp node: Address already in use
> [pptp100] netgraph initialization failed
> [pptp101] can't name ppp node: Address already in use
> [pptp101] netgraph initialization failed
> [pptp102] can't name ppp node: Address already in use
> [pptp102] netgraph initialization failed
> [pptp103] can't name ppp node: Address already in use
> [pptp103] netgraph initialization failed
> [pptp104] can't name ppp node: Address already in use
> [pptp104] netgraph initialization failed
> [pptp105] can't name ppp node: Address already in use
> [pptp105] netgraph initialization failed
> [pptp106] can't name ppp node: Address already in use
> [pptp106] netgraph initialization failed
> [pptp107] can't name ppp node: Address already in use
> [pptp107] netgraph initialization failed
> [pptp108] can't name ppp node: Address already in use
> [pptp108] netgraph initialization failed
> [pptp109] can't name ppp node: Address already in use
> [pptp109] netgraph initialization failed
> [pptp110] can't name ppp node: Address already in use
> [pptp110] netgraph initialization failed
> [pptp99:pptp99]
> 
> 
> vpn-gw3# ngctl
> + list
> ngctl: send msg: No buffer space available
> +
> 
> This is with standard sendspace/recvspace.
> 
> 
> Trond
> 
> 
> 
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