problems with networking...

[Bill Moran]

[Please keep the mailing list in the CC]

"Michael Hawkins" <cypheros at gmail.com> wrote:
>
> Certainly.  Here it is:
> #ifconfig -a
> vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet 10.11.12.253 netmask 0xffffff00 broadcast 10.11.12.254

That's really strange.  Your broadcast address should be
10.11.12.255.  It's quite likely that this is part of your
problem, but I can't imagine how you could have arrived at
this configuration.  What is in /etc/rc.conf?

> ether [MAC ADDRESS REMOVED]
> media: Ethernet autoselect (100baseTX <full-duplex>)
> statusL active
> plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
> inet6 ::1 prefixlen 128
> inet 127.0.0.1 netmask 0xff000000
> 
> 
> #netstat -m
> 65/205/270 mbufs in use (current/cache/total)
> 64/134/198/25600 mbuf clusters in use (current/cache/total/max)
> 0/128 mbuf+clusters out of packet secondary zone in use (current/cache)
> 0/0/0/0 4k (page size) jumbo clisters in use (current/cache/total/max)
> 0/0/0/0 9k jumbo clusters in use (current/cache/total/max)0/0/0/0 16k jumbo
> clusters in use (current/cache/total/max)
> 144k/319k/463k bytes allocated to network (current/cache/total)
> 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
> 0/0/0 requests for jumbo clusters denied (4k/9k/16k)
> 0/4/6656 sfbufs in use (current/peak/max)
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 0 requests for I/O initiated by sendfile
> 0 calls to protocol drain routines

That's netstat -rn, not -m.  Unfortunately, the -m doesn't tell me
what I'm looking for, which is your routing table.

I'm wondering if your ipnat rules are awry.  Please provide the
ifconfig, routing table, and nat rules from the router machine.

> ...again, this is straight out of a fresh install (which I did because I had
> the exact same problem with the last install).

Well, obviously, you did it the same both times, and are getting the
same result.

> On 8/18/07, Bill Moran <wmoran at collaborativefusion.com> wrote:
> >
> > "Michael Hawkins" <cypheros at gmail.com> wrote:
> > >
> > > Sorry if this is sorta n00bish, but I have a problem that Google hasn't
> > > answered for me yet...
> > > I have a moderately-sized network that I am trying to run, with about 70
> > or
> > > so machines on it.  The DHCP server (running FreeBSD 6.2, IPv4 address:
> > > 10.11.12.254, Subnet is 10.11.12.0/24) acts as a gateway server as well,
> > and
> > > has ipnat running for traffic routing.
> > >
> > > So far, I have had no problems with ANY of the machines on this network
> > > connecting, save one--my File server (running FreeBSD 6.2 as well, IPv4
> > > address: 10.11.12.253).  For some reason, whenever I try to establish
> > any
> > > connection to ANY network address (on any protocol), it will only
> > connect to
> > > one address: 10.11.12.252 (and won't connect to anything when that
> > machine
> > > is off).
> > > Here is a ping listing:
> > > #ping 10.11.12.254
> > > PING 10.11.12.254 (10.11.12.254): 56 data bytes
> > > 64 bytes from 10.11.12.252: icmp_seq=0 ttl=64 time=0.852 ms
> > >
> > >
> > > ...and it continues precisely in that manner until I stop it.
> > >
> > > I have tried re-installing the OS on the file server, but with no change
> > in
> > > results.  I have removed the machine at 10.11.12.252 with the only
> > change
> > > being that the file-server can obtain NO connection to ANY IP address.
> > >
> > > Any help would be appreciated.
> >
> > Why don't your cut/paste the output of ifconfig -a and netstat -rn
> >
> > I suspect your network settings are incorrect.
> >
> > --
> > Bill Moran
> > Collaborative Fusion Inc.
> >
> > wmoran at collaborativefusion.com
> > Phone: 412-422-3463x4023
> >
> >
> 
> 
> 
> 
> 
> 
> 


-- 
Bill Moran
Collaborative Fusion Inc.

wmoran at collaborativefusion.com
Phone: 412-422-3463x4023

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