Date: Sun, 13 May 2007 16:15:08 +0100 From: "Martin Hepworth" <maxsec@gmail.com> To: "Craig Russell" <crussell_1969@yahoo.com> Cc: freebsd <freebsd-questions@freebsd.org> Subject: Re: Wierd Network problem Message-ID: <72cf361e0705130815o32094919kc754697b9f877638@mail.gmail.com> In-Reply-To: <20070512174104.74533.qmail@web51601.mail.re2.yahoo.com> References: <20070512174104.74533.qmail@web51601.mail.re2.yahoo.com>
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Criag have you tried cables? Could be a duff network cable or even speed mismatch between you and the router/switch. - martin On 5/12/07, Craig Russell <crussell_1969@yahoo.com> wrote: > > I have a dell poweredge 6650 installed with freebsd > 6.1 and on the local router, everything works great > (ie, a computer on a different subnet off the same > router can access it fine) but coming from outside of > the network access is incredibly slow. My first > thought was that it must be a routing issue, but I > have two other freebsd 6.1 servers on that same subnet > and I can access them fine from outside. I dug a > little further and compared the servers that are > working with those that are not and these are the > differences that I have found. > > On the servers that are working (dell poweredge > 2450's) the interface is an fxp0 and here is the > output of ifconfig: > fxp0: > flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu > 1500 > options=8<VLAN_MTU> > inet6 fe80::2b0:d0ff:fee1:f66a%fxp0 prefixlen 64 > scopeid 0x1 > inet 64.25.218.2 netmask 0xffffff80 broadcast > 64.25.218.127 > ether 00:b0:d0:e1:f6:6a > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > > on the server that is not working: > > bge0: > flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu > 1500 > options=1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING> > inet6 fe80::211:43ff:fedc:9aa2%bge0 prefixlen 64 > scopeid 0x1 > inet 64.25.218.10 netmask 0xffffff80 broadcast > 64.25.218.127 > ether 00:11:43:dc:9a:a2 > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > > The first thing that i noticed is that on the option > line there is quite a bit of difference between the > two. So using the command line ifconfig tool I > removed RXCSUM, TXCSUM from the bge0 interface. > Voila! Speed increased and the server was actually > accessible from off net. Unfortunately, as soon as I > tried to access any other port, the interface crashes. > Eventually the watchdog picks up on that and restarts > the interface. But the problem is completely > repeatable. > > The server that I am having problems with is running > cpanel 10.9; the two that are working are running the > dns-only version of cpanel. I am not picking up any > errors in the logs. This could be related to cpanel, > or not, I'm not really sure, although it shouldn't be. > > The other unique thing about the setup, that very well > may be affecting is that the router in question has > two subnets configured on the internal port. There is > a nat'd subnet for our local users and there is the > public subnet that these servers sit on. The final > resting place for all three is in a datacenter that > isn't built yet, so rather than reconfigure everything > once that was done I simply routed the final subnet to > our office and set it up their. The router is a > mikrotik RB112 board which only has one ethernet port > so I couldn't dedicate a port for the new subnet. As > I said, my first thought was that the problem was in > the router, but the other two servers are running > fine. > > Any suggestions? > > Thank you, > Craig Russell > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >
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