see below...
Julian Elischer wrote:
Eli Dart wrote:
Stephen Clark wrote:
So was any decision reached on this issue - will FreeBSD changed
to accept a packet on an interface that is larger than the mtu on
that interface?
If possible, I'd like to see the ability to enforce interface MTU
.
--eli
- --
Eli Dart Office: (510) 486-5629
ESnet Network Engineering Group Fax:(510) 486-6712
Lawrence Berkeley National Laboratory
PGP Key fingerprint = C970 F8D3 CFDD 8FFF 5486 343A 2D31 4478 5F82 B2B3
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?
--eli
$ sysctl -a | grep mtu
net.inet.tcp.path_mtu_discovery: 1
Now if I change the mtu of the gre to 1412 everything works.
Any insight would be appreciated.
Thanks,
Steve
- --
Eli Dart Office: (510) 486-5629
ESnet Network Engineering
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Olivier Nicole wrote:
Hi,
I am facing the following problem: I have a web server with an
application that calls a MySQL server.
For class and test run, I may have 100 users accessing the same web
page to login to the same database.
For
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Hi List,
We've just deployed a new syslog server infrastructure consisting of
two hosts -- one NFS server that has a large disk array attached via
fibre channel and one NFS client that receives syslog messages,
mounts the server's disk, and writes to
noac Suppress data and attribute caching.
:-)
- --
- ---
Eli Dart Office: (510) 495-2999
NERSC Center Networking and Security Group Cell: (510) 703-4508
Lawrence Berkeley National
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Hi all,
We are having trouble getting a polling-enabled kernel to boot. It
gets as far as listing the timecounter values, and then resets twa0
every couple of minutes forever.
The box is 2x3.2GHz Xeons, 4GB RAM, SuperMicro X6DH8-XG2 motherboard
In reply to Julian Elischer [EMAIL PROTECTED] :
I have no control over or access to the link.. all I have is a promise
that they will deliver
14Mb/Sec. with approc 300mSec. RTT to me but there is no promise about
packet order.
My guess is that they are doing round-robin load balancing,
[ ... ]
I then tested with the whole school going through the firewall: very bad.
packets were being droped and ping times were around 600ms. Internet was
pretty much unuseable.
This report sounds consistent, although you could also have a bad cable or
switch port, too. It would be
In reply to Omer Faruk Sen [EMAIL PROTECTED] :
According to the very old article stated
http://www.totse.com/en/technology/computer_technology/162444.html there is
no way to tune time_wait timeout in FreeBSD. But since it is very old
article my question is this:
Is there a way to
In reply to Mike Silbersack [EMAIL PROTECTED] :
On Mon, 11 Oct 2004, Eli Dart wrote:
Is there a way to change the time_wait timeout value in FreeBSD?
sysctl -w net.inet.tcp.msl=milliseconds
The default is 3 (30 seconds).
--eli
That may have other
In reply to Darcy Buskermolen [EMAIL PROTECTED] :
On August 25, 2004 06:44 am, Marko Zec wrote:
On Wednesday 25 August 2004 00:15, Julian Elischer wrote:
You do know don't you, that if you continue to do these things, you will
be punnished by
getting a CVS commit bit..?
Well, I
In reply to Gregory Kuhn [EMAIL PROTECTED] :
Hello,
I have discovered an anomaly (I am sure it was discovered long
ago) when trying to traceroute to my FBSD 4.8 and 4.9 servers. Here are
the details.
Have you set sysctl net.inet.udp.blackhole=1 ?
If so, the FreeBSD box will
In reply to Marc G. Fournier [EMAIL PROTECTED] :
I have 5 servers sitting on a Linksys 10/100 switch ... 4 of the 5 are
running fxp0 ethernet, while the 5th is running em ... and the 5th
performs atrociously:
neptune# netstat -ni | head
NameMtu Network Address
In reply to Brandon Erhart [EMAIL PROTECTED] :
Hello everyone,
However, I have run into a new problem. I am getting a good amount of
blocks stuck in FIN_WAIT_1, FIN_WAIT_2 or LAST_ACK that stick around for a
long while.
Could you define long in this case? Are we talking about 60
In reply to Brandon Erhart [EMAIL PROTECTED] :
Well, I responded to the group that I had taken one of the fellows advice
posting here, and modified the tcp_usrclosed in netinet/tcp_usrreq.c.
I understand that -- I was trying to discover if you'd come across
something that needed a more
In reply to Don Lewis [EMAIL PROTECTED] :
On 28 Jan, Garrett Wollman wrote:
On Wed, 28 Jan 2004 20:49:02 -0500, [EMAIL PROTECTED] said:
Can different MTUs be mixed on the same wire
No.
It's ugly, but I wonder if adding host routes with the -lock -mtu
options might work ...
I
In reply to Andriy Korud [EMAIL PROTECTED] :
Hi,
At last I've managed to build stable NAT on FreeBSD box for 34Mbit link and
~2000 clients (cable modem network).
At full speed (34Mbit) CPU usage is 0% and system load is 0.0 :-)
The solution was to find proper ip_nat.h file and properly
In reply to David Gilbert [EMAIL PROTECTED] :
In our experience, switch to fxp ethernet cards, test several
motherboards and enable polling.
fxp and em cards appear to have the best performance ... outrunning
other cards by a fair margin.
Hmmmwe've been using SysKonnect (older ones --
In reply to Alex (ander Sendzimir) [EMAIL PROTECTED] :
First, I know very little about networking, especially performance
turning. I would really like to learn more but don't know where/how to
start effectively.
Take a look at the tools ttcp, netperf and iperf. They build
straight out of
In reply to Peter J. Blok [EMAIL PROTECTED] :
[snip]
My understanding is that the Giga-bit definition includes large frame support
It doesn't.
and if you claim to have a Giga-bit switch you should support large frames,
unless specifically excluded.
There is no IEEE standard for jumbo
In reply to Eicke [EMAIL PROTECTED] :
Hi folks,
I have two servers in the same network segment and with the same =
hardware.
The First work as a router and second is a DNS, a HTTP, and Postifix =
server.
I realized a test, I tried to copy a 1Gb file from servers to my =
machine.
Look at the man page for ifconfig, and look at the alias option.
--eli
In reply to David Myer [EMAIL PROTECTED] :
Hi,
Can anyone tell me how to set multiple IP addresses
for one interface in UNIX/LINUX ?
Thanks
Dave
__
Do
We maintain our own patches here as well to get around this problem.
IMHO, it is far better to have some applications waste a meg or two
of buffer space than to hamstring any high-performance bpf app that
runs on a FreeBSD box.
This is most likely a trivial code fix -- how hard would it be to
In reply to Jim McGrath [EMAIL PROTECTED] :
Where could I get the errata sheet?
Product Specification Updates i.e. errata, and the Product Specification
itself are available from Intel under a Non Disclosure Agreement. Unless
you work for a company that is doing business with Intel,
that looked obvious, but I'm
perfectly willing to believe I missed it.
So, can this be turned off? Also, what is the timeout on this data
in the kernel?
Thanks!
--eli
Eli Dart
be preventing updates to ssthresh for that route?
Or, am I misinterpreting something?
--eli
In reply to Eli Dart [EMAIL PROTECTED] :
--==_Exmh_1318550241P
Content-Type: text/plain; charset=us-ascii
Hi all,
I'm seeing something strange here... I have a freebsd box
It's actually fairly easy to take the output of netstat -inb and put
it into rrdtool. If you grep Link out of netstat -inb you get in and
out packets and bytes, and you get error counters as well.
My $0.02
--eli
In reply to Larry Sica [EMAIL PROTECTED] :
This is a
The syskonnect 1000baseSX and 1000baseTX cards work quite well as of
4.2-RELEASE (man sk). I can only assume that they continue to be
supported (they are as of 4.4-R.).
If you have existing tigon nics, this won't help you. If you're
looking for stuff to buy, syskonnect cards work fine.
In reply to Bruce A. Mah [EMAIL PROTECTED] :
If memory serves me right, Eli Dart wrote:
In reply to Crist J . Clark [EMAIL PROTECTED] :
On Tue, Jan 22, 2002 at 05:37:07PM -0800, Eli Dart wrote:
[snip]
Note that the igmp queries are sent to the multicast address
224.0.0.1
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