Wingate Crashing Part 2

[breese]

This is a continue from viewtopic.php?f=12&t=39985

I verified my minidup setup. Each time there has been a lockup, there is no minidump file.
I will assume this is because the OS (W2K3 Server) never gets the chance to write the file because the system just stops to function.
I am including another Performace log file.
Area's like Wingate and or gateKeeper IO reads and writes and other area's are off the chart in these graph's.
My hardware all checks out. This is the 3rd complete system I have built to Find This Issue.

One intresting note:
Anyone within my network visiting the site listed below WILL crash / halt / make the wingate server un-responsive.
I have tested this 3 times in 30 minutes.
http://roger.lisaandroger.com/

Now if some developer can tell me exactly what to look for and or log... I will

[adrien]

Hi

I checked that site. Worked fine from here.

which makes me wonder if there is something about your link that might be contributing. E.g. MTU?

Have you done an MTU test on your link?

I presume all the 3 machines you tested with went through the same connection?

To determine MTU, use ping from the command line, e.g.

ping smtp.qbik.com -n 1 -f -l XXXX

XXXX being the size of the ping packet. The max of this size + 28 (size of IP + ICMP header) is your MTU. Normal MTU is 1500, so normally the max size you can put in is 1472 before you get reports of fragmentation required. If you don't get reports of fragmentation required (e.g. ping just times out), you have a bad router (black hole).

[breese]

Pinging smtp.qbik.com [210.55.214.35] with 1444 bytes of data:
Reply from 210.55.214.35: bytes=1444 time=214ms TTL=118
Ping statistics for 210.55.214.35:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 214ms, Maximum = 214ms, Average = 214ms



Pinging smtp.qbik.com [210.55.214.35] with 1472 bytes of data:
Packet needs to be fragmented but DF set.
Ping statistics for 210.55.214.35:
Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),

[adrien]

OK.. might be getting somewhere here.

What is the biggest number you can ping with?

Once you have that, add 28 and that's your MTU. You can then set the adapter MTU for your internet-side LAN adapter to the same number.

[adrien]

or perhaps that adapter MTU is already set?

Normally if the router reports that fragmentation is required, you get the IP of the router that reports it. The message you got makes it look like the adapter MTU is already set lower than 1500.

[breese]

I retested and found I needed 1480 and made the change to the Internet card.

1. Your Tweakable SettingsReceive Window (RWIN): 65535
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1440
TTL: unknown
TTL remaining: 116
TOS flags: none set

2. Test DownloadActual data bytes sent: 1024001
Actual data packets: 713
Max packet sent (MTU): 1480
Max packet recd (MTU): 1480
Retransmitted packets: 0
sacks you sent: 0
pushed data pkts: 35
data transmit time: 1.911 secs
our max idletime: 233.9 ms
transfer rate: 460061 bytes/sec
transfer rate: 3680 kbits/sec
transfer efficiency: 100%

With the change I did a speed test (before and after)
started download at 5085
Ended download at 5190

Will continue to test

[adrien]

ok, so there's something that's chewing 20 bytes overhead per packet.

What sort of internet connection do you have? PPPoE / PPPoA?

Regards

Adrien

[breese]

pppoe but
It crashed again.

try this

http://roger.lisaandroger.com/
Once on that site, look for a link to
http://lisaandroger.com/ (far right at bottom corner( Out Main Home Page))
From there Click on
Genealogy (right menu)
Say by by

I am one of the conversions from Winproxy.
I have to say I never had an issue with Winproxy that halted my servers.

I have a complete log from my DSL modem if you want it.

I also did a speed test from within my LAN on a portable thats connected thru a 56M Wireless card
Download Speed: 5099
Upload Speed: 620

DSL modem info
Connected at 6016 Kbps (downstream)
768 Kbps (upstream)
Mode PPP on the computer, gateway or router
Modem Information
Modem Name SpeedStream
Model 5100
Serial Number 2000B23C76FB7
Software Version 1.0.0.53
MAC Address 00:0B:23:C7:6F:B7
First Use Date 2005/02/05 13:02:37 GMT
Local Network
Modem IP Address 192.168.0.1
Ethernet Status Connected


How do I pm or email you?

I do not believe the problem is TCP but and willing to help rule it out
(I think I just did that)

[adrien]

Hi

Just sent you an email.

Adrien