Apple OS X SMB issues across VPN
David Collier-Brown
David.Collier-Brown at Sun.COM
Wed Dec 7 18:26:05 GMT 2005
Well, one thing jumps out at me: the OSX file is chock
full of bad checksums, which cause retransmissions. To
be fair, the rh7 data has a lot of duplicate acks
packets errors warnings
OSX 6006 3603 59% 73 1.2%
RH7 17902 0 0% 232 1.3%
It rather looks like something on the path from
the client to the OSX machine is causing checksum
errors. This can be the NIC card in the machine,
a hub or router port or anything else in the
path between the two machines.
--dave
Christopher R. Hertel wrote:
> I haven't had a chance to look yet. Sorry. Soon...
>
> Chris -)-----
>
> On Mon, Dec 05, 2005 at 08:42:51AM -0500, David Collier-Brown wrote:
>
>> Just a status: looking at these in ethereal and snoop shows
>>a distinct sloth pattern, probably a three-toed (;-))
>>I've not drilled down further as yet...
>>
>>Christopher R. Hertel wrote:
>>
>>>On Thu, Dec 01, 2005 at 09:42:33AM -0700, Dan Tappin wrote:
>>>
>>>
>>>>Hi Chris,
>>>>
>>>>I'm back...
>>>>
>>>>I have my test RH 7 server up and running on the local LAN ready to
>>>>test across the VPN. One issue though:
>>>>
>>>>[root at localhost admin]# tcpdump -i eth0 -s0 -w capture.cap host
>>>>192.168.0.150 and 192.168.2.46
>>>>tcpdump: invalid snaplen 0
>>>>
>>>>-s1 seems to work but not sure if this effects the data.
>>>
>>>
>>>The snap length (set via -s) determines how many bytes worth of each
>>>packet is actually captured. A snaplen setting of zero is *supposed* to
>>>mean "all of it". That is, it's supposed to tell tcpdump that it should
>>>write each packet in its entirety to the capture file.
>>>
>>>I've used some older versions of tcpdump that don't accept a zero value
>>>for that parameter, so I figure that's the problem you've got. The
>>>work-around is to use a value like 2000, which is larger than the maximum
>>>size of an Ethernet frame (assuming you're not using jumbo frames).
>>>
>>>Lemme know if that works. :)
>>>
>>>Chris -)-----
>>>
>>
>>--
>>David Collier-Brown, | Always do right. This will gratify
>>Sun Microsystems, Toronto | some people and astonish the rest
>>davecb at canada.sun.com | -- Mark Twain
>>(416) 263-5733 (x65733) |
>
>
--
David Collier-Brown, | Always do right. This will gratify
Sun Microsystems, Toronto | some people and astonish the rest
davecb at canada.sun.com | -- Mark Twain
(416) 263-5733 (x65733) |
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