Have you tried setting MTU on the fileserver command line instead?
That's what we've done, for the same reason. It has worked, and we
don't have to fiddle with each client. The negotiation between AFS
client and fileserver for MTU size is "fileserver wins."
Kim Kimball
Douglas E. Engert wrote:
We are having problems with Mac OS 10.4 and 10.5 using Cisco VPN
AFS can become unusable. Mac 10.4 is running OpenAFS 1.4.8 for sure.
I think the Mac 10.5 is running OpenAFS 1.5.59.
Using rxdebug and looking at the natMTU parameter, on most Unix systems
this is 1444,(1500 - 56) as expected. On Windows systems this is usually
1260. And on MAC it is 1444.
Even if I set the interface mtu 1244, and reboot the MAC, rxdebug shows
the interface is using 1244 but rxdebug continues to show a natMTU =
1444.
as though it still assumed the mtu was 1500.
So it looks like the MAC client is not getting the existingMTU
from the OS in util/netutils.c
The AFS client on Windows has the RxMaxMTU (1244 appears to be the best
setting). Is there any equivelent option for the MAC?
Any thoughts on this?
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