Thanks Steve. Saw this mail quite late. I had checked /proc/sys/net/ipv4/ip_no_pmtu_disc earlier, and the value is 0 in that but I am not sure if it works properly. I am using a commercial conformance test suite for IPv4 which have certain PMTU cases. Running it with a windows OS, I can see windows clearing the DF bit and sending a fragmented packet, but it doesn't seem to work with the Linux OSs. I tried Vyatta as well as Redhat FC4.
Warm Regards, Piyush On Wed, Feb 13, 2008 at 11:44 PM, Steven Kath <[EMAIL PROTECTED]> wrote: > > Piyush, > > If I'm not mistaken, the Vyatta system supports Path MTU discovery and > has it enabled by default. > > You should be able to check the current setting with this command at the > bash prompt: > > # cat /proc/sys/net/ipv4/ip_no_pmtu_disc > 0 > > When the output is "0", Path MTU discovery should be functioning. > > To disable it, > # echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc > > And to enable it if it's disabled, > # echo 0 > /proc/sys/net/ipv4/ip_no_pmtu_disc > > > - Steve > > piyush sharma wrote: > > > > Hi, > > Does Vyatta support Path MTU discovery. > > If yes, is there any configuration required for it and how can we > > reset the related parameters to default? > > > > Thanks, > > Piyush >
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