Messages in this thread | | | Date | Sat, 24 Sep 2005 13:30:10 -0400 | From | Bill Davidsen <> | Subject | Re: The system works (2.6.14-rc2): functional k8n-dl |
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Nishanth Aravamudan wrote:
>On 23.09.2005 [13:43:26 -0400], Bill Davidsen wrote: > > >>Nishanth Aravamudan wrote: >> >> >> >>>On 22.09.2005 [15:19:05 -0400], Bill Davidsen wrote: >>> >>> >>> >>> >>>>Nishanth Aravamudan wrote: >>>> >>>> >>>> >>>> >>>>>Hello all, >>>>> >>>>> >>>>> >>>>> >>><snip my long mail> >>> >>> >>> >>> >>> >>>>>code in such a solid state. I have had only one complaint so far: it >>>>>seems that the the "Broadcom Corporation NetXtreme BCM5751 Gigabit >>>>>Ethernet PCI Express" adapter, with the tg3 driver, downs and ups the >>>>>iface on MTU changes. Unfortunately, with some VPN software I use, it is >>>>>sometimes necessary to drop the MTU to 1300 or so to get consistent >>>>>connections. When I do this, though, ssh through the tunnel tends to not >>>>>function. I have a workaround, where I bounce over a different laptop, >>>>>but that's a bit of a pain (and that network adapter seems to be able to >>>>>transiently change the MTU). Not a big deal, in any case. >>>>> >>>>> >>>>> >>>>> >>>>You can (or could in 2.4) sometimes play with the size for an individual >>>>IP by using the "mss" option of the old "route" command. That shouldn't >>>>glitch anything, it just should use little packets. >>>> >>>> >>>> >>>> >>>Yes, I see that still being an option. Let me go learn how to use route >>>and see if that works better. >>> >>> >>> >>> >>route <destination_IP> gw <default_router_IP> mss 1200 >> >> > >Thanks, that works for setting the mss, but when setting it to 1200, i >can't even ping the remote host. I can ping it if remove the mss change. >I can even ssh to it. It just so happens that when I try to ls a large >directory, the connection tends to hang. Any other ideas? Or tracing I >can do to figure it out? >
tcpdump is your friend, and I just gave 1200 as an example, set it as large as you can without hitting the original problem. Then check what's actually happening with tcpdump if it doesn't work.
-- bill davidsen <davidsen@tmr.com> CTO TMR Associates, Inc Doing interesting things with small computers since 1979
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