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fullness Time's List: DSL-300T Connection problems and Settings

  • MTU

  • D-Link DSL-300T ADSL Modem - 지원 포럼 - eXpansys Korea

    • DSL300T in half bridge mode straight into a linux box has the same problem. It
      seems to be related to the number of connections thru the modem rather than
      time, it will crash in under 15 mins when acting as a gnutella ultrapeer for 40
      or 50 leaf nodes, or about 30 minutes surfing thumbnail galleries, but will stay
      up for 2-3 days running only irc

      Pulling the power cable is faster than
      hitting the reset switch, as it doesn't mean reconfiguring the modem every time,
      but other than that I don't have a solution. Posting here in the hope someone
      else solves the problem.

      --Dave
    • yeap, like an emule session too.. it will get accessible after a while if you
      close down what is doing all the traffic
      but just telnet into the linux shell
      and do

      echo "32752" >
      /proc/sys/net/ipv4/netfilter/ip_conntrack_max

      that should
      help..

      Also remember this is a fully functional Linux busybox with
      iptables.. I login and paste an iptables script when I boot the modem.

      I
      add routes, clear the iptables and setup NAT and DNAT, here's my script with
      public ip's XXX'ed
  • G-node and BitTorrent - Other broadband

    • I didn't see much diff between 1500 and 1400


      Are you connected directly to your router/modem? It's possible
      that your internal LAN supports higher MTU values and packets get fragmented
      once it reaches your router/modem. In which case this is a LAN (not WAN) related
      MTU setting.

      The reason you don't see a difference between 1500 and 1400
      is because your internal LAN is handling all the fragmentation.

      I do also
      recall Jenny from G-node posting earlier to use 1472 MTU
      setting.

      Hopefully users can differentiate from internal LAN MTU's (which
      can be higher); and external WAN MTU's (which are limited by PPPoA and PPPoE).
      Remember it's:
    • Not all routers have all these settings mine only has the MTU setting and the
      others are auto set from the MTU.
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