JoPPP

JoPPP

August 30, 2008

We know of PPPoE and POE which are crucial to Wimax implementations that use Alvarian outdoor antennae, but have you ever heard of JoPPP? that's short for Junk over PPP, which is what is passed back and forth over the PPP link when using Lanka Bell WiMax. No wonder it's crawling

listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
19:25:38.846663 IP 192.168.215.138.netbios-dgm > 192.168.215.143.netbios-dgm: NBT UDP PACKET(138)
19:25:48.941528 IP 192.168.215.138.netbios-ns > 192.168.215.143.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
19:25:38.847592 PPPoE  [ses 0x5d5] IP 119.235.2.76.32992 > ns1.slic.lankabellnet.com.domain:  64753+ PTR? 143.215.168.192.in-addr.arpa. (46)
19:25:38.886044 PPPoE  [ses 0x5d5] IP ns1.slic.lankabellnet.com.domain > 119.235.2.76.32992:  64753 NXDomain* 0/1/0 (143)
19:25:39.585971 IP 192.168.215.138.netbios-ns > 192.168.215.143.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
19:25:39.765919 arp who-has 192.168.101.1 tell 192.168.101.58

But that's not the real reason for the slowness. Here is the real reason:

op,timestamp 1978135924 17416466>
19:02:30.483407 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 42000 win 501 
19:02:30.608415 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 42000:43400(1400) ack 1 win 14 
19:02:30.733796 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 43400:44800(1400) ack 1 win 14 
19:02:30.733876 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 44800 win 501 
19:02:30.765116 PPPoE  [ses 0x5d5] IP 119.235.2.76.32977 > ns1.slic.lankabellnet.com.domain:  31605+[|domain]
19:02:30.853791 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 44800:46200(1400) ack 1 win 14 
19:02:30.978106 PPPoE  [ses 0x5d5] IP ns1.slic.lankabellnet.com.domain > 119.235.2.76.32977:  31605 1/1/0 (131)
19:02:30.978337 PPPoE  [ses 0x5d5] IP 119.235.2.76.32977 > ns1.slic.lankabellnet.com.domain:  22516+[|domain]
19:02:30.993324 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 46200:47600(1400) ack 1 win 14 
19:02:30.993403 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 47600 win 501 
19:02:31.113364 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 47600:49000(1400) ack 1 win 14 
19:02:31.238419 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 49000:50400(1400) ack 1 win 14 
19:02:31.238496 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 50400 win 501 
19:02:31.363751 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 50400:51800(1400) ack 1 win 14 
19:02:31.483611 PPPoE  [ses 0x5d5] IP truncated-ip - 256 bytes missing! ns1.slic.lankabellnet.com.domain > 119.235.2.76.32977:  22516 5/7/7[|domain]
19:02:31.484040 PPPoE  [ses 0x5d5] IP 119.235.2.76.42697 > ik-in-f101.google.com.www: S 354522469:354522469(0) win 5808 
19:02:31.518226 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 51800:53200(1400) ack 1 win 14 
19:02:31.518301 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 53200 win 501 
19:02:31.643226 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 53200:54600(1400) ack 1 win 14 
19:02:31.759264 PPPoE  [ses 0x5d5] IP 119.235.2.76.35277 > ug-in-f164.google.com.www: F 310474103:310474103(0) ack 1744444467 win 135 
19:02:31.759330 PPPoE  [ses 0x5d5] IP 119.235.2.76.35279 > ug-in-f164.google.com.www: F 1:1(0) ack 1 win 54 
19:02:31.768711 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 54600:56000(1400) ack 1 win 14 
19:02:31.768789 PPPoE  [ses 0x5d5] IP 119.235.2.76.50493 > nms01.hns.net.in.www: . ack 56000 win 501 
19:02:31.888696 PPPoE  [ses 0x5d5] IP truncated-ip - 1280 bytes missing! nms01.hns.net.in.www > 119.235.2.76.50493: . 56000:57400(1400) ack 1 win 14 
19:02:31.896932 PPPoE  [ses 0x5d5] IP 119.235.2.76.32977 > ns1.s

Now to try to figure out what's causing it. They at Lanka bell simply don't know.

Posted by raditha at August 30, 2008 1:19 PM

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