Linux-Hams archive - October 1997: telnet is PAINFULLY slow...

telnet is PAINFULLY slow...

Pete Rossi WA3NNA (kfyguop@ifxnw.cl)
Tue, 30 Sep 1997 22:57:24 -0400

Recently started testing telnet connections to local station on 2 meter
1200 baud path and it is PAINFULLY slow... to the point where something
has got to be wrong.... or to the point where it is virtually unusable.

Channel activity is very low.. so that is not the problem and we have
a good RF path. Regular AX.25 connections are reasonable speed as one
would expect for 1200 baud.

Is all of the additional TCP/IP overhead causing such slow response?

We are both running Linux 2.0.30 w/AX.25

When monitoring the channel using "listen" there seems to be a awful lot
of overhead traffic.. and it transmits commands over only a few characters
at a time... almost as if it is trying to transmit every keystroke as
a packet.. and at 1200 baud.. this kind of handshaking can take forever..

Here is the output from 'listen -t -h a' to establish a telnet session and
get a login prompt.. Can someone help me determine if this is normal
or is there a problem...

[Tue Sep 30 22:42:41 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 44 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: 8326->telnet Seq x2036760a SYN Wnd 512 MSS 472

[Tue Sep 30 22:42:44 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 44 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: 8326->telnet Seq x2036760a SYN Wnd 31744 MSS 472

[Tue Sep 30 22:42:49 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 44 44.80.12.28->44.80.12.133 ihl 20 ttl 64 prot TCP
TCP: telnet->8326 Seq xcee724fb Ack x2036760b ACK SYN Wnd 31744 MSS 216

[Tue Sep 30 22:42:49 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036760b Ack xcee724fc ACK Wnd 31744

[Tue Sep 30 22:42:49 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 67 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036760b Ack xcee724fc ACK PSH Wnd 31744 Data 27
0000 FF FD 03 FF FB 18 FF FB 1F FF FB 20 FF FB 21 FF | ÿý.ÿû.ÿû.ÿû ÿû!ÿ
0010 FB 22 FF FB 27 FF FD 05 FF FB 23 | û"ÿû'ÿý.ÿû#

[Tue Sep 30 22:42:51 1997]
Port radio: AX25: [invalid]->G8WA-3 <I S0 R0> pid=0x0 [DAMA]
0000 28 D5 9D 40 00 40 06 F3 F1 2C 50 0C 85 2C 50 0C | (Õ.@.@.óñ,P..,P.
0010 1C 20 86 00 17 20 36 76 0B CE E7 24 FC 50 10 7C | . ... 6v.Îç$üP.|
0020 00 17 D1 00 00 | ..Ñ..

[Tue Sep 30 22:42:52 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 67 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036760b Ack xcee724fc ACK PSH Wnd 31744 Data 27
0000 FF FD 03 FF FB 18 FF FB 1F FF FB 20 FF FB 21 FF | ÿý.ÿû.ÿû.ÿû ÿû!ÿ
0010 FB 22 FF FB 27 FF FD 05 FF FB 23 | û"ÿû'ÿý.ÿû#

[Tue Sep 30 22:42:53 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee724fc Ack x20367626 ACK Wnd 31744

[Tue Sep 30 22:42:53 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 44 44.80.12.28->44.80.12.133 ihl 20 ttl 64 prot TCP
TCP: 1128->auth Seq xab971617 SYN Wnd 512 MSS 216

[Tue Sep 30 22:42:53 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 44 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: auth->1128 Seq x582d51b8 Ack xab971618 ACK SYN Wnd 31744 MSS 216

[Tue Sep 30 22:42:56 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 44 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: auth->1128 Seq x582d51b8 Ack xab971618 ACK SYN Wnd 31744 MSS 216

[Tue Sep 30 22:42:56 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 44 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: auth->1128 Seq x582d51b8 Ack xab971618 ACK SYN Wnd 31744 MSS 216

[Tue Sep 30 22:42:58 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: 1128->auth Seq xab971618 Ack x582d51b9 ACK Wnd 31744

[Tue Sep 30 22:42:59 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 49 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: 1128->auth Seq xab971618 Ack x582d51b9 ACK PSH Wnd 31744 Data 9
0000 38 33 32 36 2C 32 33 0D 0A | 8326,23..

[Tue Sep 30 22:42:59 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 74 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: auth->1128 Seq x582d51b9 Ack xab971621 ACK PSH Wnd 31744 Data 34
0000 38 33 32 36 20 2C 20 32 33 20 3A 20 55 53 45 52 | 8326 , 23 : USER
0010 49 44 20 3A 20 55 4E 49 58 20 3A 20 70 65 74 65 | ID : UNIX : pete
0020 0D 0A | ..

[Tue Sep 30 22:42:59 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 prot TCP
TCP: auth->1128 Seq x582d51db Ack xab971621 ACK FIN Wnd 31744

[Tue Sep 30 22:42:59 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: 1128->auth Seq xab971621 Ack x582d51b9 ACK Wnd 31744

[Tue Sep 30 22:43:01 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 49 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: 1128->auth Seq xab971618 Ack x582d51b9 ACK PSH Wnd 31744 Data 9
0000 38 33 32 36 2C 32 33 0D 0A | 8326,23..

[Tue Sep 30 22:43:01 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: auth->1128 Seq x582d51dc Ack xab971621 ACK Wnd 31744

[Tue Sep 30 22:43:02 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 74 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: auth->1128 Seq x582d51b9 Ack xab971621 ACK PSH Wnd 31744 Data 34
0000 38 33 32 36 20 2C 20 32 33 20 3A 20 55 53 45 52 | 8326 , 23 : USER
0010 49 44 20 3A 20 55 4E 49 58 20 3A 20 70 65 74 65 | ID : UNIX : pete
0020 0D 0A | ..

[Tue Sep 30 22:43:05 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 prot TCP
TCP: 1128->auth Seq xab971621 Ack x582d51b9 ACK FIN Wnd 31744

[Tue Sep 30 22:43:05 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: auth->1128 Seq x582d51dc Ack xab971622 ACK Wnd 31744

[Tue Sep 30 22:43:06 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 52 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee724fc Ack x20367626 ACK PSH Wnd 31744 Data 12
0000 FF FD 18 FF FD 20 FF FD 23 FF FD 27 | ÿý.ÿý ÿý#ÿý'

[Tue Sep 30 22:43:06 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee72508 ACK Wnd 31744

[Tue Sep 30 22:43:06 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: 1128->auth Seq xab971622 Ack x582d51b9 ACK Wnd 31744

[Tue Sep 30 22:43:07 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 255 prot TCP
TCP: 1128->auth Seq xab971621 RST Wnd 0

[Tue Sep 30 22:43:07 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 52 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee724fc Ack x20367626 ACK PSH Wnd 31744 Data 12
0000 FF FD 18 FF FD 20 FF FD 23 FF FD 27 | ÿý.ÿý ÿý#ÿý'

[Tue Sep 30 22:43:07 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee72508 ACK Wnd 31744

[Tue Sep 30 22:43:08 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 74 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: auth->1128 Seq x582d51b9 Ack xab971622 ACK PSH Wnd 31744 Data 34
0000 38 33 32 36 20 2C 20 32 33 20 3A 20 55 53 45 52 | 8326 , 23 : USER
0010 49 44 20 3A 20 55 4E 49 58 20 3A 20 70 65 74 65 | ID : UNIX : pete
0020 0D 0A | ..

[Tue Sep 30 22:43:08 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee72508 ACK Wnd 31744

[Tue Sep 30 22:43:11 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 255 prot TCP
TCP: 1128->auth Seq xab971622 RST Wnd 0

[Tue Sep 30 22:43:12 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 79 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee72508 Ack x20367626 ACK PSH Wnd 31744 Data 39
0000 FF FB 03 FF FD 1F FF FD 21 FF FE 22 FF FB 05 FF | ÿû.ÿý.ÿý!ÿþ"ÿû.ÿ
0010 FA 20 01 FF F0 FF FA 23 01 FF F0 FF FA 27 01 FF | ú .ÿðÿú#.ÿðÿú'.ÿ
0020 F0 FF FA 18 01 FF F0 | ðÿú..ÿð

[Tue Sep 30 22:43:12 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 112 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee7252f ACK PSH Wnd 31744 Data 72
0000 FF FA 1F 00 50 00 3C FF F0 FF FA 20 00 39 36 30 | ÿú..P.<ÿðÿú .960
0010 30 2C 39 36 30 30 FF F0 FF FA 23 00 70 65 74 65 | 0,9600ÿðÿú#.pete
0020 3A 30 2E 30 FF F0 FF FA 27 00 00 44 49 53 50 4C | :0.0ÿðÿú'..DISPL
0030 41 59 01 70 65 74 65 3A 30 2E 30 FF F0 FF FA 18 | AY.pete:0.0ÿðÿú.
0040 00 58 54 45 52 4D FF F0 | .XTERMÿð

[Tue Sep 30 22:43:12 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 255 prot TCP
TCP: 1128->auth Seq xab971622 RST Wnd 0

[Tue Sep 30 22:43:16 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 79 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee72508 Ack x20367626 ACK PSH Wnd 31744 Data 39
0000 FF FB 03 FF FD 1F FF FD 21 FF FE 22 FF FB 05 FF | ÿû.ÿý.ÿý!ÿþ"ÿû.ÿ
0010 FA 20 01 FF F0 FF FA 23 01 FF F0 FF FA 27 01 FF | ú .ÿðÿú#.ÿðÿú'.ÿ
0020 F0 FF FA 18 01 FF F0 | ðÿú..ÿð

[Tue Sep 30 22:43:16 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036766e Ack xcee7252f ACK Wnd 31744

[Tue Sep 30 22:43:18 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 112 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee7252f ACK PSH Wnd 31744 Data 72
0000 FF FA 1F 00 50 00 3C FF F0 FF FA 20 00 39 36 30 | ÿú..P.<ÿðÿú .960
0010 30 2C 39 36 30 30 FF F0 FF FA 23 00 70 65 74 65 | 0,9600ÿðÿú#.pete
0020 3A 30 2E 30 FF F0 FF FA 27 00 00 44 49 53 50 4C | :0.0ÿðÿú'..DISPL
0030 41 59 01 70 65 74 65 3A 30 2E 30 FF F0 FF FA 18 | AY.pete:0.0ÿðÿú.
0040 00 58 54 45 52 4D FF F0 | .XTERMÿð

[Tue Sep 30 22:43:18 1997]
Port radio: EAX25: [invalid]->8WA3-14 v [invalid] [invalid]* <I C S22 R40> pid=0xc [DAMA]
0000 1C 20 86 00 17 20 36 76 6E CE E7 25 2F 50 10 7C | . ... 6vnÎç%/P.|
0010 00 17 3B 00 00 | ..;..

[Tue Sep 30 22:43:28 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 79 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee72508 Ack x20367626 ACK PSH Wnd 31744 Data 39
0000 FF FB 03 FF FD 1F FF FD 21 FF FE 22 FF FB 05 FF | ÿû.ÿý.ÿý!ÿþ"ÿû.ÿ
0010 FA 20 01 FF F0 FF FA 23 01 FF F0 FF FA 27 01 FF | ú .ÿðÿú#.ÿðÿú'.ÿ
0020 F0 FF FA 18 01 FF F0 | ðÿú..ÿð

[Tue Sep 30 22:43:28 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036766e Ack xcee7252f ACK Wnd 31744

[Tue Sep 30 22:43:30 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 112 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367626 Ack xcee7252f ACK PSH Wnd 31744 Data 72
0000 FF FA 1F 00 50 00 3C FF F0 FF FA 20 00 39 36 30 | ÿú..P.<ÿðÿú .960
0010 30 2C 39 36 30 30 FF F0 FF FA 23 00 70 65 74 65 | 0,9600ÿðÿú#.pete
0020 3A 30 2E 30 FF F0 FF FA 27 00 00 44 49 53 50 4C | :0.0ÿðÿú'..DISPL
0030 41 59 01 70 65 74 65 3A 30 2E 30 FF F0 FF FA 18 | AY.pete:0.0ÿðÿú.
0040 00 58 54 45 52 4D FF F0 | .XTERMÿð

[Tue Sep 30 22:43:30 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036766e Ack xcee7252f ACK Wnd 31744

[Tue Sep 30 22:43:31 1997]
Port radio: AX25: [invalid]->BG8W-1 v [invalid] [invalid] [invalid] [invalid] [invalid] [invalid]* [invalid]* [invalid] [invalid]* <I S0 R7> pid=0xff [DAMA]
0000 FA 23 00 70 65 74 65 3A 30 2E 30 FF F0 FF FA 27 | ú#.pete:0.0ÿðÿú'
0010 00 00 44 49 53 50 4C 41 59 01 70 65 74 65 3A 30 | ..DISPLAY.pete:0
0020 2E 30 FF F0 FF FA 18 00 58 54 45 52 4D FF F0 | .0ÿðÿú..XTERMÿð

[Tue Sep 30 22:43:32 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 43 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee7252f Ack x2036766e ACK PSH Wnd 31744 Data 3
0000 FF FD 01 | ÿý.

[Tue Sep 30 22:43:32 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 43 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x2036766e Ack xcee72532 ACK PSH Wnd 31744 Data 3
0000 FF FC 01 | ÿü.

[Tue Sep 30 22:43:36 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 85 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee72532 Ack x20367671 ACK PSH Wnd 31744 Data 45
0000 FF FB 01 0D 0A 4C 69 6E 75 78 20 32 2E 30 2E 33 | ÿû...Linux 2.0.3
0010 30 20 28 77 33 62 67 2E 61 6D 70 72 2E 6F 72 67 | 0 (w3bg.ampr.org
0020 29 20 28 74 74 79 70 34 29 0D 0A 0D 0A | ) (ttyp4)....

[Tue Sep 30 22:43:36 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 43 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367671 Ack xcee7255f ACK PSH Wnd 31744 Data 3
0000 FF FD 01 | ÿý.

[Tue Sep 30 22:43:38 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 54 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee7255f Ack x20367671 ACK PSH Wnd 31744 Data 14
0000 0D 0A 77 33 62 67 20 6C 6F 67 69 6E 3A 20 | ..w3bg login:

[Tue Sep 30 22:43:38 1997]
Port radio: AX25: WA3NNA-8->W3BG-8 <UI> pid=IP
IP: len 40 44.80.12.133->44.80.12.28 ihl 20 ttl 64 DF prot TCP
TCP: 8326->telnet Seq x20367674 Ack xcee7256d ACK Wnd 31744

[Tue Sep 30 22:43:39 1997]
Port radio: AX25: W3BG-8->WA3NNA-8 <UI> pid=IP
IP: len 40 44.80.12.28->44.80.12.133 ihl 20 ttl 64 DF prot TCP
TCP: telnet->8326 Seq xcee7256d Ack x20367674 ACK Wnd 31744

Sorry for such a lengthy post..

---


Pete Rossi - WA3NNA
ukqa.wdenxg@mx.dy.fi
dbrztw@dracena.crowley.pl