strange connection problem

Hi,

I bought 8 Cisco 350 Series AP and a number of 350 Series Clients.

In the setup as described below, clients with an Intel-wifi card can
establish a telnet session with the server without problems, 350 Series
clients however cannot connect to the server: I get the following sequence
(viewed from the client): SYN - SYN/ACK - RST instead of SYN - SYN/ACK -
ACK.

In other words, the client breaks of the connection. If I move the AP's from
switch1 to switch2, the problem does not occur!




situation:

Clients -(wifi)--
AccessPoints--(cat5)---switch1 -----(fiber)----switch2 -----(fiber)----switc
h3----(cat6)-----SERVER





below, the data from a Failed (350 client) Telnet Session and from a
successful (Intel client) session

Failed:

=======================================

Packet #1, Direction: In, Time:11:56:19.078, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0002 (2)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7E (126)

Protocol: 0x06 (6) - TCP

Checksum: 0x6967 (26983) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA0 (83532704)

Acknowledgement: 0x00000000 (0)

Header length: 0x06 (6) - 24 bytes

Flags: SYN

URG: 0

ACK: 0

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xD80E (55310) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 2C 00 02 00 00 7E 06-69 67 82 00 06 9A 82 00 .,....~.ig,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A0 00 00 00 00 60 02 È^.Ó...ú> ....`.

0x0030 44 70 D8 0E 00 00 02 04-05 B4 0B 2B DpØ......´.+

================================================== ==========================

Packet #2, Direction: Out, Time:11:56:19.088, Size: 58

Ethernet II

Destination MAC: 00:0D:29:62:79:B7

Source MAC: 00:90:96:1A:B2:9B

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0059 (89)

Flags

Don't fragment bit: 1 - Don't fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x80 (128)

Protocol: 0x06 (6) - TCP

Checksum: 0x2750 (10064) - correct

Source IP: 130.0.200.136

Destination IP: 130.0.6.154

IP Options: None

TCP

Source port: 23

Destination port: 2003

Sequence: 0x0E40F8BC (239139004)

Acknowledgement: 0x04FA9BA1 (83532705)

Header length: 0x06 (6) - 24 bytes

Flags: SYN ACK

URG: 0

ACK: 1

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xD100 (53504) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 0D 29 62 79 B7 00 90-96 1A B2 9B 08 00 45 00 ..)by·.?-.²>..E.

0x0010 00 2C 00 59 40 00 80 06-27 50 82 00 C8 88 82 00 .,.Y@.?.'P,.È^,.

0x0020 06 9A 00 17 07 D3 0E 40-F8 BC 04 FA 9B A1 60 12 .s...Ó.@ø¼.ú>¡`.

0x0030 44 70 D1 00 00 00 02 04-05 B4 DpÑ......´

================================================== ==========================

Packet #3, Direction: In, Time:11:56:19.289, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x0028 (40)

ID: 0x0003 (3)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x686A (26730) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA1 (83532705)

Acknowledgement: 0x00000000 (0)

Header length: 0x05 (5) - 20 bytes

Flags: RST

URG: 0

ACK: 0

PSH: 0

RST: 1

SYN: 0

FIN: 0

Window: 0x0000 (0)

Checksum: 0x3438 (13368) - correct

Urgent Pointer: 0x0000 (0)

TCP Options: None

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 28 00 03 00 00 7F 06-68 6A 82 00 06 9A 82 00 .(.....hj,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A1 00 00 00 00 50 04 È^.Ó...ú>¡....P.

0x0030 00 00 34 38 00 00 02 04-05 B4 0B 2B ..48.....´.+

================================================== ==========================

Packet #4, Direction: In, Time:11:56:19.899, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0004 (4)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x6865 (26725) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA0 (83532704)

Acknowledgement: 0x00000000 (0)

Header length: 0x06 (6) - 24 bytes

Flags: SYN

URG: 0

ACK: 0

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xD80E (55310) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 2C 00 04 00 00 7F 06-68 65 82 00 06 9A 82 00 .,.....he,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A0 00 00 00 00 60 02 È^.Ó...ú> ....`.

0x0030 44 70 D8 0E 00 00 02 04-05 B4 0B 2B DpØ......´.+

================================================== ==========================

Packet #5, Direction: Out, Time:11:56:19.909, Size: 58

Ethernet II

Destination MAC: 00:0D:29:62:79:B7

Source MAC: 00:90:96:1A:B2:9B

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x005A (90)

Flags

Don't fragment bit: 1 - Don't fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x80 (128)

Protocol: 0x06 (6) - TCP

Checksum: 0x274F (10063) - correct

Source IP: 130.0.200.136

Destination IP: 130.0.6.154

IP Options: None

TCP

Source port: 23

Destination port: 2003

Sequence: 0x0E44CAB8 (239389368)

Acknowledgement: 0x04FA9BA1 (83532705)

Header length: 0x06 (6) - 24 bytes

Flags: SYN ACK

URG: 0

ACK: 1

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xFF00 (65280) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 0D 29 62 79 B7 00 90-96 1A B2 9B 08 00 45 00 ..)by·.?-.²>..E.

0x0010 00 2C 00 5A 40 00 80 06-27 4F 82 00 C8 88 82 00 .,.Z@.?.'O,.È^,.

0x0020 06 9A 00 17 07 D3 0E 44-CA B8 04 FA 9B A1 60 12 .s...Ó.Dʸ.ú>¡`.

0x0030 44 70 FF 00 00 00 02 04-05 B4 Dpÿ......´

================================================== ==========================

Packet #6, Direction: In, Time:11:56:20.100, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x0028 (40)

ID: 0x0005 (5)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x6868 (26728) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA1 (83532705)

Acknowledgement: 0x00000000 (0)

Header length: 0x05 (5) - 20 bytes

Flags: RST

URG: 0

ACK: 0

PSH: 0

RST: 1

SYN: 0

FIN: 0

Window: 0x0000 (0)

Checksum: 0x3438 (13368) - correct

Urgent Pointer: 0x0000 (0)

TCP Options: None

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 28 00 05 00 00 7F 06-68 68 82 00 06 9A 82 00 .(.....hh,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A1 00 00 00 00 50 04 È^.Ó...ú>¡....P.

0x0030 00 00 34 38 00 00 02 04-05 B4 0B 2B ..48.....´.+

================================================== ==========================

Packet #7, Direction: In, Time:11:56:22.153, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0006 (6)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x6863 (26723) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA0 (83532704)

Acknowledgement: 0x00000000 (0)

Header length: 0x06 (6) - 24 bytes

Flags: SYN

URG: 0

ACK: 0

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xD80E (55310) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 2C 00 06 00 00 7F 06-68 63 82 00 06 9A 82 00 .,.....hc,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A0 00 00 00 00 60 02 È^.Ó...ú> ....`.

0x0030 44 70 D8 0E 00 00 02 04-05 B4 0B 2B DpØ......´.+

================================================== ==========================

Packet #8, Direction: Out, Time:11:56:22.163, Size: 58

Ethernet II

Destination MAC: 00:0D:29:62:79:B7

Source MAC: 00:90:96:1A:B2:9B

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x005E (94)

Flags

Don't fragment bit: 1 - Don't fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x80 (128)

Protocol: 0x06 (6) - TCP

Checksum: 0x274B (10059) - correct

Source IP: 130.0.200.136

Destination IP: 130.0.6.154

IP Options: None

TCP

Source port: 23

Destination port: 2003

Sequence: 0x0E4E054C (239994188)

Acknowledgement: 0x04FA9BA1 (83532705)

Header length: 0x06 (6) - 24 bytes

Flags: SYN ACK

URG: 0

ACK: 1

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0xC463 (50275) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 0D 29 62 79 B7 00 90-96 1A B2 9B 08 00 45 00 ..)by·.?-.²>..E.

0x0010 00 2C 00 5E 40 00 80 06-27 4B 82 00 C8 88 82 00 .,.^@.?.'K,.È^,.

0x0020 06 9A 00 17 07 D3 0E 4E-05 4C 04 FA 9B A1 60 12 .s...Ó.N.L.ú>¡`.

0x0030 44 70 C4 63 00 00 02 04-05 B4 DpÄc.....´

================================================== ==========================

Packet #9, Direction: In, Time:11:56:22.353, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x40 (64)

Precedence: 010 - Immediate

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x0028 (40)

ID: 0x0007 (7)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x6866 (26726) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x04FA9BA1 (83532705)

Acknowledgement: 0x00000000 (0)

Header length: 0x05 (5) - 20 bytes

Flags: RST

URG: 0

ACK: 0

PSH: 0

RST: 1

SYN: 0

FIN: 0

Window: 0x0000 (0)

Checksum: 0x3438 (13368) - correct

Urgent Pointer: 0x0000 (0)

TCP Options: None

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 40 .?-.²>..)by·..E@

0x0010 00 28 00 07 00 00 7F 06-68 66 82 00 06 9A 82 00 .(.....hf,..s,.

0x0020 C8 88 07 D3 00 17 04 FA-9B A1 00 00 00 00 50 04 È^.Ó...ú>¡....P.

0x0030 00 00 34 38 00 00 02 04-05 B4 0B 2B ..48.....´.+



================================================== ==========================
==











Successful:

================================================== ==========================
==

Packet #1, Direction: In, Time:12:01:28.862, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0001 (1)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7E (126)

Protocol: 0x06 (6) - TCP

Checksum: 0x69A8 (27048) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x24004F00 (604000000)

Acknowledgement: 0x00000000 (0)

Header length: 0x06 (6) - 24 bytes

Flags: SYN

URG: 0

ACK: 0

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0x05A9 (1449) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 00 .?-.²>..)by·..E.

0x0010 00 2C 00 01 00 00 7E 06-69 A8 82 00 06 9A 82 00 .,....~.i¨,..s,.

0x0020 C8 88 07 D3 00 17 24 00-4F 00 00 00 00 00 60 02 È^.Ó..$.O.....`.

0x0030 44 70 05 A9 00 00 02 04-05 B4 0B 2B Dp.©.....´.+

================================================== ==========================

Packet #2, Direction: Out, Time:12:01:28.862, Size: 58

Ethernet II

Destination MAC: 00:0D:29:62:79:B7

Source MAC: 00:90:96:1A:B2:9B

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x002C (44)

ID: 0x0071 (113)

Flags

Don't fragment bit: 1 - Don't fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x80 (128)

Protocol: 0x06 (6) - TCP

Checksum: 0x2738 (10040) - correct

Source IP: 130.0.200.136

Destination IP: 130.0.6.154

IP Options: None

TCP

Source port: 23

Destination port: 2003

Sequence: 0x12E0B433 (316716083)

Acknowledgement: 0x24004F01 (604000001)

Header length: 0x06 (6) - 24 bytes

Flags: SYN ACK

URG: 0

ACK: 1

PSH: 0

RST: 0

SYN: 1

FIN: 0

Window: 0x4470 (17520)

Checksum: 0x3E84 (16004) - correct

Urgent Pointer: 0x0000 (0)

TCP Options

Maximum Segment Size: 0x05B4 (1460)

Data length: 0x0 (0)

Raw Data:

0x0000 00 0D 29 62 79 B7 00 90-96 1A B2 9B 08 00 45 00 ..)by·.?-.²>..E.

0x0010 00 2C 00 71 40 00 80 06-27 38 82 00 C8 88 82 00 .,.q@.?.'8,.È^,.

0x0020 06 9A 00 17 07 D3 12 E0-B4 33 24 00 4F 01 60 12 .s...Ó.à´3$.O.`.

0x0030 44 70 3E 84 00 00 02 04-05 B4 Dp>".....´

================================================== ==========================

Packet #3, Direction: In, Time:12:01:29.153, Size: 60

Ethernet II

Destination MAC: 00:90:96:1A:B2:9B

Source MAC: 00:0D:29:62:79:B7

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x0028 (40)

ID: 0x0002 (2)

Flags

Don't fragment bit: 0 - May fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x7F (127)

Protocol: 0x06 (6) - TCP

Checksum: 0x68AB (26795) - correct

Source IP: 130.0.6.154

Destination IP: 130.0.200.136

IP Options: None

TCP

Source port: 2003

Destination port: 23

Sequence: 0x24004F01 (604000001)

Acknowledgement: 0x12E0B434 (316716084)

Header length: 0x05 (5) - 20 bytes

Flags: ACK

URG: 0

ACK: 1

PSH: 0

RST: 0

SYN: 0

FIN: 0

Window: 0x4470 (17520)

Checksum: 0x5641 (22081) - correct

Urgent Pointer: 0x0000 (0)

TCP Options: None

Data length: 0x0 (0)

Raw Data:

0x0000 00 90 96 1A B2 9B 00 0D-29 62 79 B7 08 00 45 00 .?-.²>..)by·..E.

0x0010 00 28 00 02 00 00 7F 06-68 AB 82 00 06 9A 82 00 .(.....h«,..s,.

0x0020 C8 88 07 D3 00 17 24 00-4F 01 12 E0 B4 34 50 10 È^.Ó..$.O..à´4P.

0x0030 44 70 56 41 00 00 02 04-05 B4 0B 2B DpVA.....´.+

================================================== ==========================

Packet #4, Direction: Out, Time:12:01:29.153, Size: 72

Ethernet II

Destination MAC: 00:0D:29:62:79:B7

Source MAC: 00:90:96:1A:B2:9B

Ethertype: 0x0800 (2048) - IP

IP

IP version: 0x04 (4)

Header length: 0x05 (5) - 20 bytes

Type of service: 0x00 (0)

Precedence: 000 - Routine

Delay: 0 - Normal delay

Throughput: 0 - Normal throughput

Reliability: 0 - Normal reliability

Total length: 0x003A (58)

ID: 0x0072 (114)

Flags

Don't fragment bit: 1 - Don't fragment

More fragments bit: 0 - Last fragment

Fragment offset: 0x0000 (0)

Time to live: 0x80 (128)

Protocol: 0x06 (6) - TCP

Checksum: 0x2729 (10025) - correct

Source IP: 130.0.200.136

Destination IP: 130.0.6.154

IP Options: None

TCP

Source port: 23

Destination port: 2003

Sequence: 0x12E0B434 (316716084)

Acknowledgement: 0x24004F01 (604000001)

Header length: 0x05 (5) - 20 bytes

Flags: PSH ACK

URG: 0

ACK: 1

PSH: 1

RST: 0

SYN: 0

FIN: 0

Window: 0x4470 (17520)

Checksum: 0x380D (14349) - correct

Urgent Pointer: 0x0000 (0)

TCP Options: None

Telnet

Command: DO AUTHENTICATION

Command: WILL ECHO

Command: DO SUPPRESS-GO-AHEAD

Command: DO NAWS

Command: DO TRANSMIT-BINARY

Command: WILL TRANSMIT-BINARY

Raw Data:

0x0000 00 0D 29 62 79 B7 00 90-96 1A B2 9B 08 00 45 00 ..)by·.?-.²>..E.

0x0010 00 3A 00 72 40 00 80 06-27 29 82 00 C8 88 82 00 .:.r@.?.'),.È^,.

0x0020 06 9A 00 17 07 D3 12 E0-B4 34 24 00 4F 01 50 18 .s...Ó.à´4$.O.P.

0x0030 44 70 38 0D 00 00 FF FD-25 FF FB 01 FF FD 03 FF Dp8...ÿý%ÿû.ÿý.ÿ

0x0040 FD 1F FF FD 00 FF FB 00- ý.ÿý.ÿû.

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