TCP IP Protocol Definitions Suite

8/9/2019 TCP IP Protocol Definitions Suite

1/42

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2/42

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3/42

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4/42

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Data Link

Application

FTP, Telnet, SMTP, POP3

Session

Transport

Network

Presentation

TFTPNTP

TACACS+, TACACSX-WIndows

GDP

HTTP

DNS

RLOGIN, RSHELL,PRINT, REXEC, RWHO

CMOT, SNMP

IMAP4

XOT

DSMCC (MPEG)

ISO DE

NetBIOS-SSN

TCP

DVMRP

TPKT

Physical

RTSPHTTP-SSSHRADIUSISAKMP

NetBIOS-DGM

Mobile IP

XTPUDP

IGMP

PIM

TrailersL2F, PPTP,L2TP, ATMP

RSRB

TDP MPLS

ESP AH

BGP, RIP, GRE, E-IGRP,NHRP, GGP, HSRP, EGP,

IGRP, OSPF, NARP

BOOTPDHCP

IP

ICMP RSVP

STUN-SDLC

CSLIPSLIP

ARP, RARP, IARP, SLARP

NetBIOS-NS LDAP

X.25


5/42

+2

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7KH,3KHDGHUVWUXFWXUHLVDVIROORZV

4 8 16 32 bits

Ver. IHL Type of service Total length

Identification Flags Fragment offset

Time to live Protocol Header checksum

Source address

Destination address

Option + Padding

Data

,3KHDGHUVWUXFWXUH

8GTUKQPGTUKQP9HUVLRQILHOGLQGLFDWHVWKHIRUPDWRIWKH,QWHUQHWKHDGHU

+*.*.,QWHUQHWKHDGHUOHQJWKLVWKHOHQJWKRIWKH,QWHUQHWKHDGHULQELWZRUGV3RLQWVWRWKHEHJLQQLQJRIWKHGDWD7KHPLQLPXPYDOXHIRUDFRUUHFWKHDGHULV

6[RGQHUGTXKEG[RGQHUGTXKEG,QGLFDWHVWKHTXDOLW\RIVHUYLFHGHVLUHG1HWZRUNVPD\RIIHUVHUYLFHSUHFHGHQFHPHDQLQJWKDWWKH\DFFHSWWUDIILFRQO\DERYHDFHUWDLQSUHFHGHQFHDWWLPHVRIKLJKORDG7KHUHLVDWKUHHZD\WUDGHRIIEHWZHHQORZGHOD\KLJKUHOLDELOLW\DQGKLJKWKURXJKSXW

%LWV3UHFHGHQFH 1HWZRUNFRQWURO ,QWHUQHWZRUNFRQWURO


6/42

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7/42

+2

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8/42

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9/42

+2X

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7KH,3YKHDGHUVWUXFWXUHLVDVIROORZV

4 4 16 24 32 bits

Ver. Priority Flow label

Payload length Next header Hop limit

Source address(128 Bytes)

Destination address(128 bytes)

,3YKHDGHUVWUXFWXUH


10/42

6%2+25WKVG

8GTUKQP,QWHUQHW3URWRFRO9HUVLRQQXPEHU,3YLV

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11/42

6%2

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7KH7&3KHDGHUVWUXFWXUHLVDVIROORZV

4 10 16 32 bits

Source port Destination port

Sequence number

Acknowledgement number

Offset Resrvd U A P R S F Window

Checksum Urgent pointer

Option + PaddingData

7&3KHDGHUVWUXFWXUH

5QWTEGRQTVQWTEGRQTV6RXUFHSRUWQXPEHU

&GUVKPCVKQPRQTVGUVKPCVKQPRQTV'HVWLQDWLRQSRUWQXPEHU

5GSWGPEGPWODGTGSWGPEGPWODGT7KHVHTXHQFHQXPEHURIWKHILUVWGDWDRFWHWLQWKLVVHJPHQWH[FHSWZKHQ6


12/42

6%2+25WKVG

&CVCQHHUGVELWV7KHQXPEHURIELWZRUGVLQWKH7&3KHDGHUZKLFKLQGLFDWHV

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4GUGTXGFELWV5HVHUYHGIRUIXWXUHXVH0XVWEH]HUR

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13/42

6%2

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14/42

6%2+25WKVG

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7KH8'3KHDGHUVWUXFWXUHLVVKRZQDVIROORZV

16 32 bitsSource port Destination port

Length Checksum

Data

8'3KHDGHUVWUXFWXUH

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%JGEMUWOJGEMUWO7KHELWRQHVFRPSOHPHQWRIWKHRQHVFRPSOHPHQWVXPRIDSVHXGRKHDGHURILQIRUPDWLRQIURPWKH,3KHDGHUWKH8'3KHDGHUDQGWKHGDWDSDGGHGZLWK]HURRFWHWVDWWKHHQGLIQHFHVVDU\WRPDNHDPXOWLSOHRIWZRRFWHWV


15/42

7&2

&CVC8'3GDWDILHOG


16/42

6%2+25WKVG

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7KH$535$53KHDGHUVWUXFWXUHLVVKRZQLQWKHLOOXVWUDWLRQEHORZ

16 32 bits

Hardware Type Protocol Type

HLen (8) Plen (8) Operation

Sender Hardware Address

Sender Protocol AddressTarget Hardware Address

Target Protocol Address

$535$53KHDGHUVWUXFWXUH

*CTFYCTGV[RGCTFYCTGV[RG6SHFLILHVDKDUGZDUHLQWHUIDFHW\SHIRUZKLFKWKHVHQGHUUHTXLUHVDUHVSRQVH

2TQVQEQNV[RGTQVQEQNV[RG6SHFLILHVWKHW\SHRIKLJKOHYHOSURWRFRODGGUHVVWKHVHQGHUKDVVXSSOLHG

*.GP.GP+DUGZDUHDGGUHVVOHQJWK

2.GP.GP3URWRFRODGGUHVVOHQJWK


17/42

#424#42

1RGTCVKQP7KHYDOXHVDUHDVIROORZV

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Relay address (16 octets)

Saved agent address (16 octets)

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8 16 24 25 32 bits

Message type S reserved Preference


Agent address (16 octets)

Server address (16 octets)

Extensions

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8 16 24 25 32 bits

Message type C S R rsvd Transaction IDClient link local address (16 octets)



Extensions

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6TCPUCEVKQP+&8QVLJQHGLQWHJHULGHQWLILHUXVHGWRLGHQWLI\WKLVUHTXHVW

7KHUHPDLQLQJILHOGVDUHGHVFULEHGLQWKH6ROLFLWDQG$GYHUWLVHPHVVDJHV

&*%24GRN[OGUUCIG7KHVHUYHUVHQGVRQH'+&35HSO\PHVVDJHLQUHVSRQVHWRHYHU\'+&35HTXHVWRU'+&35HOHDVHUHFHLYHG,IWKHUHTXHVWFRPHVZLWKWKH6ELWVHWWKHFOLHQWFRXOGQRWGLUHFWO\VHQGWKH5HTXHVWWRWKHVHUYHUDQGKDGWRXVHDQHLJKERULQJUHOD\DJHQW,QWKDWFDVHWKHVHUYHUVHQGVEDFNWKH'+&35HSO\ZLWKWKH/ELWVHWDQGWKH'+&35HSO\LVDGGUHVVHGWRWKHDJHQWDGGUHVVIRXQGLQWKH'+&35HTXHVWPHVVDJH$OOWKHILHOGVLQWKH'+&35HSO\PHVVDJHDUHVHWE\WKH'+&3VHUYHU

8 16 24 25 32 bits

Message type L Status Transaction ID


Extensions

'+&35HSO\PHVVDJHVWUXFWXUH

/GUUCIGV[RG9DOXHRIVSHFLILHVD5HSO\PHVVDJH

.,IVHWWKHFOLHQWOLQNORFDODGGUHVVLVSUHVHQW5VCVWU0D\KDYHWKHIROORZLQJYDOXHV 6XFFHVV )DLOXUHUHDVRQXQVSHFLILHG $XWKHQWLFDWLRQIDLOHGRUQRQH[LVWHQW 3RRUO\IRUPHG5HTXHVWRU5HOHDVH

5HVRXUFHVXQDYDLODEOH &OLHQWUHFRUGXQDYDLODEOH ,QYDOLGFOLHQW,3DGGUHVVLQ5HOHDVH


35/42

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5HOD\FDQQRWILQGVHUYHUDGGUHVV 6HUYHUXQUHDFKDEOH,&03HUURU

6TCPUCEVKQP+&8QVLJQHGLQWHJHULGHQWLILHUXVHGWRLGHQWLI\WKLV5HSO\FRSLHGIURPWKHFOLHQW5HTXHVW

%NKGPVNKPMNQECNCFFTGUU,ISUHVHQWWKH,3DGGUHVVRIWKHFOLHQWLQWHUIDFHZKLFKLVVXHGWKHFRUUHVSRQGLQJ'+&35HTXHVWPHVVDJH,IWKH/ELWLVVHWWKHFOLHQWVOLQNORFDODGGUHVVLVSUHVHQWLQWKH5HSO\PHVVDJH7KHQWKH5HSO\LVVHQWE\WKH

VHUYHUWRWKHUHOD\VDGGUHVVZKLFKZDVVSHFLILHGDVWKHDJHQWDGGUHVVLQWKH'+&35HTXHVWPHVVDJHDQGWKHUHOD\XVHVWKHOLQNORFDODGGUHVVWRGHOLYHUWKH5HSO\PHVVDJHWRWKHFOLHQW7KHWUDQVDFWLRQ,'LQWKH'+&35HSO\LVFRSLHGE\WKHVHUYHUIURPWKHFOLHQW5HTXHVWPHVVDJH

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DGGUHVVZLWKVXIILFLHQWVFRSHWRDOORZDFFHVVWRWKHWDUJHWVHUYHU,ISDUDPHWHUVDUHVSHFLILHGLQWKHH[WHQVLRQVRQO\WKRVHSDUDPHWHUVDUHUHOHDVHG7KHYDOXHVRIDOOILHOGVRIWKH'+&35HOHDVHPHVVDJHDUHHQWHUHGE\WKH&OLHQW7KH'+&3VHUYHUDFNQRZOHGJHVWKH5HOHDVHPHVVDJHE\VHQGLQJD'+&35HSO\

8 16 24 25 32 bits

Message type D Reserved Transaction ID



Client address (16 octets)

Extensions

'+&35HOHDVHPHVVDJHVWUXFWXUH

/GUUCIGV[RG9DOXHRIVSHFLILHVD5HOHDVHPHVVDJH


36/42

6%2+25WKVG

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7KHUHPDLQLQJILHOGVDUHGHVFULEHGLQWKHRWKHU'+&3PHVVDJHV

&*%24GEQPHKIWTGOGUUCIG'+&35HFRQILJXUHPHVVDJHVFDQRQO\EHVHQWWRFOLHQWVZKLFKKDYHHVWDEOLVKHGDQ,3DGGUHVVZKLFKURXWHVWRWKHOLQNDWZKLFKWKH\DUHUHDFKDEOHKHQFHWKH'+&35HFRQILJXUHPHVVDJHLVVHQWZLWKRXWWKHDVVLVWDQFHRIDQ\'+&3UHOD\:KHQDVHUYHUVHQGVD5HFRQILJXUHPHVVDJHWKHUHFHLYHUVDUHDVVXPHGWRKDYHDYDOLG,3DGGUHVVZLWKVXIILFLHQWVFRSHWREHDFFHVVLEOHE\WKHVHUYHU2QO\WKHSDUDPHWHUVZKLFKDUHVSHFLILHGLQWKHH[WHQVLRQVWRWKH5HFRQILJXUHPHVVDJHQHHGEHUHTXHVWHGDJDLQE\WKH

FOLHQW$5HFRQILJXUHPHVVDJHFDQHLWKHUEHXQLFDVWRUPXOWLFDVWE\WKHVHUYHU7KHFOLHQWH[WUDFWVWKHH[WHQVLRQVSURYLGHGE\WKHVHUYHUDQGVHQGVD'+&35HTXHVWPHVVDJHWRWKHVHUYHUXVLQJWKRVHH[WHQVLRQV

8 16 24 32 bits

Message type N Reserved Transaction ID


Extensions

'+&35HFRQILJXUHPHVVDJHVWUXFWXUH

/GUUCIGV[RG9DOXHRIVSHFLILHVD5HFRQILJXUHPHVVDJH

0,QGLFDWHVWKDWWKHFOLHQWVKRXOGQRWH[SHFWD'+&35HSO\LQUHVSRQVHWRWKH'+&35HTXHVWLWVHQGVDVDUHVXOWRIWKH'+&35HFRQILJXUHPHVVDJH

7KHUHPDLQLQJILHOGVDUHGHVFULEHGLQWKHRWKHU'+&3PHVVDJHV


37/42

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'LVWDQFH9HFWRU0XOWLFDVW5RXWLQJ3URWRFRO'9053LVDQ,QWHUQHWURXWLQJSURWRFROWKDWSURYLGHVDQHIILFLHQWPHFKDQLVPIRUFRQQHFWLRQOHVVGDWDJUDPGHOLYHU\WRDJURXSRIKRVWVDFURVVDQLQWHUQHWZRUN,WLVDGLVWULEXWHGSURWRFROWKDWG\QDPLFDOO\JHQHUDWHV,3PXOWLFDVWGHOLYHU\WUHHV

XVLQJDWHFKQLTXHFDOOHG5HYHUVH3DWK0XOWLFDVWLQJ'9053FRPELQHVPDQ\RIWKHIHDWXUHVRI5,3ZLWKWKH7UXQFDWHG5HYHUVH3DWK%URDGFDVWLQJ753%DOJRULWKP'9053LVGHYHORSHGEDVHGXSRQ5,3EHFDXVHDQLPSOHPHQWDWLRQZDVDYDLODEOHDQGGLVWDQFHYHFWRUDOJRULWKPVDUHVLPSOHDVFRPSDUHGWROLQNVWDWHDOJRULWKPV,QDGGLWLRQWRDOORZH[SHULPHQWVWRWUDYHUVHQHWZRUNVWKDWGRQRWVXSSRUWPXOWLFDVWLQJDPHFKDQLVPFDOOHGWXQQHOLQJZDVGHYHORSHG

'9053GLIIHUVIURP5,3LQRQHYHU\LPSRUWDQWZD\5,3URXWHVDQG

IRUZDUGVGDWDJUDPVWRDSDUWLFXODUGHVWLQDWLRQ7KHSXUSRVHRI'9053LVWRNHHSWUDFNRIWKHUHWXUQSDWKVWRWKHVRXUFHRIPXOWLFDVWGDWDJUDPV7RPDNHWKHH[SODQDWLRQRI'9053PRUHFRQVLVWHQWZLWK5,3WKHWHUPGHVWLQDWLRQLVXVHGLQVWHDGRIWKHPRUHSURSHUWHUPVRXUFHKRZHYHUGDWDJUDPVDUHQRWIRUZDUGHGWRWKHVHGHVWLQDWLRQVEXWUDWKHURULJLQDWHIURPWKHP

'9053SDFNHWVDUHHQFDSVXODWHGLQ,3GDWDJUDPVZLWKDQ,3SURWRFROQXPEHURI,*03$OOILHOGVDUHWUDQVPLWWHGLQ1HWZRUN%\WH2UGHU'9053SDFNHWVXVHDFRPPRQSURWRFROKHDGHUWKDWVSHFLILHVWKH,*03

3DFNHW7\SHDV'9053'9053SURWRFROSDFNHWVVKRXOGEHVHQWZLWKWKH3UHFHGHQFHILHOGLQWKH,3KHDGHUVHWWR,QWHUQHWZRUN&RQWUROKH[DGHFLPDO[FIRUWKH7\SHRI6HUYLFH2FWHW7KHFRPPRQSURWRFROKHDGHULVDVVKRZQLQWKHIROORZLQJLOOXVWUDWLRQ

8 16 24 32 bits

Type Code Checksum

Reserved Min version Maj version

'9053VWUXFWXUH

6[RG[RG3DFNHWW\SH[LQGLFDWHVD'9053SDFNHW


38/42

6%2+25WKVG

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YDOLGDWHGRQUHFHSWLRQRIDSDFNHW7KHFKHFNVXPRIWKH'9053PHVVDJHVKRXOGEHFDOFXODWHGZLWKWKHFKHFNVXPILHOGVHWWR]HUR

4GUGTXGF5HVHUYHGIRUODWHUXVH

/KPXGTUKQP0LQRUYHUVLRQ9DOXHPXVWEH[))IRUWKLVYHUVLRQRI'9053

/CLXGTUKQP0DMRUYHUVLRQ9DOXHPXVWEHIRUWKLVYHUVLRQRI'9053


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7KH,&03KHDGHUVWUXFWXUHLVVKRZQDVIROORZV

8 16 32 bits

Type Code ChecksumIdentifier Sequence number

Address mask

,&03KHDGHUVWUXFWXUH

7\SH &RGH 'HVFULSWLRQ

(FKRUHSO\ 'HVWLQDWLRQXQUHDFKDEOH

1HWXQUHDFKDEOH +RVWXQUHDFKDEOH 3URWRFROXQUHDFKDEOH 3RUWXQUHDFKDEOH )UDJPHQWDWLRQQHHGHGDQG')VHW 6RXUFHURXWHIDLOHG 6RXUFHTXHQFK 5HGLUHFW 5HGLUHFWGDWDJUDPVIRUWKHQHWZRUN

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7\SH &RGH 'HVFULSWLRQ

,QIRUPDWLRQUHTXHVW

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5GSWGPEGPWODGT6HTXHQFHQXPEHUWRDLGLQPDWFKLQJUHTXHVWVUHSOLHVPD\EH]HUR

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7KHVWUXFWXUHRIWKH,&03YKHDGHULVVKRZQLQWKHIROORZLQJLOOXVWUDWLRQ

8 16 32 bits

Type Code Checksum

,&03YKHDGHUVWUXFWXUH

6[RG[RG7KHW\SHRIWKHPHVVDJH0HVVDJHVFDQEHHUURURULQIRUPDWLRQDOPHVVDJHV(UURUPHVVDJHVFDQEH'HVWLQDWLRQXQUHDFKDEOH3DFNHWWRRELJ7LPH

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4 8 16 32 bits

Ver Type Unused Checksum

Group address

,*03SDFNHWVWUXFWXUH

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6[RG[RG7KHPHVVDJHW\SH +RVW0HPEHUVKLS4XHU\ +RVW0HPEHUVKLS5HSRUW

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Documents

TCP IP Protocol Definitions Suite