US007469298B2
`
`(12) United States Patent
`Kitada et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 7.469,298 B2
`Dec. 23, 2008
`
`(54) METHOD AND SYSTEM FOR ENABLING
`LAYER2 TRANSMISSION OF PDATA
`FRAME BETWEENUSER TERMINAL AND
`SERVICE PROVIDER
`
`(75) Inventors: Atsushi Kitada, Kawasaki (JP); Masato
`Okuda, Kawasaki (JP)
`
`(73) Assignee: Fujitsu Limited, Kawasaki (JP)
`(*) Notice:
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 653 days.
`
`5,909,441 A * 6/1999 Alexander et al. ..... 370,395.54
`5,959,990 A * 9/1999 Frantz et al. ................ 370,392
`6,014,753 A *
`1/2000 Miyamoto et al. ...
`6,035,105 A * 3/2000 McCloghrie et al. ........ TO9,236
`6,112,245 A * 8/2000 Araujo et al. ............... TO9,228
`(Continued)
`FOREIGN PATENT DOCUMENTS
`2001-16255
`1, 2001
`OTHER PUBLICATIONS
`Carrik Solutions Limited, PPOE, (2003) http://www.carricksolu
`tions.com/pppoe.php.
`
`JP
`
`(21) Appl. No.: 10/094,541
`(22) Filed:
`Mar. 8, 2002
`
`(65)
`
`Prior Publication Data
`US 2003/0037163 A1
`Feb. 20, 2003
`Foreign Application Priority Data
`(30)
`Aug. 15, 2001
`(JP)
`............................. 2001-246400
`
`(Continued)
`Primary Examiner Jeffrey Pwu
`Assistant Examiner—Dohm Chankong
`(74) Attorney, Agent, or Firm—Katten Muchin Rosenman
`LLP
`ABSTRACT
`(57)
`In a communication method: processing for designation of a
`service provider, user authentication, and IP address assign
`ment is performed by exchanging management frames
`(51) Int. Cl.
`p
`y
`glng
`9.
`between a user terminal and a service provider through an
`(2006.01)
`G06F 5/16
`access network; and main-signal frames each having an IPoE
`(52) U.S. Cl. ....................... 709/236; 709/223; 709/225;
`form and containing a source Layer 2 address of the user
`709/227; 709/238
`terminal are exchanged between the user terminal and the
`(58) Field of Classification Search ................. 370/400,
`service provider through the access network. The manage
`370/229 230,360,389, 398,506,395.53,
`ment frames have a form which can be discriminated from the
`370/395.54; 709/236. 237,245, 227 229,
`main-signal frames in Layer 2, and the access network holds
`709/213; 713/155, 161, 168, 170, 200 202
`information on correspondences between source Layer 2
`See application file for complete search history.
`addresses and virtual private networks. The access network
`recognizes one of the virtual private networks connected to
`References Cited
`the service provider, based on the source Layer 2 address
`U.S. PATENT DOCUMENTS
`contained in each main-signal frame, and transfers the main
`380,212
`5.627,892 A *
`5, 1997 Kauff
`allilal . . . . . . . . . . . . . . . . . . .
`5,724,510 A * 3/1998 Arndt et al. ................. 2, signal frames in Layer 2 by MAC bridging.
`5,812,552 A * 9/1998 Arora et al. .....
`... 370,395.53
`5,825,772 A * 10/1998 Dobbins et al. ............. 370,396
`
`(56)
`
`
`
`
`
`
`
`11
`USER-SDE SESSION
`MANAGEMENT NT
`12
`MAN-SIGNA
`RANSMISSION AND
`-RECEPT
`UNI
`
`10 USER TERMINA
`
`1 COMMUNICATIONSYSTEM
`\
`
`40 CORE SWITCH
`41
`AG REFERENCE
`UNIT
`
`42
`CORE-SCHN
`RANSFER UN
`
`21
`NETWORK-SIDE
`SESSION
`ANAGEENTUNT
`22
`TRANSFER
`CONTROL UN
`
`20
`SUBSCRIBER-SIDE
`EDGE SWITCH
`
`6
`
`ACCESS
`NETWORK
`
`31
`SECONDTRANSFER
`CONTROL UNIT
`32
`THIRTRANSFER
`CONTROLUNT
`
`
`
`30
`PROYDER-SDE
`EDGE SWITCH
`
`20 Claims, 66 Drawing Sheets
`
`PPP ENCAPSLATON
`
`C.I.E.
`CON
`AIE VAL LIP DATA
`50
`SE) A35s PRESENT
`TRANSFER WITHOUT
`EN is IP DATA PSSA
`
`DELIVERY
`
`----------ee-.
`
`PPP ENCAPSUATION
`
`"E"RSFER
`
`Lenovo
`Ex. 1030 - Page 1
`
`

`

`US 7.469.298 B2
`Page 2
`
`U.S. PATENT DOCUMENTS
`
`2001/0054143 A1* 12/2001 Miyazawa et al. .......... 713,155
`2002/00 13844 A1
`1/2002 Garrett et al. ...
`709,225
`2002/00 13858 A1
`1/2002 Anderson ................... 709/245
`2002/00 19875 A1
`2/2002 Garrett et al. ............... TO9/230
`2002/0026528 A1* 2, 2002
`709/245
`2002/0029275 A1* 3/2002 Selgas et al. ................ 709,227
`2002/0038419 A1
`3/2002 Garrett et al. ............... T13,154
`2003.0035398 A1* 2, 2003 Sato ...........
`370,338
`2003/0154297 A1* 8, 2003 Suzuki et al. ............... 709,229
`2004/0205188 A1* 10, 2004 Ahlard et al. ............... TO9,224
`2005/0038865 A1
`2/2005 Noda et al. ................. TO9,213
`
`
`
`OTHER PUBLICATIONS
`SearchSMB.com Definitions. Address Resolution Protocol (Aug. 14.
`2000) Whatis.com (p. 1).*
`David C. Plummer, An EthernetAddress Resolution Protocol (1982)
`http://www.rfe-editor.org/rfc/rfc826.txt.*
`Cisco Systems Inc, Bridging and Switching Basics, Sep. 13, 2001,
`URL: http://www.cisco.com/univercol/cc/td/doc/cisintwk?ito doc/
`bridging.htm.*
`http://www.networkdictionary.com/networking/EtherType.
`php?PHPSESSID=c2a791.11d 168faf*
`Japanese Office Action dated Jul. 8, 2008, with partial translation,
`from the corresponding Japanese Application.
`Koichiro Okamura. “Establishment of Information Infrastructure
`with an Advantage in Security” Interop Magazine, Softbank Publish
`ing Corp, vol. 11, No. 5, May 1, 2001, pp. 38-49.
`* cited by examiner
`
`6, 181699
`6, 198,741
`6,216,166
`6,243,754
`6.256,314
`6,370,147
`6,393,484
`6,449,279
`6.452,925
`6,493,349
`6,522,627
`6,556,541
`6,587,880
`6,650,646
`6,667,967
`6,711,171
`6,728.246
`6,771,673
`6,816,890
`6,842,860
`6,850,495
`6,873,602
`6,993,026
`7,039,687
`7,174,390
`7,260,648
`2001/0028660
`2001/0044893
`
`1/2001 Crinion et al. ........
`B1
`3f2001 Yoshizawa et al. ...
`B1
`B1 * 4/2001 Zheng et al. ......
`B1
`6, 2001 Guerinet al. ..
`B1* 7/2001 Rodrig et al. .....
`B1
`4, 2002 Beser .........
`B1
`5, 2002 Massarani ...
`B1
`9, 2002 Belser et al.
`B1
`9, 2002 Sistanizadeh et al.
`B1* 12/2002 Casey ...............
`B1* 2/2003 Mauger ...
`B1
`4, 2003 Bare ..........
`B1* 7/2003 Saigo et al. ....
`B1 * 1 1/2003 Galway et al. ...
`B1
`12/2003 Anderson et al. .
`B1
`3f2004 Dobbins et al. ...
`B1 * 4/2004 Egbert et al. ...
`B1
`8, 2004 Baum et al. ....
`B2 11/2004 Noda et al. ....
`B1
`1/2005 Branstad et al. ...
`B1
`2/2005 Baum et al. ....
`B1
`3f2005 Ambe ........
`B1
`1/2006 Baum et al. .......
`B1
`5, 2006 Jamieson et al. ..
`B2
`2/2007 Schulter et al. ...
`B2 * 8/2007 Tingley et al. ....
`A1* 10, 2001 Carolan et al. .
`Al 1 1/2001 Skemer ................
`
`- - - - - - 370,392
`
`... 370,392
`... 709,236
`... TO9,227
`... 709,238
`370/401
`709/227
`... 370,397
`... 370,352
`370/409
`370,230
`370,235
`... TO9,225
`... 370,397
`... 370,351
`... 370/400
`... 370,392
`... 370,535
`... 709,213
`...
`13, 170
`... 370.256
`... 370,254
`... 370,392
`... O9.220
`... O9.245
`... O9.245
`... 370/466
`
`- - - - - - T13,153
`
`Lenovo
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`U.S. Patent
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`Dec. 23, 2008
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`US 7,469,298 B2
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`Dec. 23, 2008
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`Sheet 2 of 66
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`US 7.469.298 B2
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`Dec. 23, 2008
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`Sheet 4 of 66
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`US 7.469.298 B2
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`Dec. 23, 2008
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`US 7.469.298 B2
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`US 7.469.298 B2
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`S25
`
`F. G. 14
`
`Lenovo
`Ex. 1030 - Page 16
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`

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`U.S. Patent
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`Dec. 23, 2008
`
`Sheet 15 of 66
`
`US 7.469.298 B2
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`
`
`
`
`
`
`
`
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`
`TAG 0R UNTAG
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`S31
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`BASED ON PORT ATR BUTE TABLE
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`DSCARD FRAME WHEN
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`S ON
`
`F. G. 15
`
`Lenovo
`Ex. 1030 - Page 17
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`U.S. Patent
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`Dec. 23, 2008
`
`Sheet 16 of 66
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`US 7.469.298 B2
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`Lenovo
`Ex. 1030 - Page 18
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`

`

`U.S. Patent
`U.S. Patent
`
`Dec. 23, 2008
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`Sheet 17 of 66
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`Lenovo
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`Ex. 1030 - Page 19
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`Lenovo
`Ex. 1030 - Page 19
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`
`Dec. 23, 2008
`
`Sheet 18 of 66
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`US 7,469,298 B2
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`Ex. 1030 - Page 20
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`Lenovo
`Ex. 1030 - Page 20
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 19 of 66
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`US 7,469,298 B2
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`
`Ex. 1030 - Page 21
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`Lenovo
`Ex. 1030 - Page 21
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`

`

`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 20 of 66
`
`US 7.469.298 B2
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`LCP Echo-Request/Reply
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`DESTINATION ADDR (cont)
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`F. G. 20
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`Lenovo
`Ex. 1030 - Page 22
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`

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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 21 of 66
`
`US 7.469.298 B2
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`O
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`LCP Terminate-ACK Data: NFORMATION IND CATING
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`F. G. 21
`
`Lenovo
`Ex. 1030 - Page 23
`
`

`

`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 22 of 66
`
`US 7,469,298 B2
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`Lenovo
`
`Ex. 1030 - Page 24
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`Lenovo
`Ex. 1030 - Page 24
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`
`
`
`

`

`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 23 of 66
`
`US 7.469.298 B2
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`START
`CONNECT ON
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`F. G. 23
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`
`Lenovo
`Ex. 1030 - Page 25
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`

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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 24 of 66
`
`US 7.469,298 B2
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`Lenovo
`Ex. 1030 - Page 26
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`

`

`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 25 of 66
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`US 7.469.298 B2
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`Lenovo
`Ex. 1030 - Page 27
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`
`Dec. 23, 2008
`
`Sheet 26 of 66
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`US 7,469,298 B2
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`Lenovo
`
`Ex. 1030 - Page 28
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`Lenovo
`Ex. 1030 - Page 28
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`
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`

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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 27 of 66
`
`US 7,469,298 B2
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`Lenovo
`
`Ex. 1030 - Page 29
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`Lenovo
`Ex. 1030 - Page 29
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`
`

`

`U.S. Patent
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`Sheet 28 of 66
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`
`
`US 7,469,298 B2
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`Lenovo
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`Ex. 1030 - Page 30
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`Lenovo
`Ex. 1030 - Page 30
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 29 of 66
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`US 7.469.298 B2
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`Lenovo
`Ex. 1030 - Page 31
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`

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`U.S. Patent
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`US 7.469.298 B2
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`Lenovo
`Ex. 1030 - Page 32
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`U.S. Patent
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`Dec. 23, 2008
`
`Sheet 31 of 66
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`US 7,469,298 B2
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`Lenovo
`
`Ex. 1030 - Page 33
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`Lenovo
`Ex. 1030 - Page 33
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 32 of 66
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`US 7,469,298 B2
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`Lenovo
`
`Ex. 1030 - Page 34
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`Lenovo
`Ex. 1030 - Page 34
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 33 of 66
`
`US 7.469,298 B2
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`Lenovo
`Ex. 1030 - Page 35
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`

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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 34 of 66
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`US 7.469.298 B2
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`
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`
`Lenovo
`Ex. 1030 - Page 36
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 35 of 66
`
`US 7.469.298 B2
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`F. G. 35A
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`REGISTERED AS FIXED WALUES
`(ALTHOUGH PROVIDERS
`NEED NOT KNOW VLAN-DS)
`
`PORT WID TABLE (IN PROVIDER-SIDE EDGE L2SW)
`FG. 35B
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`ADDRESSADDRESS
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`ARP RELAY TABLES (N PROVIDER-S DE EDGE L2SW)
`FG. 35C
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`FORWARDING TABLE (INDEPENDENTLY PROVIDED FOR EACH VLAN-D)
`F. G. 35D
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`PORT
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`FILTER ING
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`TAG/UNTAG
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`6
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`IP, ARP
`
`on
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`PORT ATTRIBUTE TABLE
`(WHICH MAY BE INDEPENDENTLY PROVIDED FOR EACH VLAN-D)
`
`Lenovo
`Ex. 1030 - Page 37
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`U.S. Patent
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`Dec. 23, 2008
`
`Sheet 36 of 66
`
`US 7.469.298 B2
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`Å:SSENCICIW OWW
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`Lenovo
`Ex. 1030 - Page 38
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 37 of 66
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`US 7.469.298 B2
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`
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`Lenovo
`Ex. 1030 - Page 39
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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 38 of 66
`
`US 7.469.298 B2
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`
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`Lenovo
`Ex. 1030 - Page 40
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`

`

`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 39 of 66
`
`US 7.469.298 B2
`
`
`
`TRANSMIT TO PROVIDER RADIUS
`SERVER CORRESPONDING TO
`Radius ACC eSS-Request
`C61
`"user-name(provider-name"
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`40-1
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`ATTACH WLAN-D
`"Radius Access-Accept"
`AS ATTRIBUTE
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`10-?
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`51-152-2
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`REGISTER RECEIVED
`VLAN-D N
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`
`Ether 11 PUDP
`
`A : AUTHEN CATED WLAN-D
`B : VLAN for SP-X (VLAN-ID=10)
`C : VLAN for SP-Y (WLAN-ID=11)
`F. G. 39
`
`Lenovo
`Ex. 1030 - Page 41
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`

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`U.S. Patent
`
`Dec. 23, 2008
`
`Sheet 40 of 66
`
`US 7,469,298 B2
`
`
`
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`Dec. 23, 2008
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`U.S. Patent
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`U.S. Patent
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`Dec. 23, 2008
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`Sheet 47 of 66
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`U.S. Patent
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`Dec. 23, 2008
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`Sheet 48 of 66
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`US 7.469.298 B2
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`U.S. Patent
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`U.S. Patent
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`Dec. 23, 2008
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`Dec. 23, 2008
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`U.S. Patent
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`Dec. 23, 2008
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`Sheet 63 of 66
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`US 7,469,298 B2
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