Patent USRE41750 - Apparatus and method for redirection of network management messages in a ...

USO0RE41750E (19) United States (12) R€lSSH€d Patent (10) Patent Number: US RE41,750 E Christy (45) Date of Reissued Patent: *Sep. 21, 2010 (54) APPARATUS AND METHOD FOR 5,241,682 A 8/1993 Bryant etal. REDIRECTION OF NETWORK 2 1%; §_11¢1Y<1“/1411 MANAGEMENT MESSAGES IN A CLUSTER 7 7 In et a 7 5,287,103 A 2/1994 Kasprzyk et al. OF NETWORK DEVICES 5,319,644 A 6/1994 Liang (75) Inventor: James E. Christy, Sunnyvale, CA (US) 5367535 A U/£94 t_Bauj)eta1' on inue (73) Assignee: (€jsSc)o Technology, Inc., San Jose, CA FOREIGN PATENT DOCUMENTS EP 0 567 217 10/1993 Notice? This patent is subject to a tenninal dis- EP 690384 A2 * 1/1996 Claimer WO 99/53408 * 10/1999 i WO WO 200044128 A1 * 7/2000 WO WO 200217094 A1 * 2/2002 (21) Appl.No.: 10/942,081 wo wo 2002235801 A2 * 5/2002 _ WO WO 2002102012 A2 * 12/2002 (22) Filed: Sep. 14, 2004 OTHER PUBLICATIONS

Hinden, R. et al.,“IP Vesion 6 Addressing Architecture”,
RFC 1884, p.1-18, Dec. 1995.*

(Continued)

Primary Examiner—Douglas B Blair
(74) Attorney, Agent, or Firm—BainwoodHuang

(57) ABSTRACT

A method manages a cluster of network devices each having an intra-cluster identifier. The method includes (a) selecting a plurality of network devices to fomi a cluster, (b) selecting a first network device to be a commander network device having a public IP address, each of the remaining network devices being a cluster member network device and having a non-public network address, (c) receiving at the commander network device a network management request message from a management console, the message including a source address field containing an IP address of the management console, a destination address field containing the IP address of the commander network device, a request identification field containing an original request identifier uniquely identifying the message, and an intra-cluster identifier, and (d) forwarding the message to the-cluster member network device identified by the intra-cluster identifier using the nonpubic network address of the cluster member network

device.

98 Claims, 11 Drawing Sheets

/910
/920

/BSO
/940

/ B50

/980

/970

SNMP RESPO
THE COMMANDER DEVICE

5,371,852 5,390,170 5,394,402 5,430,715 5,473,607 5,502,725 5,530,963 5,594,732 5,610,910 5,617,421 5,671,354 5,678,006 5,715,394 5,734,654 5,764,910 5,793,763 5,802,047 5,812,529 5,812,776 5,835,720 5,835,725 5,845,087 5,854,901 5,867,666 5,872,783 5,905,736 5,918,016 5,968,116 5,974,453 5,978,845 5,991,810 5,999,536 6,003,077 6,006,264 6,011,910 6,012,088 6,018,770 6,021,429 6,023,724 6,047,376 6,055,236 6,091,951 6,092,196 6,119,160 6,122,657 6,266,335 6,295,276 6,330,602 6,339,595 6,360,258 6,360,262 6,378,053 6,449,647 6,470,389 6,633,560 6,636,499 6,654,796 6,725,264 6,779,039 6,831,918 6,856,591 6,895,433 6,917,626

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* cited by examiner

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