Patent EP0959601A1 successfully refreshed from Google Patents.
EP0959601A1
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EP
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A system and method for server selection for mirrored sites
Assignee: Sun Microsystems Inc
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Filing: 1999-05-12
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Granted: —
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Expires: 2019-05-12
Abstract
Abstract The present invention is a system and method for providing server selection for mirrored sites. In a preferred embodiment, a user requests an address via a local name service, and the local name service requests the address from a server, examples of which include an authoritative name server, and a Optimizer Name Server (ONS). If the ONS has already calculated a best route which applies to this user, and a predetermined time applying to the best route has not yet expired, then the ONS replies to the user with the best route server. If, however, the best route has not been determined or the predetermined time for the best route has expired, then the ONS replies to the user via a selection scheme, such as a round robin scheme, and also initiates a best route determination to determine which is the best route for this user.
Inventors
- 👤 Abhishek Chauhan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:33
CPC Classifications
H; H04; H04L; H04L45/00; H04L45/26; H04L61/00; H04L61/45; H04L61/4505; H04L61/4511; H04L67/00; H04L67/01; H04L67/10; H04L67/1001; H04L67/1004; H04L67/101; H04L67/1017
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
A method for computer server selection in a computer network including a
plurality of servers, the method comprising: determining whether a best route has been determined; selecting one of the plurality of servers as a best route server if the best route
has been determined; and selecting one of the plurality of servers as a selection scheme server if the best
route has not been determined, the selection of the selection scheme server being
determined via a selection scheme, wherein the selection scheme does not include
determining the best route.
Claim 2
Dependent Claim
38 words
The method of claim 1, further including: determining if a predetermined time has expired if the best route has been
determined; and selecting a selection scheme server by using a selection scheme if the
predetermined time has expired.
Claim 3
Dependent Claim
16 words
The method of claim 1 or 2, wherein the selection scheme is a round robin
scheme.
Claim 4
Independent Claim
46 words
The method of any of the preceding claims further including: determining the best route if the best route has not been determined, wherein
the determination of best route includes determining a round trip time from one of the
plurality of servers to a local name server.
Claim 5
Dependent Claim
31 words
The method of claim 4, wherein the determination of the round trip time
includes sending a name query to the local name server and receiving message from
the local name server.
Claim 6
Dependent Claim
34 words
The method of claim 4, wherein the determination of the round trip time
includes sending an echo packet to the local name server and receiving a returning
echo packet from the local name server.
Claim 7
Independent Claim
55 words
The method of any of the preceding claims, wherein the determination of best
route includes determining a first round trip time from a first one of the plurality of
servers to a local name server and a second round trip time from a second one of the
plurality of servers to the local name server.
Claim 8
Dependent Claim
33 words
The method of claim 7, wherein the first round trip time and the second round
trip time is compared to determine which one of the first and second servers has the
best route.
Claim 9
Independent Claim
30 words
The method of any of the preceding claims, wherein the best route includes a
shortest round trip time between one of the plurality of servers and a local name
server.
Claim 10
Independent Claim
96 words
A system for computer server selection in a computer network including a
plurality of servers, the system comprising: means for determining whether a best route has been determined; means for selecting one of the plurality of servers as a best route server if the
best route has been determined; and means for selecting one of the plurality of servers as a selection scheme server
if the best route has not been determined, the selection of the selection scheme server
being determined via a selection scheme, wherein the selection scheme does not
include determining the best route.
Claim 11
Independent Claim
93 words
A system for computer server selection in a computer network, the system
comprising: a plurality of servers; and an authoritative name server coupled to the plurality of servers, wherein the
authoritative name server determines whether a best route has been determined, and
selects one of the plurality of servers as a best route server if the best route has been
determined; and selects one of the plurality of servers as a selection scheme server, if
the best route has not been determined, wherein the selection scheme does not include
determining the best route.
Claim 12
Dependent Claim
105 words
A computer program product for computer server selection in a computer
network including a plurality of servers, comprising: computer code determining whether a best route has been determined; computer code selecting one of the plurality of servers as a best route server if
the best route has been determined; computer code selecting one of the plurality of servers as a selection scheme
server if the best route has not been determined, the selection of the selection scheme
server being determined via a selection scheme, wherein the selection scheme does
not include determining the best route; and a computer readable medium that stores the computer codes.
References Cited (Backward Citations)
WO1998018076A1
Cited
WO1998031107A2
Cited
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