发明名称 Server load balancing using IP option field approach to identify route to selected server
摘要 A method of routing data from a client through one or more load-balancing nodes to a selected load-balanced server among a plurality of servers in a network involves: receiving, at a last load balancing node associated with a selected server among the plurality of servers, a first packet of a server reply to a request from the client; setting a first flag value in the first packet of the server reply; storing one or more identifiers of ingress interfaces on which the packet arrives, in a send path list for server load balancing, as the first packet of the server reply is routed from the last load balancing node to the client using hop-by-hop decisions; receiving one or more subsequent packets of the client request; setting a second flag value in each of the subsequent packets; and forwarding the subsequent packets to the selected server only on a route that is defined by the send path list and without hop-by-hop routing decisions. As a result, packet flows are rapidly routed from the same client to the same server without time-consuming hop-by-hop routing decisions or repeated load-balancing decisions.
申请公布号 US7088718(B1) 申请公布日期 2006.08.08
申请号 US20020101665 申请日期 2002.03.19
申请人 CISCO TECHNOLOGY, INC. 发明人 SRIVASTAVA SUNIL K.
分类号 H04L12/28 主分类号 H04L12/28
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