Distributing service sessions
First Claim
1. A system for dynamically distributing a service session from a client device, the system comprising:
- a plurality of forwarding nodes; and
a gateway node configured to;
receive, from the client device, a packet of the service session, the packet being associated with a source network address;
determine that the packet matches a service address in a forwarding policy;
make a first selection by selecting, from the plurality of forwarding nodes, at least two forwarding nodes based on the service address and the forwarding policy, the at least two forwarding nodes serving the service address;
upon selecting the at least two forwarding nodes, determine that the forwarding policy includes a first criterion instructing to select between the at least two forwarding nodes based on the source network address of the packet;
based on the determining, making a second selection by selecting a first forwarding node of the at least two forwarding nodes based on the source network address and the forwarding policy for sending the packet to the first forwarding node, the first forwarding node serving the source network address;
determine that the forwarding policy includes a second criterion with instructions to forward both the packet and further packets associated with the service session through an identical forwarding path, the identical forwarding path including a plurality of nodes, each of the plurality of nodes being configured to send the packet and the further packets forward along the identical forwarding path, wherein both the packet and the further packets comprise the source network address and a session identifier associated with the service session, and wherein the source network address does not include a cookie;
update the forwarding policy by setting the first forwarding node as selectable for forwarding the further packets associated with the service session and comprising the source network address and the session identifier;
wherein the first forwarding node is configured to;
receive the packet of the service session from the gateway node;
determine that the packet matches the service address in the forwarding policy;
make a first selection by selecting, from a plurality of servicing nodes, at least two servicing nodes based on the service address and the forwarding policy, the at least two servicing nodes serving the service address;
upon selecting the at least two servicing nodes, determine that the forwarding policy includes a third criterion instructing to select between the at least two servicing nodes based on the source network address of the packet;
based on the determining, select a first servicing node of the at least two servicing nodes based on the source network address and the forwarding policy, the first servicing node serving the source network address;
determine that the forwarding policy includes the second criterion with the instructions to forward both the packet and the further packets comprising the session identifier through the identical forwarding path;
update the forwarding policy by setting the first servicing node as selectable for forwarding the further packets, wherein the first forwarding node and the first servicing node constitute the plurality of nodes of the identical forwarding path for the packet and the further packets comprising the source network address and the session identifier and are configured to send the packet and the further packets forward along the identical forwarding path; and
send the packet to the first servicing node for forwarding the packet, by the first servicing node, directly to a server of a plurality of servers, wherein the first servicing node selects the server based on a service policy.
1 Assignment
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Accused Products
Abstract
Provided are methods and systems for dynamically distributing a service session from a client device. The method may commence with receiving a packet associated with the service session from the client device by a gateway node. The method may include determining that the packet matches a service address in a forwarding policy. The method may continue with selecting one of a plurality of forwarding nodes for sending the packet to the one of the plurality of forwarding nodes. The method may include receiving the packet of the service session by the one of the plurality of forwarding nodes. The method may continue with determining that the packet matches the service address serviced by a servicing node of a plurality of servicing nodes. The method may further include sending the packet to the servicing node for forwarding the packet to a server by the servicing node.
500 Citations
19 Claims
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1. A system for dynamically distributing a service session from a client device, the system comprising:
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a plurality of forwarding nodes; and a gateway node configured to; receive, from the client device, a packet of the service session, the packet being associated with a source network address; determine that the packet matches a service address in a forwarding policy; make a first selection by selecting, from the plurality of forwarding nodes, at least two forwarding nodes based on the service address and the forwarding policy, the at least two forwarding nodes serving the service address; upon selecting the at least two forwarding nodes, determine that the forwarding policy includes a first criterion instructing to select between the at least two forwarding nodes based on the source network address of the packet; based on the determining, making a second selection by selecting a first forwarding node of the at least two forwarding nodes based on the source network address and the forwarding policy for sending the packet to the first forwarding node, the first forwarding node serving the source network address; determine that the forwarding policy includes a second criterion with instructions to forward both the packet and further packets associated with the service session through an identical forwarding path, the identical forwarding path including a plurality of nodes, each of the plurality of nodes being configured to send the packet and the further packets forward along the identical forwarding path, wherein both the packet and the further packets comprise the source network address and a session identifier associated with the service session, and wherein the source network address does not include a cookie; update the forwarding policy by setting the first forwarding node as selectable for forwarding the further packets associated with the service session and comprising the source network address and the session identifier; wherein the first forwarding node is configured to; receive the packet of the service session from the gateway node; determine that the packet matches the service address in the forwarding policy; make a first selection by selecting, from a plurality of servicing nodes, at least two servicing nodes based on the service address and the forwarding policy, the at least two servicing nodes serving the service address; upon selecting the at least two servicing nodes, determine that the forwarding policy includes a third criterion instructing to select between the at least two servicing nodes based on the source network address of the packet; based on the determining, select a first servicing node of the at least two servicing nodes based on the source network address and the forwarding policy, the first servicing node serving the source network address; determine that the forwarding policy includes the second criterion with the instructions to forward both the packet and the further packets comprising the session identifier through the identical forwarding path; update the forwarding policy by setting the first servicing node as selectable for forwarding the further packets, wherein the first forwarding node and the first servicing node constitute the plurality of nodes of the identical forwarding path for the packet and the further packets comprising the source network address and the session identifier and are configured to send the packet and the further packets forward along the identical forwarding path; and send the packet to the first servicing node for forwarding the packet, by the first servicing node, directly to a server of a plurality of servers, wherein the first servicing node selects the server based on a service policy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for dynamically distributing a service session from a client device, the method comprising:
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receiving, by a gateway node, from the client device, a packet of the service session, the packet being associated with a source network address; determining, by the gateway node, that the packet matches a service address in a forwarding policy; making, by the gateway node, a first selection by selecting, from a plurality of forwarding nodes, at least two forwarding nodes based on the service address and the forwarding policy, the at least two forwarding nodes serving the service address; upon selecting the at least two forwarding nodes, determining, by the gateway node, that the forwarding policy includes a first criterion instructing to select between the at least two forwarding nodes based on the source network address of the packet; based on the determining, making, by the gateway node, a second selection by selecting, a first forwarding node of the at least two forwarding nodes based on the source network address and the forwarding policy for sending, by the gateway node, the packet to the first forwarding node, the first forwarding node serving the source network address; determining, by the gateway node, that the forwarding policy includes a second criterion with instructions to forward both the packet and further packets associated with the service session through an identical forwarding path, the identical forwarding path including a plurality of nodes, each of the plurality of nodes being configured to send the packet and the further packets forward along the identical forwarding path, wherein both the packet and the further packets comprise the source network address and a session identifier associated with the service session, and wherein the source network address does not include a cookie; updating, by the gateway node, the forwarding policy by setting the first forwarding node as selectable for forwarding the further packets associated with the service session and comprising the source network address and the session identifier; receiving, by the first forwarding node, the packet of the service session from the gateway node; determining, by the first forwarding node, that the packet matches the service address in the forwarding policy; making, by the first forwarding node, a first selection by selecting, from a plurality of servicing nodes, at least two servicing nodes based on the service address and the forwarding policy, the at least two servicing nodes serving the service address; upon selecting the at least two servicing nodes, determining, by the first forwarding node, that the forwarding policy includes a third criterion instructing to select between the at least two servicing nodes based on the source network address of the packet; based on the determining, selecting, by the first forwarding node, a first servicing node of the at least two servicing nodes based on the source network address and the forwarding policy, the first servicing node serving the source network address; determining, by the first forwarding node, that the forwarding policy includes the second criterion with the instructions to forward both the packet and the further packets comprising the session identifier through the identical forwarding path; updating, by the first forwarding node, the forwarding policy by setting the first servicing node as selectable for forwarding the further packets comprising the source network address and the session identifier, wherein the first forwarding node and the first servicing node constitute the plurality of nodes of the identical forwarding path for the packet and the further packets comprising the session identifier and are configured to send the packet and the further packets forward along the identical forwarding path; and sending, by the first forwarding node, the packet to the first servicing node for forwarding the packet, by the first servicing node, directly to a server of a plurality of servers, wherein the first servicing node selects the server based on a service policy. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system for dynamically distributing a service session from a client device, the system comprising:
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a plurality of forwarding nodes; a plurality of servicing nodes; and a gateway node configured to; receive, from a network controller, a forwarding policy, the forwarding policy comprising a service address serviced by one or more of the plurality of forwarding nodes; receive, from the client device, a packet of the service session, the packet being associated with a source network address; determine that the packet matches the service address in the forwarding policy; make a first selection by selecting, from the plurality of forwarding nodes, at least two forwarding nodes based on the service address and the forwarding policy, the at least two forwarding nodes serving the service address; upon selecting the at least two forwarding nodes, determine that the forwarding policy includes a first criterion instructing to select between the at least two forwarding nodes based on the source network address of the packet; based on the determining, make a second selection by selecting a first forwarding node of the at least two forwarding nodes based on the source network address and the forwarding policy for sending the packet to the first forwarding node, the first forwarding node serving the source network address; determine that the forwarding policy includes a second criterion with instructions to forward both the packet and further packets associated with the service session through an identical forwarding path, the identical forwarding path including a plurality of nodes, each of the plurality of nodes being configured to send the packet and the further packets forward along the identical forwarding path, wherein both the packet and the further packets comprise the source network address and a session identifier associated with the service session, and wherein the source network address does not include a cookie; update the forwarding policy by setting the first forwarding node as selectable for forwarding the further packets associated with the service session and comprising the source network address and the session identifier; wherein the first forwarding node is configured to; receive, from the network controller, the forwarding policy, the forwarding policy further comprising the service address serviced by the plurality of servicing nodes; receive the packet of the service session from the gateway node; determine that the packet matches the service address in the forwarding policy; make a first selection by selecting, from the plurality of servicing nodes, at least two servicing nodes based on the service address and the forwarding policy, the at least two servicing nodes serving the service address; upon selecting the at least two servicing nodes, determine that the forwarding policy includes a third criterion instructing to select between the at least two servicing nodes based on the source network address of the packet; based on the determining, select a first servicing node of the at least two servicing nodes based on the source network address and the forwarding policy, the first servicing node serving the source network address; determine that the forwarding policy includes the second criterion with the instructions to forward both the packet and the further packets comprising the session identifier through the identical forwarding path; update the forwarding policy by setting the first servicing node as selectable for forwarding the further packets comprising the source network address and the session identifier, wherein the first forwarding node and the first servicing node constitute the plurality of nodes of the identical forwarding path for the packet and the further packets comprising the session identifier and are configured to send the packet and the further packets forward along the identical forwarding path; and send the packet to the first servicing node; and wherein the first servicing node of the plurality of servicing nodes is configured to; receive, from the network controller, a service policy for selecting a server from a plurality of servers; receive the packet from the first forwarding node; determine whether the packet is a service request packet; select, based on the service policy, the server to serve the service session; and forward the packet directly to the server of the plurality of servers.
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Specification