Method for address mapping in a network access system and a network access device for use therewith
First Claim
Patent Images
1. A method of implementing Realm Specific Internet Protocol in a network access system, the method comprising the steps of:
- (a) providing a network access system comprising a plurality of network subdevices in a chassis and connected by an internal network, the plurality including a first network subdevice and a second network subdevice, the second network subdevice having an interface on an external network;
(b) requesting, via the internal network, by the first network subdevice using a first protocol, a common external network address and one or more ports from the second network subdevice to identify the first network subdevice during communications with the external network;
(c) receiving, via the internal network, the common external network address and an identifier of the one or more ports at the first network subdevice from the second network subdevice;
(d) updating entries in an address-to-address table maintained by the second network subdevice to reflect assignment of the common external network address and one or more ports to the first network subdevice; and
(e) creating a combination network address for the first network subdevice with the identifier of the one or more ports and the common external network address, the combination network address identifying the first network subdevice for communications with the external network by way of the interface on the external network.
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Abstract
A method to support the assignment of a globally unique network public address and, optionally, a number of locally unique ports to a first private network subdevice having a private network address on a network access system from a second private network subdevice having a public network address using Realm Specific Internet Protocol, wherein the public network address is used by the first private network device to communicate with network devices on an external network.
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Citations
21 Claims
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1. A method of implementing Realm Specific Internet Protocol in a network access system, the method comprising the steps of:
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(a) providing a network access system comprising a plurality of network subdevices in a chassis and connected by an internal network, the plurality including a first network subdevice and a second network subdevice, the second network subdevice having an interface on an external network; (b) requesting, via the internal network, by the first network subdevice using a first protocol, a common external network address and one or more ports from the second network subdevice to identify the first network subdevice during communications with the external network; (c) receiving, via the internal network, the common external network address and an identifier of the one or more ports at the first network subdevice from the second network subdevice; (d) updating entries in an address-to-address table maintained by the second network subdevice to reflect assignment of the common external network address and one or more ports to the first network subdevice; and (e) creating a combination network address for the first network subdevice with the identifier of the one or more ports and the common external network address, the combination network address identifying the first network subdevice for communications with the external network by way of the interface on the external network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A network access device, comprising in combination within a chassis:
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(a) an internal network; (b) a first network subdevice comprising a network client on the internal network; and
,(c) a second network subdevice on the internal network comprising a network address server for allocating an external network address and one or more ports to the first network subdevice, wherein the second network subdevice has an internal network address for communicating with other network subdevices on the internal network and an external network address for communicating with a plurality of network devices on an external network, and wherein the network address server is used to allocate the external network address to the first network subdevice on the internal network, wherein the first network subdevice has a first internal network address for communicating with other network subdevices on the internal network and requests from the second network subdevice allocation of the external network address and one or more ports for communicating with a plurality of network devices on the external network; and wherein the first network subdevice further comprises an IP interface and the client of the first network subdevice is a Realm Specific Internet Protocol host.
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15. A network access device, comprising in combination within a chassis:
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(a) an internal network; (b) a first network subdevice comprising a network client on the internal network; and
,(c) a second network subdevice on the internal network comprising a network address server for allocating an external network address and one or more ports to the first network subdevice, wherein the second network subdevice has an internal network address for communicating with other network subdevices on the internal network and an external network address for communicating with a plurality of network devices on an external network, and wherein the network address server is used to allocate the external network address to the first network subdevice on the internal network, wherein the first network subdevice has a first internal network address for communicating with other network subdevices on the internal network and requests from the second network subdevice allocation of the external network address and one or more ports for communicating with a plurality of network devices on the external network; and wherein the second network subdevice further comprises an IP interface and the network address server of the second network subdevice is a Realm Specific Internet Protocol gateway.
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16. A network access device, comprising in combination within a chassis:
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(a) an internal network; (b) a first network subdevice comprising a network client on the internal network; and
,(c) a second network subdevice on the internal network comprising a network address server for allocating an external network address and one or more ports to the first network subdevice, wherein the second network subdevice has an internal network address for communicating with other network subdevices on the internal network and an external network address for communicating with a plurality of network devices on an external network, and wherein the network address server is used to allocate the external network address to the first network subdevice on the internal network, wherein the first network subdevice has a first internal network address for communicating with other network subdevices on the internal network and requests from the second network subdevice allocation of the external network address and one or more ports for communicating with a plurality of network devices on the external network; and wherein the first network subdevice further comprises a data application and a device control application. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification