Method for traffic engineering on networks made of asymmetrical network switches
First Claim
1. An asymmetrical network switch, comprising:
- a processor; and
a non-transitory computer readable medium, including;
instructions executable by the processor to auto-discover and advertise into a traffic engineering, TE, domain a switch detailed connectivity matrix, SDCM, containing for each allowed switching combination of interfaces of said asymmetrical network switch at least one switch detailed connectivity matrix entry, SDCME,each SDCME representing a potential connection internal to said asymmetrical network switch and interconnecting the interfaces of said interface switching combination,an SDCME advertisement by said switch including a switch detailed connectivity matrix entry cost vector, SDCME CV, comprising a set of attributes describing cost penalties as various service characteristics that a network service incurs if said network service selects a path or a tree traversing the asymmetrical switch in accordance with the SDCME, andan auto-discovery unit adapted to auto-discover cost attributes of the said potential connection internal(s) to said asymmetrical network switch, wherein the cost attributes include at least one of a data propagation delay penalty, a data loss ratio penalty, a traffic engineering, TE, cost penalty, or an optical signal quality penalty.
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Abstract
An asymmetrical network switch adapted to auto-discover and advertise into a traffic engineering, TE, domain a switch detailed connectivity matrix, SDCM, containing for each allowed switching combination of interfaces of said asymmetrical network switch at least one switch detailed connectivity matrix entry, SDCME, wherein each said SDCME represents an internal to said asymmetrical network switch potential connection interconnecting the interfaces of said interface switching combination, wherein a SDCME advertisement includes a switch detailed connectivity matrix entry cost vector, SDCME CV, which comprises a set of attributes describing cost penalties in terms of various service characteristics that a network service incurs if it selects a path or a tree traversing the asymmetrical switch in accordance with the SDCME.
6 Citations
17 Claims
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1. An asymmetrical network switch, comprising:
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a processor; and a non-transitory computer readable medium, including; instructions executable by the processor to auto-discover and advertise into a traffic engineering, TE, domain a switch detailed connectivity matrix, SDCM, containing for each allowed switching combination of interfaces of said asymmetrical network switch at least one switch detailed connectivity matrix entry, SDCME, each SDCME representing a potential connection internal to said asymmetrical network switch and interconnecting the interfaces of said interface switching combination, an SDCME advertisement by said switch including a switch detailed connectivity matrix entry cost vector, SDCME CV, comprising a set of attributes describing cost penalties as various service characteristics that a network service incurs if said network service selects a path or a tree traversing the asymmetrical switch in accordance with the SDCME, and an auto-discovery unit adapted to auto-discover cost attributes of the said potential connection internal(s) to said asymmetrical network switch, wherein the cost attributes include at least one of a data propagation delay penalty, a data loss ratio penalty, a traffic engineering, TE, cost penalty, or an optical signal quality penalty. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A network, comprising:
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at least one asymmetrical network switch adapted to auto-discover and advertise into a traffic engineering, TE, domain a switch detailed connectivity matrix, SDCM, containing for each allowed switching combination of interfaces of said asymmetrical network switch at least one switch detailed connectivity matrix entry, SDCME, each SDCME representing a potential connection internal to said asymmetrical network switch and interconnecting the interfaces of said interface switching combination, and an SDCME advertisement by said switch including a switch detailed connectivity matrix entry cost vector, SDCME CV, comprising a set of attributes describing cost penalties in terms of various service characteristics that a network service incurs if said network service selects a path or a tree traversing the asymmetrical switch in accordance with the SDCME, the switch further comprising an auto-discovery unit adapted to auto-discover cost attributes of said potential connection(s) internal to said asymmetrical network switch, wherein the cost attributes include at least one of a data propagation delay penalty, a data loss ratio penalty, a traffic engineering, TE, cost penalty, or an optical signal quality penalty; and at least one network path computer adapted to calculate an enhanced network service path or tree traversing at least one asymmetrical network switch honoring the switch detailed connectivity matrix entry cost vectors, SDCME CVs, advertised by the asymmetrical network switches within respective switch detailed connectivity matrices, SDCMs. - View Dependent Claims (13, 14)
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15. A method for traffic engineering on networks made of asymmetrical network switches, comprising:
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auto-discovering and advertising by at least one of the asymmetrical network switches into a traffic engineering, TE, domain a switch detailed connectivity matrix, SDCM, containing for each allowed switching combination of interfaces of said asymmetrical network switch at least one switch detailed connectivity matrix entry, SDCME, and a corresponding switch detailed connectivity matrix entry cost vector, SDCME CV; providing by at least one of the switches each said SDCME each representing a potential connection internal to said asymmetrical network switch potential interconnecting the interfaces of said interface switching combination; providing by at least one of the switches corresponding each said corresponding SDCME CV, each SDCME CV comprising a set of attributes describing cost penalties in terms of various service characteristics that a network service incurs if said network service selects a path or a tree traversing the asymmetrical switch in accordance with the respective SDCME; and wherein the auto-discovering step comprises auto-discovering cost attributes of said potential connection internal to said asymmetrical network switch, wherein the cost attributes include at least one of a data propagation delay penalty, a data loss ratio penalty, a traffic engineering, TE, cost penalty, or an optical signal quality penalty. - View Dependent Claims (16, 17)
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Specification