Method and system for advertising SRLG information between multiple layers of communication network

A system for advertising Shared Risk Link Group (SRLG) information between multiple layers of a communication network, wherein the system comprises:

• an optical domain controller (100) for an optical domain and an IP domain controller (200) for an IP domain;
• wherein the optical domain controller (100) is configured to:
• determine SRLG information associated with an optical domain and SRLG information associated with IP domain to be shared with the IP domain controller (200);
• determine layer identifiers to establish a multi-protocol enabled Border Gateway Protocol (BGP) session between the optical domain and the IP domain, wherein the layer identifiers indicate the advertising of the SRLG information associated with the optical domain and the SRLG information associated with the IP domain;
• establish the multi-protocol enabled BGP session between the optical domain controller (100) and the IP domain controller (200) based on the layer identifiers;
• and
• advertise the SRLG information associated with the optical domain and the SRLG information associated with the IP domain to the IP domain controller (200) over the established multi-protocol enabled BGP session.

An optical domain controller (100) for advertising Shared Risk Link Group (SRLG) information between multiple layers of a communication network, wherein the optical domain controller (100) comprises:

• a memory (120);
• a processor (140) coupled to the memory (120);
• a communicator (160) coupled to the memory (120) and the processor (140);
• an Optical domain SRLG manager (180) coupled to the memory (120), the processor (140) and the communicator (160), and wherein the Optical domain SRLG manager (180) is configured to:
• determine SRLG information associated with an optical domain and SRLG information associated with IP domain to be shared with an IP domain controller (200);
• determine layer identifiers to establish a multi-protocol enabled Border Gateway Protocol (BGP) session between the optical domain and the IP domain, wherein the layer identifiers indicate the advertising of the SRLG information associated with the optical domain and the SRLG information associated with the IP domain;
• establish the multi-protocol enabled BGP session between the optical domain controller (100) and the IP domain controller (200) based on the layer identifiers;
• and
• advertise the SRLG information associated with the optical domain and the SRLG information associated with the IP domain to the IP domain controller (200) over the established multi-protocol enabled BGP session.

A Computer Program Product (CPP) for advertising Shared Risk Link Group (SRLG) information between multiple layers of a communication network, wherein the CPP comprises:

• a computer executable program code recorded on a computer readable non-transitory storage medium, wherein said computer executable program code when executed causing the actions including:
• determining SRLG information associated with an optical domain and SRLG information associated with IP domain to be shared with an IP domain controller (200);
• determining layer identifiers to establish a multi-protocol enabled Border Gateway Protocol (BGP) session between the optical domain and the IP domain, wherein the layer identifiers indicate the advertising of the SRLG information associated with the optical domain and the SRLG information associated with the IP domain;
• establishing the multi-protocol enabled BGP session between the optical domain controller (100) and the IP domain controller (200) based on the layer identifiers;
• and
• advertising the SRLG information associated with the optical domain and the SRLG information associated with the IP domain to the IP domain controller (200) over the established multi-protocol enabled BGP session.