SYSTEM AND METHOD FOR ADDING ROUTING PATHS IN A NETWORK
Aspects of the present disclosure involve systems, methods, computer program products, and the like, for providing multiple egress points from a telecommunications network for a client of the network. In particular, the process and system allows for multiple provider edges of the network to utilize a route reflector server to provide a border gateway protocol (BGP) route to other provider edges in the network. Further, the multiple provider edges may each announce similar interior gateway protocol (IGP) routes through the network such that a provider edge receiving a packet intended for the customer network may select from the multiple IGP routes to provide the intended packet to the customer network. In this manner, the receiving provider edge may load balance among the various connections of the customer network to the telecommunications network.
1 . A method for routing a communication through a telecommunications network, the method comprising:
receiving a border gateway protocol (BGP) route to a customer network comprising a customer-specific next-hop value that includes one egress route to the customer network;
receiving a plurality of interior gateway protocol (IGP) routes, each of the plurality of IGP routes comprising one of a plurality of different egress routes through the telecommunications network to a network device and the customer-specific next-hop value;
selecting a route from the received plurality of IGP routes based on the received BGP route; and
transmitting a received communication along the selected route to the customer network.
2 . The method as recited in claim 1 wherein the BGP route for the customer network is received from a route reflector device of the telecommunications network.
3 . The method as recited in claim 2 wherein the route reflector receives a plurality of BGP routes for the customer network from a plurality of network edge devices, each of the plurality of network edge devices in communication with the customer network.
4 . The method as recited in claim 3 wherein each of the plurality of network edge devices transmits a unique one of the plurality of IGP routes to the telecommunications network.
5 . The method as recited in claim 1 wherein selecting the route from the plurality of IGP routes comprises selecting a logical shortest route through the telecommunications network.
6 . The method as recited in claim 1 wherein selecting the route from the plurality of IGP routes is further based on load balancing among the plurality of different egress routes.
7 . A telecommunications network device comprising:
a network communication port for communicating with devices of a telecommunications network;
a processing device; and
a non-transitory computer-readable storage medium with one or more executable instructions stored thereon, wherein the processing device executes the one or more instructions to perform the operations of:
receiving a border gateway protocol (BGP) route to a customer network comprising a customer-specific next-hop value that includes one egress route to the customer network;
receiving a plurality of interior gateway protocol (IGP) routes, each of the plurality of IGP routes comprising one of a plurality of different egress routes through the telecommunications network to a network device and the customer-specific next-hop value;
selecting a route from the received plurality of IGP routes based on the received BGP route; and
transmitting a received communication along the selected route to the customer network.
8 . The telecommunications network device as recited in claim 7 wherein the BGP route for the customer network is received through the network communication port from a route reflector device in communication with the telecommunication network device.
9 . The telecommunications network device as recited in claim 8 wherein the route reflector receives a plurality of BGP routes for the customer network from a plurality of network edge devices, each of the plurality of network edge devices in communication with the customer network.
10 . The telecommunications network device as recited in claim 9 wherein each of the plurality of network edge devices transmits a unique one of the plurality of IGP routes to the telecommunications network device through the network communication port.
11 . The telecommunications network device as recited in claim 7 wherein selecting the route from the plurality of IGP routes comprises selecting a logical shortest route through the telecommunications network.
12 . The telecommunications network device as recited in claim 7 wherein selecting the route from the plurality of IGP routes is further based on load balancing among the plurality of different egress routes.