Deterministic session load-balancing and redundancy of access servers in a computer network

摘要

In one embodiment, for each port of an access node in an access-based computer network, one access server of a plurality of access servers is configured as a preferred access server for that port. Upon receiving a session initiation message at a particular port, the access node forwards the session initiation message to one or more of the access servers based on the configured preferred access server for the particular port.

主权项

1. A method, comprising:
receiving, by an access node including mechanical components and electrical circuitry for communicating over physical links, a session initiation message to initiate a session from a client device at a particular network interface on a client device side, the particular network interface being one of a plurality of network interfaces each configured to prefer a respective preferred access server of a plurality of access servers in an access-based computer network; and forwarding, by the access node, the session initiation message to one or more of the plurality of access servers, the session initiation message referencing a preferred access server for the particular network interface, wherein the access servers other than the preferred access server respond to the session initiation message with a delay and the preferred access server for the particular network interface responds without a delay, and wherein the client device selects a first access server to respond to the session initiation message for initiating the session.