Patent ID: 9723096
Date: 2017-08-01
CPC Classifications: G06F,H04L,H04M,H04W

Claim:
1. A method of serving media, the method comprising: at a first media server deployed in a layer2 (L2) access network, receiving a request to serve a cacheable media content to a user equipment, the user equipment being coupled to a content delivery network through the layer2 access network; determining if the cacheable media content is stored in a cache of the first media server, wherein the first media server does not determine if the cacheable media content is cacheable content; serving the cacheable media content from the cache to the user equipment if the media content is stored in the cache of the first media server; determining if the cacheable media content is stored in a cache of any other media server in a hierarchical set of media servers if the media content is not stored in the cache of the first media server; and retrieving from the other media server and serving the cacheable media content to the user equipment if the cacheable media content is stored in the cache of any other media server under the control of the content delivery network, wherein the first media server is configured to interface with L2 nodes in the L2 access networks via an inter working function unit (IWF) and with L3 nodes in layer3 (L3) networks via a separately routable internet protocol (IP) address.