That is Half II of a three-blog collection on options to beat challenges related to bridging the digital divide.
Within the earlier weblog (see Bridging the Digital Divide with Subscriber Edge), we mentioned the standard broadband community design. On this weblog, we’ll give attention to a brand new structure for broadband networks, and the challenges that they deal with.
Shifting to a distributed structure
The power to allow subscriber features on completely different layers or units within the community gives a chance to optimally place subscriber edge within the community to assist match economical and user-experience wants. For instance, on condition that video quantities to greater than 75% of the quantity of whole subscriber site visitors, versatile termination permits for the environment friendly offload of video site visitors nearer to the subscriber by way of cautious placement of content material caches and the addition of peering factors. Distributed termination of subscribers improves the general consumer expertise because the site visitors follows a extra superb path that optimizes capability utilization and helps decrease latency for demanding functions.
With this distributed structure, communication service suppliers (CSPs) can save prices by lowering unneeded bandwidth upgrades of the whole community by way of site visitors offload additional downstream. Nevertheless, with extra distributed placement of subscriber edge features utilizing completely different termination fashions, CSPs could face challenges with scaling, managing, and working subscriber providers networks.
To unravel these challenges, Broadband Discussion board outlined the Management and Consumer Airplane Separation (CUPS) mannequin for the Broadband Community Gateway (BNG) in TR-459 (see Determine 1). CUPS allows distribution of consumer/information planes nearer to the subscriber, permitting the management aircraft perform to be centralized. This can be a vital change from the standard BNG structure—the place management aircraft and consumer aircraft features are tightly built-in and carried out by the identical system. This new distributed architectural method takes benefit of CUPS to supply newer broadband providers and use instances which might be completely different from conventional choices.
Centralizing the management aircraft perform helps decrease operational prices in a distributed subscriber edge perform that may be non-uniform with various necessities on scalability, kind issue, and function.
CUPS additionally allows new income streams or fashions, which weren’t attainable with the standard structure, corresponding to differentiated service plans. For instance, service suppliers can supply a day/evening plan, the place subscribers are provisioned or moved to a smaller set of consumer planes through the evening for value financial savings and potential sustainability advantages.
Clients also can supply tiered plans with Platinum, Gold, and Greatest-Effort, primarily based on redundancy capabilities to assist shield premium subscribers from consumer aircraft, entry, or web site failures. With the management aircraft not tightly built-in with the consumer aircraft, and full visibility of all consumer planes, CUPS allows greater flexibility for CSPs to seamlessly transfer subscribers to completely different nodes with out disruption.
The newest growth by the Broadband Discussion board is Problem 2 of TR-459 Multi-Service Disaggregated BNG with CUPS specification (see Figure2), which allows improved resiliency, scalability, and sooner deployment occasions to assist present a greater end-user expertise with a extra dependable and constant service.
Within the third weblog, we’ll share particulars on the Cisco Subscriber Edge resolution, together with the structure, technical benefits, and buyer advantages.
Get began immediately reimagining your gateway structure with
Share:
