Niranjan M MFollow

Abstract

The techniques presented herein propose method to distribute the mDNS query processing to the edge of the wireless network, i.e., to the Access Points (APs). This method includes, installing mDNS policy of dynamic permitted services list on the APs. This will build the intelligence on APs and optimizes the mDNS traffic to a great extent. APs will learn the service providers based on this permitted list. Clients querying for mDNS service will be forwarded to the WLC if and only if queried service is part of dynamic permitted services list. It is important to note that all the queries other than the supported and learnt list are dropped at the edge of the wireless network itself. Also, this method specifies to keeps the learnt list of 'service providers' up-to-date and relevant at the edge of the wireless network. The mDNS service providers can be present on wireless side or wired side. Service providers present on wireless side are known clients which are joined to WLC. When these clients leave WLC, it will inform APs to clear the entry from the learnt service provider list. APs monitors traffic for service providers associated to it. If the number of packet drops are above certain threshold, then it will notify WLC and take corrective action which then updates the learnt service provider list. For service providers present on wired side, WLC monitors traffic. If the number of packet drops are above certain threshold, then it will update the learnt service providers list, and then updates the learnt service provider count to the APs., so that APs will drop the queries for this service if the provider count is zero. These steps will ensure to clear the stale entries from the list to optimize the handling of mDNS traffic.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Download

Share

COinS