Method and system for assigning vulnerability levels to sessions

A network configured to indicate vulnerability of existing streaming sessions to new streaming sessions, comprising:

• a latency variation calculator, a vulnerability calculator, and an admission controller;
• the vulnerability calculator is configured to determine, for a first existing streaming session, a threshold, based on a limit associated with an allowable end-to-end latency variation of the first existing session;
• wherein the first existing streaming session is established over a first existing path passing through a first output port of a first switch;
• the latency variation calculator is configured to estimate an estimated end-to-end latency variation of a first existing streaming session;
• the vulnerability calculator is configured to:
• determine, by comparing the estimated end-to-end latency variation with the threshold, a determination that the estimated end-to-end latency variation is higher than the threshold, and set a first vulnerability indicator of the first streaming session at the first output port to a first level based on the determination;
• the vulnerability calculator is further configured to set a second vulnerability indicator of a second existing streaming session at a second output port to a second level, based on first level of the first vulnerability indicator;
• wherein the second existing streaming session is established over a second existing path passing through a second output port of a second switch before passing through the first output port;
• the admission controller is configured to receive first and second requests to establish first and second new streaming over first and second new paths passing through the first and second output ports, respectively;
• and
• the admission controller is further configured to reject the first and second requests, based on the first and second levels of the first and second vulnerability indicators, respectively.