Enabling multicast per-session accounting

You can use the following command to configure multicast per-session accounting:

config system npu

set mcast-session-accounting {tpe-based | session-based | disable}

end

tpe-based (the default) enables TPE-based multicast session accounting. TPE is the NP7 accounting and traffic shaping module. In most cases, if you want multicast session accounting, you should select tpe-based for optimal performance and reliability. This setting may be incompatible with some traffic. If problems such as packet order issues occur, you can disable multicast session accounting or select session-based multicast accounting.

session-based enables session-based multicast session accounting.

disable disables multicast session accounting.

Generally speaking, session-based accounting has better performance than TPE-based when there are high number of multicast sessions (on the order of 7,000 sessions, depending on network and other conditions).

TPE-based accounting, generally can have better performance when there are a fewer multicast sessions with very high throughput.

Per-session accounting can affect offloading performance. So you should only enable per-session accounting if you need the accounting information.

Enabling per-session accounting does not provide traffic flow data for sFlow or NetFlow.