Explain the QoS in EPON.

1.	Explain the QoS in EPON.
Answer» Many PON applications require high QoS (e.g. IPTV). EPON leaves QoS to higher layers − VLAN tags P bits or DiffServ DSCP In addition, there is a crucial difference between LLID and Port-ID − There is always 1 LLID per ONU There is 1 Port-ID per input port - there may be many per ONU This makes port-based QoS simple to implement at PON layer

Answer»

Many PON applications require high QoS (e.g. IPTV).

EPON leaves QoS to higher layers −

In addition, there is a crucial difference between LLID and Port-ID −

Discussion