PLANET EPL-1000 - Manual (Page 39)

4.2.7 Service Level Agreement
Every element scheduled by the OLT has an associated SLA record which can be
configured by the GUI or other host systems.
Every Logical Link registered by the TK3721 has an associated SLA maintained by the
TK3721, and stored internally in its NVS database (if enabled to do so). In the upstream
direction, the TK3721 uses a reporting mechanism specified by 802.3ah to monitor the
status of each registered link. When a particular Link’s FIFO(s) has data to send this
information will be conveyed to the OLT in the form of a report message. The OLT will use
this information and the SLA associated with the link to schedule a time slot in which the
link may transmit its data. Because the OLT schedules the links, rather than relying on
mechanisms in the ONU, service contracts are enforced in the central office, and excess
bandwidth may be allocated efficiently. SLA enforcement is accurate to within 2% of the
provisioned value.
„ Enable SLA
If checked, the OLT will allow the element to transmit user data.
„ Max Bw
Configures the maximum sustained rate at which a link may transmit data.
„ Min Bw
Configures the sustained rate at which the user may transmit without loss of data, this value
should always be less than or equal to Max Bw.
„ Mode
Determines the scheduler level
From the perspective of the GUI or other external devise managing the TK3721 “Delete”
semantically
- 39 -