ZyXEL Communications OMC-2301, User Manual

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Chapter 6 Basic Setting
OMC-2301 User’s Guide
71
Upstream DBA
Priority Class Select a traffic priority level for a logical link.
The higher the priority (larger number), the more likely that the ONU gets the
unused upstream bandwidth (up to the maximum bandwidth setting) after the
minimum bandwidth requirement is met.
Delay Specify the delay tolerance of a logical link for bandwidth allocation when
network congestion occurs.
Select
Low Delay for the packets to get serviced faster. This is recommended
when you have real-time applications (such as VoIP) on the network.
Select
High Delay to get less service time slots. Packets are serviced slower.
Minimum Upstream
Bandwidth
Specify the minimum upstream bandwidth guaranteed to the ONU. Upstream
traffic refers to traffic from the ONU to the OLT.
The number you entered is multiplied by 64.
Maximum Upstream
Bandwidth
Specify the maximum upstream bandwidth guaranteed to the ONU. Upstream
traffic refers to traffic from the ONU to the OLT.
The number you entered is multiplied by 64.
Upstream Policing per Queue
Active Select Active to apply the bandwidth limit to the upstream traffic on the queues
then configure the settings in the field below. Upstream traffic refers to traffic
from the ONU to the OLT.
Maximum Queue 0
Bandwidth
Specify the maximum upstream bandwidth for packets in queue 0.
The number you entered is multiplied by 100.
Maximum Queue 1
Bandwidth
Specify the maximum upstream bandwidth for packets in queue 1.
The number you entered is multiplied by 100.
Maximum Queue 2
Bandwidth
Specify the maximum upstream bandwidth for packets in queue 2.
The number you entered is multiplied by 100.
Maximum Queue 3
Bandwidth
Specify the maximum upstream bandwidth for packets in queue 3.
The number you entered is multiplied by 100.
Upstream Priority Queue Size (1-Port ONU only)
Active Select Active to set the queue size for the upstream traffic.
Queue 0 Size Specify the size (in byte) for queue 0.
The number you entered is multiplied by 128.
Queue 1 Size Specify the size (in byte) for queue 1.
The number you entered is multiplied by 128.
Queue 2 Size Specify the size (in byte) for queue 2.
The number you entered is multiplied by 128.
Queue 3 Size Specify the size (in byte) for queue 3.
The number you entered is multiplied by 128.
Downstream Policing
Note: Downstream Policing applies the bandwidth limit to the downstream traffic
equally and drops all packets when the maximum bandwidth is reached even
though the packets have different priorities. If the downstream traffic flows are
assigned different priorities, use
Downstream Policing per Queue to make
sure packets with a higher priority can be processed first.
Active Select Active to control the downstream traffic (from the OLT to the ONU).
Table 17 EPON Profile (continued)
LABEL DESCRIPTION