Configuring Qos At The Olt Side - 3Com S7906E Configuration Manual

Table 12-2 Configure QoS at the ONU side of an EPON system
Configure QoS for uplink
traffic
Configure QoS for downlink
traffic

Configuring QoS at the OLT side

Modify the priority mapping on the OLT port
Follow these steps to modify the 802.1p-to-local mapping on the OLT port:
To do...
Enter system view
Enter OLT port view
Modify the 802.1p-to-local
mapping on the OLT port for
downlink or uplink traffic
Sending buffer size of the OLT port
For traffic to be sent out an OLT port, you can set the priority threshold to identify high-priority traffic and
low-priority traffic. You can set sending buffer to reserve buffer for high-priority queues and thus
decrease the dropping probability of high-priority packets and guarantee QoS for high-priority packet
transmission. The sending buffer does not apply to low-priority queues.
You need to set the buffer parameters for high-priority packets in OLT port view and then enable
high-priority packet buffering for the specified ONU in ONU port view. After the configurations, when the
OLT sends traffic to the specified ONU, high-priority packet buffering is enabled and so that high-priority
packets can be sent preferentially.
QoS at the ONU side
Configuring traffic classification and
CoS priority marking for incoming
packets on UNIs
Configure priority trust mode for the
ONU
Configuring traffic policing for uplink
traffic of a UNI
Configure congestion management
for the uplink port of an ONU
Configure the ONU to perform
priority mapping for downlink traffic
from the OLT according to the
CoS-to-local precedence mapping
table
Set the ONU port priority
Configuring traffic policing for
downlink traffic of a UNI
Use the command...
system-view
interface interface-type interface-number
priority-queue-mapping { downstream |
upstream } { value } &<1-8>
Priority mapping on the UNI
Configuring the Priority Trust
Mode on a Port
Configure traffic policing for
downlink/uplink traffic of a UNI
Configuring SP Queuing
Configuring WFQ Queuing
Priority mapping on the ONU
port
Configuring the Priority Trust
Mode on a Port
Configure traffic policing for
downlink/uplink traffic of a UNI
7
Reference
Remarks
—
—
Optional
For the default
mapping, see Table
13-2.