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

To do...
Enter system view
Enter ONU port view
Enable the ONU downlink
bandwidth allocation
policy and prioritize
high-priority packets
Configure the ONU
downlink bandwidth limit
The configuration of high-priority packet buffering (as shown in
and that of the downlink bandwidth limit take effect only when the downlink bandwidth allocation
policy is enabled.
The configured downlink bandwidth limitation takes effect only on known unicasts, but not on
unknown unicasts, multicasts, or broadcasts.
The sum of the minimum uplink bandwidths configured for all the existing ONU ports under an OLT
port cannot exceed 921600 Kbps, namely, 900 Mbps.

Configuring QoS at the ONU Side

Priority mapping on the ONU port
When the ONU receives packets on an ONU port, it assigns local precedence to the packets according
to the 802.1p-to-local precedence mapping table.
precedence mapping table.
Table 12-3 Default mapping between CoS precedence values and local precedence values
CoS precedence
0
1
2
3
4
5
6
7
Use the command...
system-view
interface interface-type
interface-number
bandwidth downstream policy
enable
bandwidth downstream
{ max-bandwidth value |
max-burstsize value } *
0
0
1
1
2
2
3
3
9
—
—
Required
By default, the downlink
bandwidth allocation policy is
disabled and high-priority
packets are not prioritized.
Optional
By default, the maximum
bandwidth is 999994 kbps, and
the maximum burst buffer is
8388480 bytes.
Sending buffer size of the OLT
Table 12-3 shows the default 802.1p-to-local
Local precedence
Remarks
port)