Mapping Cos Values To Egress Queues; Table 3-12 Mapping Cos Values To Egress Queues; Table 3-13 Cos Priority Levels - Digisol DG-FS4526 Management Manual

3
Configuring the Switch
CLI – This example assigns a default priority of 5 to port 3.
Console(config)#interface ethernet 1/3
Console(config-if)#switchport priority default 5
Console(config-if)#end
Console#show interfaces switchport ethernet 1/3
Information of Eth 1/3
Broadcast Threshold:
LACP Status:
Ingress Rate Limit:
Egress Rate Limit:
VLAN Membership Mode:
Ingress Rule:
Acceptable Frame Type:
Native VLAN:
Priority for Untagged Traffic: 5
GVRP Status:
Allowed VLAN:
Forbidden VLAN:
Private-VLAN Mode:
Private-VLAN host-association: NONE
Private-VLAN Mapping:
802.1Q-tunnel Status:
802.1Q-tunnel Mode:
802.1Q-tunnel TPID:
Console#

Mapping CoS Values to Egress Queues

This switch processes Class of Service (CoS) priority tagged traffic by using four
priority queues for each port, with service schedules based on Strict, Weighted
Round Robin (WRR), or Hybrid. Up to eight separate traffic priorities are defined in
IEEE 802.1p. The default priority levels are assigned according to recommendations
in the IEEE 802.1p standard as shown in the following table.
Queue
Priority
The priority levels recommended in the IEEE 802.1p standard for various network
applications are shown in the following table. However, you can map the priority
levels to the switch's output queues in any way that benefits application traffic for
your own network.
Priority Level
1
2
0 (default)
3
4
5
3-182
Enabled, scale:1000K level:5 octets/second
Disabled
Disabled, scale:10M level:1
Disabled, scale:10M level:1
Hybrid
Enabled
All frames
1
Disabled
1(u),4093(t),
NONE
NONE
Disable
NORMAL
8100(Hex)

Table 3-12 Mapping CoS Values to Egress Queues

0
1,2

Table 3-13 CoS Priority Levels

Traffic Type
Background
(Spare)
Best Effort
Excellent Effort
Controlled Load
Video, less than 100 milliseconds latency and jitter
www.digisol.com
1 2
0,3 4,5
4-150
4-248
4-159
3
6,7