C
HAPTER
10
| Class of Service
Layer 3/4 Priority Settings
– 250 –
PARAMETERS
These parameters are displayed:
◆ CoS – CoS value in ingress packets. (Range: 0-7)
◆ CFI – Canonical Format Indicator. Set to this parameter to “0” to
indicate that the MAC address information carried in the frame is in
canonical format. (Range: 0-1)
◆ PHB – Per-hop behavior, or the priority used for this router hop.
(Range: 0-7)
◆ Drop Precedence – Drop precedence used for Random Early Detection
in controlling traffic congestion. (Range: 0 - Green, 3 - Yellow, 1 - Red)
WEB INTERFACE
To map CoS/CFI values to internal PHB/drop precedence:
1. Click Traffic, Priority, CoS to DSCP.
2. Select Add from the Action list.
3. Set the PHB and drop precedence for any of the CoS/CFI combinations.
4. Click Apply.
Figure 122: Configuring CoS to DSCP Internal Mapping
Table 18: Default Mapping of CoS/CFI to Internal PHB/Drop Precedence
CFI
CoS
0 1
0(0,0)(0,0)
1(1,0)(1,0)
2(2,0)(2,0)
3(3,0)(3,0)
4(4,0)(4,0)
5(5,0)(5,0)
6(6,0)(6,0)
7(7,0)(7,0)
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