Qos map cos-dscp, Table 99 – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual
Page 474
424
Brocade 6910 Ethernet Access Switch Configuration Guide
53-1002581-01
Priority Commands (Layer 3 and 4)
21
qos map cos-dscp
This command maps CoS/CFI values in incoming packets to per-hop behavior and drop precedence
values for priority processing. Use the no form to restore the default settings.
Syntax
qos map cos-dscp phb drop-precedence from cos0 cfi0...cos7 cfi7
no qos map cos-dscp cos0 cfi0...cos7 cfi7
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)
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)
D
EFAULT
S
ETTING
Command Mode
Interface Configuration (Port)
Command Usage
•
The default mapping of CoS to PHB values shown in
is based on the recommended
settings in IEEE 802.1p for mapping CoS values to output queues.
Shows internal per-hop behavior to hardware queue map
PE
Shows the QoS mapping mode
PE
The default settings used for mapping priority values to internal DSCP values and back to the hardware queues are
designed to optimize priority services for the majority of network applications. It should not be necessary to modify any of
the default settings unless a queuing problem occurs with a particular application.
TABLE 98
Priority Commands (Layer 3 and 4)
Command
Function
Mode
TABLE 99
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)