Supermicro SSE-G2252, User Manual

Page: 1113 / 1401

Chapter 37: Class of Service Commands
Priority Commands (Layer 3 and 4)
– 1126 –
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.
S
YNTAX
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
C
OMMAND
M
ODE
Global Configuration
show qos map trust-mode 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 37-3: Priority Commands (Layer 3 and 4)
Command Function Mode
Table 37-4: 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)