Configuration Guide User guide

FastIron Configuration Guide 1969
53-1002494-02
QoS overview
Once a packet is classified, it is mapped to a forwarding queue. For all products except the
SX-F148GPP interface module and ICX 6430 switch, there are eight queues designated from 0
through 7. The internal forwarding priority maps to one of these eight queues. For the SX-Fl48GPP
interface module and ICX 6430 switch, internal forwarding priority maps to four forwarding queues.
The mapping between the internal priority and the forwarding queue cannot be changed.
Table 329 through Table 332 show the default QoS mappings for FCX platforms that are used if the
trust level for CoS or DSCP is enabled. For information on the SX-Fl48GPP interface module, refer to
“Queues for the SX-FI48GPP interface module” on page 1972. For information on default QoS
mappings for the ICX 6430 switch, refer to “Queues for the ICX 6430 switch” on page 1973.
TABLE 329 Default QoS mappings for FCX platforms, columns 0 to 15
DSCP value 0123456789101112121415
802.1p (CoS)
value
0000000011111111
DSCP value0123456789101112121415
Internal
forwarding
priority
0000000011111111
Forwarding
queue
0000000011111111
TABLE 330 Default QoS mappings for FCX platforms, columns 16 to 31
DSCP value 16171819202122232425262728293031
802.1p (CoS)
value
2222222233333333
DSCP value 16171819202122232425262728293031
Internal
forwarding
priority
2222222233333333
Forwarding
queue
2222222233333333
TABLE 331 Default QoS mappings for FCX platforms, columns 32 to 47
DSCP value 32333435363738394041424344454647
802.1p (CoS)
value
4444444455555555
DSCP value 32333435363738394041424344454647
Internal
forwarding
priority
4444444455555555
Forwarding
queue
4444444455555555