Dot1P To Queue Mapping Requirement - Dell S6100 Configuration Manual

Examples of Traffic Classifications
The following example shows incorrect traffic classifications.
Dell#show running-config policy-map-input
!
policy-map-input PolicyMapIn
service-queue 1 class-map ClassAF1 qos-policy QosPolicyIn-1
service-queue 2 class-map ClassAF2 qos-policy QosPolicyIn-2
Dell#show running-config class-map
!
class-map match-any ClassAF1
match ip access-group AF1-FB1 set-ip-dscp 10
match ip access-group AF1-FB2 set-ip-dscp 12
match ip dscp 10 set-ip-dscp 14
match ipv6 dscp 20 set-ip-dscp 14
!
class-map match-all ClassAF2
match ip access-group AF2
match ip dscp 18
Dell#show running-config ACL
!
ip access-list extended AF1-FB1
seq 5 permit ip host 23.64.0.2 any
seq 10 deny ip any any
!
ip access-list extended AF1-FB2
seq 5 permit ip host 23.64.0.3 any
seq 10 deny ip any any
!
ip access-list extended AF2
seq 5 permit ip host 23.64.0.5 any
seq 10 deny ip any any
Dell# show cam layer3-qos interface tengigabitethernet 2/4/1
Cam Port Dscp Proto Tcp
Index
-----------------------------------------------------------------------
20416 1 18 IP
20417 1 18 IP
20418 1 0 IP
20419 1 0 IP
20420 1 0 IP
20421 1 0 IP
20422 1 10 0
24511 1 0 0
In the previous example, the ClassAF1 does not classify traffic as intended. Traffic matching the first match criteria is classified to Queue 1,
but all other traffic is classified to Queue 0.
When you remove the explicit "deny any" rule from all three ACLs, the CAM reflects exactly the desired classification.

Dot1p to Queue Mapping Requirement

The dot1p to queue mapping on the system is global and this is used to configure the PRIO2COS table configuration. For DSCP based PFC
feature on untagged packets, this mapping must be the same as the default dot1p to queue mapping and should not be changed (as in
TABLE 1). If a custom dot1p to queue mapping is present it should be reconfigured to the default dot1p to queue mapping.
• Currently Dell Networking OS supports matching only the following TCP flags:
• ACK
• FIN
• SYN
Src Dst SrcIp
Flag Port Port
0x0 0 0 23.64.0.5/32 0.0.0.0/0 20
0x0 0 0 0.0.0.0/0
0x0 0 0 23.64.0.2/32 0.0.0.0/0 10
0x0 0 0 0.0.0.0/0
0x0 0 0 23.64.0.3/32 0.0.0.0/0 12
0x0 0 0 0.0.0.0/0
0x0 0 0 0.0.0.0/0
0x0 0 0 0.0.0.0/0
DstIp DSCP Queue
Marking
2
0.0.0.0/0 - 0
1
0.0.0.0/0 - 0
1
0.0.0.0/0 - 0
0.0.0.0/0 14 1
0.0.0.0/0 - 0
Quality of Service (QoS) 703