Dell S3048-ON, Руководство по настройке

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• Specify the order in which you want to apply ACL rules using the keyword
order
.
order
The order can range from 0 to 254.
By default, all ACL rules have an order of 255 .
Displaying Configured Class Maps and Match Criteria
To display all class-maps or a specific class map, use the following command.
Dell Networking OS Behavior : An explicit “deny any" rule in a Layer 3 ACL used in a (match any or match all) class-map creates a "default
to Queue 0" entry in the CAM, which causes unintended traffic classification. In the following example, traffic is classified in two Queues, 1
and 2. Class-map ClassAF1 is “match any,” and ClassAF2 is “match all”.
• Display all class-maps or a specific class map.
EXEC Privilege mode
show qos class-map
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
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 as a result of CAM entry 20419.
When you remove the explicit “deny any” rule from all three ACLs, the CAM reflects exactly the desired classification.
The following example shows correct traffic classifications.
Dell#show cam layer3-qos interface gigabitethernet 2/4
Cam Port Dscp Proto Tcp Src Dst SrcIp DstIp DSCP Queue
Quality of Service (QoS) 643