Administrator Guide

Creating a Layer 3 Class Map
A Layer 3 class map differentiates ingress packets based on the DSCP value, IP precedence, VLANs, or characteristics defined
in an IP ACL. You can also use VLAN IDs and VRF IDs to classify the traffic using layer 3 class-maps.
You can specify more than one DSCP and IP precedence value, but only one value must match to trigger a positive match for
the class map.
NOTE: IPv6 and IP-any class maps cannot match on ACLs or VLANs.
Use step 1 or step 2 to start creating a Layer 3 class map.
1. Create a match-any class map.
CONFIGURATION mode
class-map match-any class-map-name
2. Create a match-all class map.
CONFIGURATION mode
class-map match-all class-map-name
3. Specify your match criteria.
CLASS MAP mode
match {ip | ipv6 | ip-any}
After you create a class-map, you are placed in CLASS MAP mode.
Match-any class maps allow up to five ACLs. Match-all class-maps allow only one ACL.
4. Link the class-map to a queue.
POLICY MAP mode
service-queue
Dell(conf)#ip access-list standard acl1
Dell(config-std-nacl)#permit 20.0.0.0/8
Dell(config-std-nacl)#exit
Dell(conf)#ip access-list standard acl2
Dell(config-std-nacl)#permit 20.1.1.0/24 order 0
Dell(config-std-nacl)#exit
Dell(conf)#class-map match-all cmap1
Dell(conf-class-map)#match ip access-group acl1
Dell(conf-class-map)#exitDell(conf)#class-map match-all cmap2
Dell(conf-class-map)#match ip access-group acl2
Dell(conf-class-map)#exit
Dell(conf)#policy-map-input pmap
Dell(conf-policy-map-in)#service-queue 3 class-map cmap1
Dell(conf-policy-map-in)#service-queue 1 class-map cmap2
Dell(conf-policy-map-in)#exit
Dell(conf)#interface tegig 1/0
Dell(conf-if-te-1/0)#service-policy input pmap
Examples of Creating a Layer 3 IPv6 Class Map
The following example matches IPv6 traffic with a DSCP value of 40.
Dell(conf)# class-map match-all test
Dell(conf-class-map)# match ipv6 dscp 40
The following example matches IPv4 and IPv6 traffic with a precedence value of 3.
Dell(conf)# class-map match-any test1
Dell(conf-class-map)#match ip-any precedence 3
784
Quality of Service (QoS)