Classify Traffic; Create A Layer 3 Class Map - Dell Force10 MXL Blade Configuration Manual

Classify Traffic

Class maps differentiate traffic so that you can apply separate quality of service policies to each class. For
both class maps, Layer 2 and Layer 3, FTOS matches packets against match criteria in the order that you
configure them.

Create a Layer 3 Class Map

A Layer 3 class map differentiates ingress packets based on the DSCP value or IP precedence, and
characteristics defined in an IP access control list (ACL). You may specify more than one DSCP and IP
precedence value, but only one value must match to trigger a positive match for the class map.
1. To create a match-any class map, use the
map, use the
class-map match-all
2. After you create a class-map, FTOS places you in CLASS MAP mode. From this mode, specify your
match criteria using the
ACLs. Match-all class-maps allow only one ACL.
3. After you specify your match criteria, link the class-map to a queue using the
from POLICY MAP mode
Figure 24-7. Using the Order Keyword in ACLs
FTOS(conf)#ip access-list standard acl1
FTOS(conf-std-nacl)#permit 20.0.0.0/8
FTOS(conf-std-nacl)#exit
FTOS(conf)#ip access-list standard acl2
FTOS(conf-std-nacl)#permit 20.1.1.0/24 order 0
FTOS(conf-std-nacl)#exit
FTOS(conf)#class-map match-all cmap1
FTOS(conf-class-map)#match ip access-group acl1
FTOS(conf-class-map)#exit
FTOS(conf)#class-map match-all cmap2
FTOS(conf-class-map)#match ip access-group acl2
FTOS(conf-class-map)#exit
FTOS(conf)#policy-map-input pmap
FTOS(conf-policy-map-in)#service-queue 4 class-map cmap1
FTOS(conf-policy-map-in)#service-queue 1 class-map cmap2
FTOS(conf-policy-map-in)#exit
FTOS(conf)#interface tengig 1/0
FTOS(conf-if-te-1/0)#service-policy input pmap
class-map match-any
command from CONFIGURATION mode
command (Figure
match ip
(Figure 24-7).
command or to create a match-all class
24-7). Match-any class maps allow up to five
(Figure 24-7).
command
service-queue
Quality of Service (QoS) | 421