R4#sh run | b class
 class-map match-all ospf
  match access-group 101
 class-map match-all ping
  match access-group 100
 class-map match-all web
  match protocol http
!
!
 policy-map Prob21
  class ping
   set dscp af31
  class ospf
   set dscp af43
  class web
   set dscp af21
  class class-default
   set dscp af12
!
!
!
!
interface Loopback0
 ip address 100.1.1.1 255.255.255.0
!
interface FastEthernet0/0
 ip address dhcp
 service-policy output Prob21
 duplex auto
 speed auto

!
!
access-list 100 permit icmp any any echo
access-list 101 permit ospf any any
!