I'd like to submit this config for review. My goal is to have outbound latency sensetive traffic(acl 101) and outbound lantency in-sensetive traffic(acl 102) get marked w/ dscp values on the internal interface, fa0.
Once this traffic is marked have the outbound interface give preference to the AF11 class(w/ priotity queueing), and AF13 getting dropped sooner and sent later.
#acl for latency sensetive traffic
access-list 101 permit udp any any range 26000 29000
access-list 101 permit udp any any range 5998 9000
access-list 101 permit udp any any range 2300 2400
access-list 101 permit udp any any eq 4000
access-list 101 permit udp any any eq 14567
#acl for latency insensetive traffic
access-list 102 permit tcp any any eq 8080
access-list 102 permit tcp any any eq 443
access-list 102 permit tcp any any eq ftp-data
access-list 102 permit tcp any any eq ftp
access-list 102 permit tcp any any eq www
#class maps to classify inbound traffic on the #internal interface
class-map match-any sensetive
match access-group 101
class-map match-any insensetive
match access-group 102
#class maps to match packets w/ diffserv values
#on WAN interface s0
class-map match-all high
match ip dscp af11
class-map match-all low
match ip dscp af13
#set acl 101 w/ dscp values of Af11 & acl 102 w/ Af13
policy-map setdscp
class sensetive
set dscp af11
class insensetive
set dscp af13
#give acl 101 w/ dscp value af11 70% of out going #bandwidth and acl 102 w/ dscp value af13 the #remaining 30%
policy-map manage
class high
priority percent 70
class low
bandwidth remaining percent 30
inter fa0
desc internal interface
service-policy input setdscp
inter serial0
desc WAN interface
service-policy output manage
Can anyone spot anything wrong with this? I'm worried about QoS. DSCP should give prefence to acl 101 but I'm not sure as this is my first foray into dscp.
Should I just dump DSCP and opt for GTS?
Also once packets marked w/ DSCP leave my network - do routers further downstream reset those bits to 0? If thats the case Dscps value goes down signifigantly.
Thanks for any feedback, I've found QoS to be very foggy...
