I have a handfull of Cat 3560 switches in wireclosets and I would like to
implement some basic QoS for limited VoIP (it's an add-on to an older PBX we
have, not a full blown implementation) and some video conferencing
equipment. Basically, I want to mark VoIP traffic to DSCP 46, video to DSCP
34, normal data traffic to DSCP 0 and "scavenger" traffic to DSCP 8. That
part is pretty straight foward. It's the queuing I'm not 100% on. Take a
look, all suggestions are welcome.
version 12.1
!
mls qos map policed-dscp 0 34 46 to 8
mls qos map cos-dscp 0 18 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 2 threshold 1 4
mls qos srr-queue output cos-map queue 3 threshold 1 0 6 7
mls qos srr-queue output cos-map queue 4 threshold 1 1
mls qos srr-queue output dscp-map queue 2 threshold 1 34
mls qos srr-queue output dscp-map queue 3 threshold 1 0
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos
!
class-map match-all VIDEO
match access-group name VIDEO
class-map match-all VOICE
match access-group name VOICE
!
!
policy-map VOICE-VIDEO-PC-SCAV
class VOICE
set ip dscp 46
police 128000 8000 exceed-action drop
class VIDEO
set ip dscp 34
police 5000000 8000 exceed-action policed-dscp-transmit
class class-default
set ip dscp 0
police 5000000 8000 exceed-action policed-dscp-transmit
!
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
no ip address
srr-queue bandwidth share 1 60 40 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mdix auto
spanning-tree portfast
!
...
!
interface FastEthernet0/24
no ip address
srr-queue bandwidth share 1 60 40 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mdix auto
spanning-tree portfast
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
srr-queue bandwidth share 1 60 40 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mls qos trust dscp
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
srr-queue bandwidth share 1 60 40 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mls qos trust dscp
!
ip access-list extended VIDEO
permit <video traffic>
ip access-list extended VOICE
permit <voice traffic>
!
