QoS for Voice

[leandroklazen]

Hi,

I am trying to do QoS for Voice traffic.

I need some help with the config, this is what I have so far.

class-map match-all VOICE
match dscp ef
class-map match-all SIGNALING
match dscp cs3
!
policy-map WAN-EDGE
class VOICE
priority percent 1
class SIGNALING
priority percent 1
!

Will this be enought to mark the Voice traffic and prioritize it should the link run into congestion?

Thanks

[Daniele Giordano]

Hi,

your class map doesn't mark voip traffic but it uses the existing one.

If you want remark or override existing mark you can use the below config:

access-list 103 remark IPPHONE
access-list 103 permit ip host 10.25.100.85 any

! adjust acl on your needs

class-map match-all voip
match access-group 103

policy-map voip
class voip
priority percent 20
class class-default
fair-queue

and so apply the policy to the wan interface

interface FastEthernet0/0
service-policy output voip

Regards.