07-30-2012 01:50 PM - edited 03-16-2019 12:27 PM
I've got a digital phone system but it goes VoIP across our P2P T1's. I am having quality issues between our 2 sites only and have decided to setup QoS on the Cisco 1841 P2P routers. Since it is only 1 phone server on each side that does the voice traffic, I would like to do QoS by IP address, instead of by protocol. So if I understand correctly, I will need an access-list, a class-map and a policy-map and need to point the interface to the policy-map. I'm drafting a config but have hit a few mental bumps in the road so can anybody give me an example config based on best practices? Thanks!
07-30-2012 01:52 PM
Okay, so how about this?:
ip access-list extended voip-qos
remark Phone Server QoS
permit host 1.1.1.1
class-map match-all voip
match access-group name voip-qos
policy-map qos
class voip
priority percent 80
class class-default
fair queue
int fa0/0
bandwidth 1544
bandwidth receive 1544
service-policy output qos
How does this look? Anybody have anything to add/corrections? Do you recommend bandwidth or priority as the appropriate method?
07-31-2012 08:30 AM
Ended up using this, which seems to have resolved it...
ip access-list extended voip-qos
remark This is for Site A and should be reversed for site B
remark These are the IP addresses of the phone servers
permit ip host 1.1.1.1 host 2.2.2.2
class-map match-all voip
match access-group name voip-qos
policy-map qos
class voip
priority percent 75
class class-default
fair-queue
int ser0/0/0
service-policy output qos
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