04-24-2007 01:19 AM - edited 03-03-2019 04:41 PM
Hello,
We have 2 x C3662 running 12.2.40 and 2 x C3845 running 12.3.11T8. What options do I have for monitoring and or configuring QOS on these devices. I have created some class-maps & a policy-map but not sure if these are correct or even working !!.
Regards
Scott
04-24-2007 01:29 AM
Hi,
could you post here your goals and confs?
Thanks
Andrea
04-24-2007 01:41 AM
Hi,
We have two offices seperated by to 10Mb LES links we run a pure VOIP environment and need to ensure that voice traffic is kept optimised across these links.
class-map match-any L3L2-VoiceRTP
match ip precedence 1
match access-group name VoiceRTP
class-map match-any L3L2-VoiceControl
match ip precedence 2
match access-group name VoiceControl
!
!
policy-map QoS-POLICY-10MB
class L3L2-VoiceRTP
priority 1888
class L3L2-VoiceControl
priority 768
policy-map Shape-POLICY
class class-default
shape average 10240000 2560000
service-policy QoS-POLICY-10MB
interface FastEthernet0/1
ip address xxx.xxx.xxx.xxx 255.255.255.252
ip nbar protocol-discovery
service-policy output Shape-POLICY
ip route-cache flow
speed 100
full-duplex
04-24-2007 05:02 AM
VoiP packets are genrally marked as IP prcedence 5 or DSCP EF
Control traffic is marked as CS3
Please have the class-maps configured as follows
class-map match-any L3L2-VoiceRTP
match ip precedence 5 or match ip dscp EF
match access-group name VoiceRTP
class-map match-any L3L2-VoiceControl
match ip precedence 3 or match ip dscp cs3
match access-group name VoiceControl
ip access-list extended VoiceRTP
permit udp any any eq 16384 32767
you can also use match ip rtp 16384 16383
I have also found you using NBAR which drives to define the classmaps using the match protocol command
"match protocol rtp "
This is CPU intensive and hence better to be cautious before configuring it
HTH, rate if it does
Narayan
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