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Vonage Good stuff. That's a pretty standard config, but let me share a slightly different
Good stuff. That's a pretty standard config, but let me share a slightly different implementation that I've been using.
Instead of using 'match ip rtp', a bit better alternative is to use the nBAR style command 'match protocol rtp audio'. The older style 'match ip rtp' will priority queue any even numbered udp port from 10000 to 20000 (in this case), which could be anything. Voice traffic is on the even ports, control packets on the odds. The command 'match protocol rtp audio' does a match on the protocol itself, not just ports. To use nBAR, a prerequisite is CEF, so your router platform will need to support that as well. Additionally, adding call signalling to the strict queue is best practice. I used an acl for SIP protocol recognition. I gave rtp 90 Kbps and SIP 15Kbps.
If you notice I also set the dscp bits for my strict queues as well, but you really don't need to bother with that, your upstream provider won't do anything with them.
ip cef
ip access-list extended sip
permit udp any any eq 5061
class-map match-any call-signalling
match access-group name sip
class-map match-any voice
match protocol rtp audio
!
!
policy-map voice
class voice
set dscp ef
priority 90
class call-signalling
set dscp cs3
priority 15
class class-default
fair-queue
policy-map traffic-shape
class class-default
shape average 384000 38400 0
service-policy voice
interface FastEthernet0
bandwidth 384
service-policy output traffic-shape
Read The Full Thread: Cisco VOIP QoS for Vonage
• Hi everyone,
I'm posting this in hopes that it will help others configure
• How do you tell whether or not the QoS is actually working? Simply enter the command
• Just to let you know this post was a huge help to me.
Thank you very much for taking
• To Celeron (or EzCo),
Just curios, I am getting ready to take my ccna so all
• Doesn't matter what is behind the Cisco, it's just going to (outbound) priority
• So there's no way to do this without trying to match your upload speed? Is there
• No, you really have to make sure you enable shaping because the key point of QoS
• They are stacked and connected with two DTE/DCE cables right now. I put your example
• Class-map: class-default (match-any)
905660 packets, 369453629 bytes
EzCo posted "Good stuff. That's a pretty standard config, but let me share a slightly different" on 03/04/2006 |
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