09-15-2006 09:58 AM - edited 03-03-2019 02:00 PM
I'm configuring QoS to priortize our voice traffic. This is the first time I've set up QoS so I'm a little confused.
I have identified my VoIP traffic class and am tagging the packets coming into the Ethernet port with DSCP ef. My question is: Will the tagged packets be automatically priortized or do I also have to add something like this:
access-list 100 permit ip any any dscp ef
class-map VoIP
match access-group 100
policy-map QoS-VoIP
class VoIP
priority 128
class class-default
fair-queue
interface s0
service-policy output QoS-VoIP
09-15-2006 11:42 AM
You do need to configure the QoS on the router as well. If you don't, the router will use it's queuing mechanism to forward the traffic and this is likely not giving the desired priority to your voice traffic.
What you propose looks more or less ok to start with.
Regards,
Leo
09-15-2006 11:45 AM
Yes you must apply a outbound service policy to get the QoS to work properly. Although the serial line runs fair-queue by default that is not good enough to run voice.
You can use MATCH DSCP rathen than a access list if you want to.
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