06-11-2019 12:45 AM
Which application does NBAR2 classify Skype for Business Application/Desktop Sharing as?
Microsoft recommend to classify this traffic as CS3 (DSCP 24) and I want to verify how I can maintain this if classifying using NBAR2.
Thanks
06-11-2019 01:14 AM
Hello Pinglis,
NBAR2 is a classification engine and does not provide automatic marking
You need to configure a class-map like
class-map SKYPE
match protocol skype
Later in the policy-map that performs marking
policy-map MARK-TRAFFIC
class SKYPE
set dscp cs3
Note: it is very important the order of invoking the classes in the policy for correct behaviour.
on input interface you will have
interface gi0/0
service-policy MARK-TRAFFIC input
Hope to help
Giuseppe
06-12-2019 02:18 AM
Thanks for the reply. I understand I need a Class Maps to classify and mark the traffic. I am looking at classifying traffic based on traffic-class and business-relevance, e.g:
class-map match-all MULTIMEDIA-CONFERENCING
match protocol attribute traffic-class multimedia-conferencing
match protocol attribute business-relevance business-relevant
What I need to know is how NBAR is classifying Skype for Business Application/Desktop Sharing. For Audio and Video is is clear (ms-lync-audio and ms-lync-video) but not for Application/Desktop Sharing.
The descriptions in the protocol pack release notes are just an unhelpful one line Microsoft sales pitch
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