I’m trying to set up a QoS template that I can implement and edit/update at other sites with similar requirements. I’m doing this on a 4500-X VSS Switches. I can set class-maps and Policy-maps, but can either do Priority or bandwidth inside the Policy->Class. Meaning I can’t set a Policy-Map -> class
We have multiple VoIP providers ( all soft phones ) and I’d really like to set DSCP EF for Priority and a percent of the bandwidth. I was pointed to this site: https://www.ciscopress.com/articles/article.asp?p=2756478&seqNum=8 and it describes a 4, 8. 12 config I still have couple questions…
For example the 8-class QoS strategy…
Voice: Marked with EF and limited to 10 percent of link bandwidth in a strict-priority queue
– Is this telling me that traffic marked as EF will get Priority 10% and only 10% of link bandwidth
Multimedia conferencing (Interactive video): Marked with AF41 or sometimes as EF and limited to 23 percent of link bandwidth in a strict-priority queue
– Is this telling me that traffic marked as AF41 will get 23% and only 23% of link bandwidth
Are the bandwidths set in a template in the IOS, and are there more auto bandwidth settings? For example traffic marked as AF32. Is there a pre-built min / max for that marking?
Does the priority setting within the class of the Policy just set that class as priority -> first out? For example my class for EF traffic I set priority for that class in the Policy Map 10% of the first out data…
If I set priority and "remaining Bandwidth percent <> I’m assuming the delivery of the packet is based on the marking… So a AF41 is going to go before a AF11 ( AF43 for that matter ) and does the AF41 queue have to be empty before the AF11 will hit the line?
Policy Map primary-eth-1G Class qos-any-ef priority Class qos-control bandwidth remaining 5 (%) Class qos-sip-signaling bandwidth remaining 3 (%)
If I have traffic entering the switch marked as EF can I change that to something else like CS4 or AF41 via: ACL -> class-map -> Policy-map config. Before it hits the EF class-map? We have Zoom running and currently the app is tagging traffic as EF. I’d like to have my Voice take precedence over Zoom all the time…