02-20-2012 05:57 PM - edited 03-04-2019 03:21 PM
Hi,
I am looking at upgrading our 4503 to the 4507R+E. Just going through the configurations and a couple of commands seemed to have dropped off this release.
1. I can no longer specify encapsulation type on a trunk. Does the 4507 auto sence encapsulation and apply it dynamically?
2. I had dscp trust configuration as below on the 4503, whats the equivilent on the 4507?
qos trust dscp
auto qos voip trust
tx-queue 3
priority high
shape percent 33
Thanks
Brendan
Solved! Go to Solution.
02-20-2012 07:44 PM
Hello Brendan,
1) yes, it would autosense. To see that, you can issue show interface
2) What is the SUP engine you are on? If it's a SUP 6E, then the command is not supported. Below is the link
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps4324/white_paper_c11-539588.pdf
Thanks
Vivek
02-20-2012 07:44 PM
Hello Brendan,
1) yes, it would autosense. To see that, you can issue show interface
2) What is the SUP engine you are on? If it's a SUP 6E, then the command is not supported. Below is the link
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps4324/white_paper_c11-539588.pdf
Thanks
Vivek
02-20-2012 07:48 PM
Thanks Vivek, SUP 7, I take it from your comment the 7 will not supprt the command either. There was concern the switch would overwrite the IP phones dscp tags, will have to run up some traffic captures to see if this is the case on the new gear.
Thanks
Brendan
02-20-2012 07:57 PM
Yes, you are right. Same case with Sup7 as well. By default everything is trusted. Switch wouldn't overwrite the DSCP value learnt from IP Phone, it would simply trust it. You can check that up with a capture though.
Thanks
Vivek
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