Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations Mike Lewis on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

3750 to 3850 QoS commands

Status
Not open for further replies.

atascoman

Technical User
Oct 10, 2003
868
US
Hello,

Is there a config guide or other source someone can recommend for this. I have a lot of 3750 switches that are being refreshed with 3850 and I want to make sure the QoS settings are carried over properly. Been awhile since I worked with Cisco so my knowledge is a little rusty. Here is an example of the config from an interface on the 3750

interface range GigabitEthernet1/0/23 - 24
description VLAN 222 Device
switchport access vlan 80
switchport mode access
switchport voice vlan 60
srr-queue bandwidth share 1 70 25 5
priority-queue out
mls qos trust dscp
spanning-tree portfast
 
The differences in the QoS configurations between the two platforms is fairly big. The 3650/3850 is more or less like configuring a fully fledged router - requiring ingress and egress service policies. I have done some work with this for several customers as well as comparing the generated AutoQoS configurations between the two and then customising the output.
There is a guide on CCO here - that should help you out. As you are simply enabling the egress strict priority queue (priority-quie out) and trusting the incoming DSCP values (mls qos trust dscp) it shouldn't be too difficult.

Andy
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top