sirroutesalot
Technical User
Relative to a Cisco 3750 access switch using vlan based QoS on the switchport, can some describe how the switch maps the VLAN to a specific priority level. Example config:
interface GigabitEthernet1/0/1
switchport access vlan 25
switchport mode access
switchport voice vlan 28
mls qos vlan-based
spanning-tree portfast
There must be a mapping required somewhere to associate vlan 28 with priority treatment and vlan 25 with default treatment. I'm just not sure how that mapping is created. Any input?
There are no access lists (other than basic security), policy maps, or class maps on the switch. My assertion to this customer is that he has an incomplete QoS configuration and has failed to properly establish a trust boundary at this port. I'm trying to verify my case before I make this statement to him.
I'm unable to find any Cisco reference to vlan-based QoS other than documents relative to using it for Policing, which is not his goal.
interface GigabitEthernet1/0/1
switchport access vlan 25
switchport mode access
switchport voice vlan 28
mls qos vlan-based
spanning-tree portfast
There must be a mapping required somewhere to associate vlan 28 with priority treatment and vlan 25 with default treatment. I'm just not sure how that mapping is created. Any input?
There are no access lists (other than basic security), policy maps, or class maps on the switch. My assertion to this customer is that he has an incomplete QoS configuration and has failed to properly establish a trust boundary at this port. I'm trying to verify my case before I make this statement to him.
I'm unable to find any Cisco reference to vlan-based QoS other than documents relative to using it for Policing, which is not his goal.