I have 2 3560's that are distrobution layer devices that aggregate serveral access layer switches in one of our offices. I want these switches to simply pass the ingress tagged QoS packets on out to our core network unchanged and retaining the original QoS value that was given in the access layer. Right now I have mls qos trust dscp configured on each trunk interface, but I'm just curious, if I use the global command "no mls qos rewrite ip dscp" would that allow me to not have to add the trust command on the trunk interface. From what I'm gathering from the configuration guide this tag will stop the switch from changing any QoS value by default. So if that is the case an untrusted interface won't set the CoS to 0 for example. Am I understanding this correctly?
Yes, that's right. That's called transparency mode, the way how the packet ingress that how it will be forwarded. Just image the switch is transparently forwarding packets without any additional modification.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.