Dell PowerConnect 8100 Series User's Configuration Guide - Page 819

5 Exit interface configuration mode for the range of interfaces. 6 Enter interface configuration mode for the CNA-facing ports and configure the DCBx port role as auto-downstream. This step automatically enables PFC on the ports. console(config)#interface te1/0/1-3,te2/0/1-3 console(config-if)#lldp dcbx port-role auto-down console(config-if#exit 7 Enter Interface Configuration mode for the ports connect to an FCF on both switches in the stack to configure the DCBx port role as autoupstream. console(config)#interface te1/0/16-17,te2/0/16-17 console(config-if)#lldp dcbx port-role auto-up 8 Set the FIP snooping port mode as fcf to indicate that these ports are connected to a Fibre Channel forwarder. console(config-if)#fip-snooping port-mode fcf console(config-if)#exit 9 Optionally, use the FIP snooping show commands to verify the configuration, view FIP snooping sessions, and view information about the ports that are connected to end nodes or FCFs. Enhanced Transmission Selection Networks classify and prioritize traffic to provide different service characteristics to end user traffic flows. Administrators may wish to guarantee or limit bandwidth for certain traffic, ensure lossless behavior for other traffic, and control the queue discipline/drop characteristics for best-effort traffic. Additionally, it is desirable for a switch to support sharing bandwidth among bursty sources while still enabling prioritization of time-sensitive or management traffic that requires minimum latency. Enhanced transmission selection (ETS) provides uniform management for sharing bandwidth between congestion managed and traditional classes on a single bridged network. Using priority-based processing and weight allocations, Traffic Class Groups (TCGs) carrying different types of traffic such as LAN, SAN, and management traffic can be configured to provide Configuring Data Center Bridging Features 819