Hello Gian, Well it depends on what you want to accomplish. For example if you want to trust cos from whatever device connected to the switchport you use mls qos trust cos. But if you want the. switchport to ONLY trust cisco phones you use mls qos trust device cisco-phone. Guys let me know if I'm incorrect in thinking this
Sent from my Verizon Wireless Phone ----- Reply message ----- From: "Gian Paolo" <[email protected]> Date: Tue, Apr 12, 2011 1:41 pm Subject: [OSL | CCIE_RS] mls qos trust cos To: "IPX ccie_rs" <[email protected]> Hi experts, I'm reviewing L2 QoS on 3560 and I need a clarification. If a cisco phone must be trusted on a port, do I need to add "mls qos trust cos" or just "mls qos trust device cisco-phone" is enough? On IPX VoD slide 718 or minute 96:32 of QoS lecture there are both, on Doc-CD example only one but it says "depending on trust setting": http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_58_se/command/reference/cli1.html#wp11906329 Regards, Gian Paolo _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
