Vlan protocol down

show int vlan 10 
 Vlan 10 is up, line protocol is down




Что бы поднялся интерфейс необходимо разрешить STP на нём!

Cisco IOS NetFlow

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6555/ps6601/prod_white_paper0900aecd80406232.html

NetFlow Recent Cisco Device Support Matrix

Device	Supported
Cisco 800, 1700, 2600	Yes
Cisco 1800, 2800, 3800	Yes
Cisco 4500	Yes
Cisco 6500	Yes
Cisco7200, 7300, 7500	Yes
Cisco 7600	Yes
Cisco 10000, 12000, CRS-1	Yes
Cisco 2900, 3500, 3660, 3750	No