Код:
DES-3550:admin#config trusted_host 172.16.216.1 add telnet
Command: config trusted_host 172.16.216.1 add telnet
Fail!
DES-3550:admin#config trusted_host network 172.16.216.1/32 add tel
Command: config trusted_host network 172.16.216.1/32 add telnet
Fail!
DES-3550:admin#config trusted_host network 172.16.216.0/20 add telnet
Command: config trusted_host network 172.16.216.0/20 add telnet
Fail!
DES-3550:admin#sh sw
Command: show switch
Device Type : DES-3550 Fast-Ethernet Switch
Combo Port Type : 1000Base-T + 1000Base-T
MAC Address : 1C-AF-F7-09-9D-99
IP Address : 172.16.216.2 (Manual)
VLAN Name : 1272
Subnet Mask : 255.255.240.0
Default Gateway : 172.16.216.1
Boot PROM Version : Build 5.00.011
Firmware Version : Build 6.00.B49
Hardware Version : A5
в чем ошибка?