Hello,
I have problem with configuring out-of-band interface. First of all I`ve never worked with any of Juniper producst before. Also I enherited this infrastructure after previous employees so it was already set-up and configured. Therefore I ask you for patience but I can learn fast 
first of all, we use 3 basic VLANs
VLAN 1 - 192.168.200.0/24 (Native vlan)
VLAN 20 - 172.16.20.0/24 (PC vlan)
VLAN 221 - 192.168.221.0/24 (MGMT vlan)
I had made this cabling set-up -->
Cisco:
interface FastEthernet0/5
description SROSPC-JUNTEST
switchport access vlan 20
switchport mode access
interface FastEthernet0/14
description MGMT MDXKESW06
switchport access vlan 221
switchport mode access
till now we used IP address 172.16.20.254 for managing this switch (cable to MGMT port was not connected). SSH and HTTPS was working but we have dedicated MGMT Vlan so I want to use IP from MGMT subnet.
I went to webinterface on EX 3300. I found TAB management access, changed it and commited it. But then HTTPS access stopped working, right now I can use CLI but still only via 172.16.20.254
I would like to de-configure 192.168.200.254 and 172.16.20.254 from the switch and use only 192.168.221.16 on MGMT interface for managing this switch.
actual configuration on EX 3300 -->
me0 {
unit 0 {
family inet;
}
}
vlan {
unit 0 {
family inet {
address 172.16.20.254/24;
}
}
unit 1 {
family inet {
address 192.168.200.254/24;
}
}
}
vme {
unit 0 {
family inet {
address 192.168.221.16/24;
}
}
}
}
root@MDXKESW06# run show interfaces terse | match me
bme0 up up
bme0.32768 up up inet 128.0.0.1/2
me0 up up
me0.0 up up inet
pime up up
vme up down
vme.0 up down inet 192.168.221.16/24
below is detailed interface configuration...
root@MDXKESW06# run show interfaces me0 detail
Physical interface: me0, Enabled, Physical link is Up
Interface index: 1, SNMP ifIndex: 33, Generation: 1
Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified, Speed: 100mbps
Device flags : Present Running
Interface flags: SNMP-Traps
Link type : Full-Duplex
Physical info : Unspecified
Hold-times : Up 0 ms, Down 0 ms
Current address: 0c:86:10:5a:14:3f, Hardware address: 0c:86:10:5a:14:3f
Alternate link address: Unspecified
Last flapped : 2016-07-27 11:02:38 CEST (06:23:48 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 4023164
Output bytes : 0
Input packets: 47508
Output packets: 830
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface me0.0 (Index 3) (SNMP ifIndex 34) (HW Token 4294967295) (Generation 1)
Flags: Up SNMP-Traps Encapsulation: ENET2
Bandwidth: 0
Traffic statistics:
Input bytes : 4023164
Output bytes : 211650
Input packets: 47508
Output packets: 830
Local statistics:
Input bytes : 4023164
Output bytes : 211650
Input packets: 47508
Output packets: 830
Protocol inet, MTU: 1500, Generation: 141, Route table: 0
Flags: Is-Primary
root@MDXKESW06# run show interfaces me0.0 detail
Logical interface me0.0 (Index 3) (SNMP ifIndex 34) (HW Token 4294967295) (Generation 1)
Flags: Up SNMP-Traps Encapsulation: ENET2
Bandwidth: 0
Traffic statistics:
Input bytes : 4023662
Output bytes : 212160
Input packets: 47511
Output packets: 832
Local statistics:
Input bytes : 4023662
Output bytes : 212160
Input packets: 47511
Output packets: 832
Protocol inet, MTU: 1500, Generation: 141, Route table: 0
Flags: Is-Primary
root@MDXKESW06# run show interfaces vme detail
Physical interface: vme, Enabled, Physical link is Down
Interface index: 66, SNMP ifIndex: 35, Generation: 4
Type: Mgmt-VLAN, Link-level type: Mgmt-VLAN, MTU: 1518, Clocking: Unspecified, Speed: 1000mbps
Device flags : Present Running
Interface flags: Hardware-Down SNMP-Traps
Link type : Full-Duplex
Link flags : None
Physical info : Unspecified
Hold-times : Up 0 ms, Down 0 ms
Current address: 0c:86:10:5a:14:02, Hardware address: 0c:86:10:5a:14:02
Alternate link address: Unspecified
Last flapped : Never
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Logical interface vme.0 (Index 5) (SNMP ifIndex 36) (HW Token 65535) (Generation 3)
Flags: Link-Layer-Down Device-Down SNMP-Traps Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Protocol inet, MTU: 1500, Generation: 206, Route table: 0
Flags: None
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 192.168.221/24, Local: 192.168.221.16, Broadcast: 192.168.221.255, Generation: 5
I am totally lame and lost with Juniper technologies, please help Thanks