Example of NTPv3 Configuration to NTPv4 Migration

Note

This procedure only applies to VSP 8600 Series.

Procedure

Configure a Segmented Management Instance.

Switch:1(config)#mgmt vlan 10
Switch:1(mgmt:vlan)#ip address 192.0.2.1/24
Switch:1(mgmt:vlan)# enable

Switch:1(config)#mgmt clip 
Switch:1(mgmt:clip)#ip address 198.51.100.1/32
Switch:1(mgmt:clip)#enable

Configure routing for the Management Instance.

For the VLAN interface, create a static route to reach the NTP server:

Switch:1(config)#mgmt vlan 
Switch:1(mgmt:vlan)#ip route 203.0.113.1/24 next-hop 192.0.2.2

OR for the CLIP interface:

Switch:1(config)#router ospf
Switch:1(config-ospf)#redistribute direct 
Switch:1(config-ospf)#redistribute direct enable 
Switch:1(config-ospf)#exit
Switch:1(config)#ip ospf apply redistribute direct

Verify connectivity between the Management Instance and the NTPv4 server.
```
Switch:1(config)#ping 203.0.113.1 mgmt
  
```
Disable NTP globally.
```
Switch:1(config)#no ntp
```
Change the NTP version.
```
Switch:1(config)#ntp version 4
```
Enable NTP globally.
```
Switch:1(config)#ntp
```
Enable NTP master.
```
Switch:1(config)#ntp master
```