Impact of changing the ipaddress assign to the MIdserver

[Insomaniac]

Hi Expert,

Due to some reasons we are planning to change the ip address which is assigned to the midserver.

I need to understand the impact of this.

I had analyze that if we do this we will lose the ip based authentication in the devices. But apart from this what will be the other impact of this.

[Shekhar Deshing]

Seems like while doing set up as per my understanding it never ask for IP address to Install MID server.On which OS you are installing that same IP address it takes normally.Seems like you are not able to modify the IP address.

Suppose if you install mid server on Windows Server it takes IP address of the same HOST.  

When you trying to Open the MID server it will not allow changing IP address it shows Read Only(Grayed Out).

While setting up MID servers it covers all IP ranges please see the following screenshot taken  

Thanks,

Shekhar Deshingkar,

[Insomaniac]

THanks Shekar,

Apologies i haven't provided the full requirement. So actually we are using this midserver for the discovery and now we want to change the ip address assigned to this. So teams has confirmed that they are not using the ip address to provide the access but apart fro this what else will be the impact. Surely it is going to disturb the discovery for those devices.

[Dave Ainsworth · Accepted solution]

Hi Insomniac,

Just to check, is this the IP address assigned to the host where the MID server is installed? Or the IP ranges assigned to a MID server in ServiceNow? Or IP addresses of devices being discovered?

Changing the IP address of the MID server host should not impact discovery as long as the MID server can still connect to the ServiceNow instance and can see the devices it needs to discover.

Changing the IP ranges assigned to the MIDs will not impact discovery as discovery will use the IP Ranges you have defined in the discovery schedules. It would affect Service Mapping if you use this though.

Changing the IP of any devices being discovered should not impact discovery. As long as the new IP addresses are in the Discovery Schedule IP Ranges/Range Sets and the MID servers can access them, the devices will still get discovered. In the OOTB identification rules, other identification rules such as serial number have a higher priority and the devices will still be identified and updated even with a new IP address.

Regards,

Dave

[Andrew Westerv4]

I agree with David that from ServiceNow and the MID server's perspective, changing the IP address of the server should not impact you. However, internal to your network you may encounter some issues. Network operations typically implement ACLs on their network devices for SNMP queries that require white-listing specific IP addresses that are allowed to request OIDs. They will likely need to update those rules and any other firewall exceptions that may have been designated.