Get interfaces or manually add an interface - is there any difference?

[Pawel_Rzepa]

Hi Team,

I'd like to understand if there is any functional difference between adding interfaces in Network Topology manually against using 'Get Interfaces' feature.

We used to add all interfaces manually. It worked, no issues.

Recently I tried to create a GRE tunnel on a cluster (R81.20). I followed sk169794. The only difference was that I added GRE interfaces manually instead of using 'Get Interfaces with Topology'.

GRE tunnel was up and running however all GRE packets sent by a cluster member were sent with the active cluster member physical interface IP as a source, not VIP.

I've been told that running 'Get Interfaces with Topology' and installing policy should solve the issue. I ran 'Get Interfaces with Topology' however that created about a hundred configuration changes and I'm not happy to publish them.

I always believed that 'Get Interfaces' is a helpful shortcut used to make all interface name/ip/spoofing group/etc creation easier. Is there anything else that happens behind the scene?

Regards,

Pawel