MX450 Can I use BGP without a VPN?

[DADA]

We are considering replacing our ISR4331, which uses BGP on the WAN side, with an MX450.(BGP is only used to communicate with ISPs, no other sites, etc.) When I check the documents, I see VPN (Auto-VPN, etc.) language across the board.(VPN between locations, etc.)

拠点間のVPNなど）

[KH]

Hey @DADA 

If you have a single site without any VPN Peers, you can still use BGP to learn and advertise routes to/from your BGP Neighbor. Those routes however will always be redistributed to AutoVPN Peers if they exist and subnets must be enabled on the VPN Page, otherwise it would just be between you and your neighbor and having AutoVPN peers isn't required for the setup but AutoVPN/Subnets must be enabled.

[DADA]

Thanks for the reply KH.
What do you mean by “the subnet must be enabled on the VPN page”?
Please tell me.

[KH · Accepted solution]

Hey @DADA 

We advertise routes via BGP if they are enabled on the Site to Site VPN Page like below:

If they are disabled they won't be advertised to your peer.

[DADA]

Hi！@KH 
Thank you so much!!