How to add additional Public IP Subnet

[Freddy650]

Hello,

We currently have two MX-250s, my question is: how can I add an additional public subnet? We currently have a /29 but we already ran out of IPs, so we purchased an additional block of 5 public IPs. So how do add it to my environment here so we can start using our new block? I don't want to reconfigure our current WAN IP's; this is a new additional block. Please help I'm trying to figure something out here. Please let me know if you need any additional details. Thanks to all in advance!! 

-Freddy 

[KarstenI]

When the ISP has configured it on the same link as your /29, you can directly start using the additional IPs in your NAT-config.

[GIdenJoe]

Alas there is no support for that on the MX.

The only thing your/ISP upstream router can do for you is do the NAT of both subnet ranges themselves and translate to a larger private range but translate each IP to another private IP (so no PAT).
And then you implement the PAT on the MX as you already are doing.