Junos Multi-Access User Plane support for SGW-U and PGW-U co-location

Junos Multi-Access User Plane provides a long-route implementation as a replacement for a filter-based implementation to steer traffic to the anchor Packet Forwarding Engine. The benefits are:

•  An external loopback connection to forward data when both the SGW-U and PGW-U are colocated in the same MX Series router is no longer necessary.
•  The firewall configuration to filter and route GTP packets to the anchor PFE is no longer necessary. You do not need to make any CLI configuration changes to take advantage of this enhancement. However:
•  You can remove the firewall filter for GTP packets.
•  To optimize throughput of 4G traffic, you can attach a specific 4G gateway type (PGW-U or SGWU) to a specific anchor PFE by adding the new colocated-4g-pgw or colocated-4g-sgw option at the [edit services mobile-edge gateways saegw system anchor-pfes interface interface-name] hierarchy level.