Previous Behavior: The show user-plane-service statistics all CLI command does not display the PFCP IEs received in Sx Establishment or Sx Modification messages.

New Behavior: The show user-plane-service statistics all CLI command is enhanced to display the PFCP IEs such as FAR, URR, and PDRs received over N4 interface in Sx Establishment and Sx Modification messages.

Impact on customer: The enhanced output helps with improving debuggability.

Whenever you use an unauthorized DNS server, you can modify the request to readdress the DNS IPs to use authorized servers. A ruledef determines if a packet belongs to a DNS query. It also determines if the DNS query belongs to a set of authorized DNS servers. If the DNS query does not belong to the authorized DNS servers, the flow action picks up DNS servers from the readdress server list.

You can configure the readdress-server-list command under active-charging service. When the flow matches a ruledef, you can configure the flow action to use the servers from readdress-server-list.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > Deep Packet Inspection and Inline Services chapter.

The UPF datapath is managed by the session manager and VPP (fastpath) components. The session manager information is collected using StarOS CLIs whereas VPP information is collected using VPPCTL.

The show subscribers user-plane-only callid callid_value flows flow-id flow_value and show subscribers user-plane-only callid callid_value flows full commands are enhanced to display per flow VPP related information. The new statistics enhance the correlation of information from both components.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > UPF Troubleshooting Information chapter.

UPF supports granularity of packet drop statistics at session-level and instance-level. The granular-level information eases the debuggability of issues.

Whenever a packet is dropped, the respective cause along with the number of packets dropped are pegged at instance and session levels. This release introduces two CLI commands, show subscribers user-plane-only callid callid_value drop-statistics and show user-plane-service statistics drop-counter that provide specific drop reasons and the corresponding drop counters. These commands support the SxA, SxB, SxAB, and N4 interfaces.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > UPF Troubleshooting Information chapter.

Previous Behaviour: Both ToS marked Packets counter and Byte counter were available in IPv6 Traffic with DSCP Marking.

New Behaviour: Now, only the ToS marked Packets counter is available in IPv6 Traffic with DSCP Marking.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > DSCP Markings For Collapse Calls chapter.

Previous Behavior: UPF recalculated the URR volume quota values as per the usage after UP recovery.

New Behavior: The volume quota values provided by OCS must be the same after UP recovery.

In UPF, the boxer supports MPLS to switch MPLS traffic using VPP as the data plane forwarder.

This feature supports MPLS on the N6 interface for 5G deployments. The VPP MPLS stack configuration supports the forwarding information base (FIB) table with the FTN (FEC To NHLFE), and incoming label map (ILM) tables.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > MPLS Support on UPF chapter.