PFCP-Sxb
Introduced in ASN 2.5
Overview
PFCP Sxb metadata extraction and export provides session tracking for control-plane (CP) and user-plane (UP) metadata. ASN derives this metadata from PFCP signaling over the Sxb interface between the Packet Gateway Control Plane (PGW-C) and Packet Gateway User Plane (PGW-U).
Supported protocol
Transport protocol: UDP
Port: 8805
Supported PFCP Messages
ASN supports parsing and session tracking for the following PFCP Session Management messages:
PFCP Session Establishment Request
PFCP Session Establishment Response
PFCP Session Modification Request
PFCP Session Modification Response
PFCP Session Deletion Request
PFCP Session Deletion Response
These messages create, modify, and delete user-plane sessions. They include forwarding, QoS, charging, and usage-reporting rules.
Export Behavior
ASN exports normal records at every Kafka export interval.
ASN exports PRIO records when the PFCP session is deleted.
Each export contains the latest session data.
Scalability
The following scalability limits are supported:
PFCP Sessions
3 million
PDRs per Session
4
FARs per Session
4
QERs per Session
4
URRs per Session
4
Usage Reports
4
URR IDs per PDR
4
SDF Filters per PDR
4
Traffic Endpoints per Session
2
Redis statistics
pfcp_rx_pkt
Total PFCP packets received
pfcp_est_req
Total PFCP Session Establishment Requests received
pfcp_est_res
Total PFCP Session Establishment Responses received
pfcp_mod_req
Total PFCP Session Modification Requests received
pfcp_mod_res
Total PFCP Session Modification Responses received
pfcp_del_req
Total PFCP Session Deletion Requests received
pfcp_del_res
Total PFCP Session Deletion Responses received
pfcp_invalid_msg_type
PFCP packets with unsupported or invalid message type
pfcp_resp_without_req
PFCP responses received without matching request
pfcp_dup_req
Duplicate PFCP requests received
pfcp_non_cisco
Non-Cisco PFCP packets received
pfcp_cause_reject
PFCP responses with rejection cause
pfcp_unused_ie
Unused or unparsed PFCP Information Elements detected
pfcp_mbuf_created
Total mbufs created for PFCP processing
pfcp_mbuf_create_fail
Failed mbuf allocations for PFCP processing
pfcp_mbuf_deleted
Total mbufs freed after PFCP processing
pfcp_license_drop
PFCP packets dropped due to license limitation
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