Files
openairinterface5g/tests/nr-cuup/load-test.conf
T
Robert Schmidt 07629e29d6 Add CU-UP load tester and documentation
This is a simple CU-UP load tester. It sets up a configurable number of UEs in the
CU-UP, then sends GTP traffic in downlink/uplink in the N3-F1/F1-N3
direction at the CU-UP. It then compares the sent and received data.

Additional parameters, such as amount of traffic, test length, packet
size, and IP addresses/ports are configurable.

To run:

    mkdir build && cd build && cmake .. -GNinja && ninja nr-cuup nr-cuup-load-test params_libconfig
    ./tests/nr-cuup/nr-cuup-load-test
    ./nr-cuup -O ../tests/nr-cuup/load-test.conf

The tester should be able to detect lost and reordered packets.

Example lost: Receive order 2,3,5,6 (lost packet 4)
=> on packet 2, expected 2, next=expected+1=3
=> on packet 3, expected 3, next=expected+1=4
=> on packet 5, expected 4, diff=5-4=1 (lost 1), next=payload+1=6
=> on packet 6, expected 6
=> 1 lost

Example reordered: Receiver order 2,5,3,6 (lost packet 4)
=> on packet 2, expected 2, next=expected+1=3
=> on packet 5, expected 3, diff=5-3=2 (lost 2), next=payload+1=6
=> on packet 3, expected 6, (reduce lost by 1 to 1), next=expected=6
=> on packet 6, expected 6
=> 1 lost

Example reordered: Receiver order 2,5,3,4,6 (no losses)
2025-08-04 12:31:05 +02:00

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Active_gNBs = ( "gNB-OAI");
# Asn1_verbosity, choice in: none, info, annoying
Asn1_verbosity = "none";
gNBs =
(
{
////////// Identification parameters:
gNB_ID = 0xe00;
gNB_CU_UP_ID = 0xe00;
# cell_type = "CELL_MACRO_GNB";
gNB_name = "gNB-OAI";
// Tracking area code, 0x0000 and 0xfffe are reserved values
tracking_area_code = 1;
plmn_list = ({ mcc = 222; mnc = 01; mnc_length = 2; snssaiList = ({ sst = 1, sd = 0xffffff }) });
tr_s_preference = "f1";
local_s_address = "127.0.0.6";
remote_s_address = "127.0.0.1";
local_s_portc = 501;
local_s_portd = 2153;
remote_s_portc = 500;
remote_s_portd = 2153;
# ------- SCTP definitions
SCTP :
{
# Number of streams to use in input/output
SCTP_INSTREAMS = 2;
SCTP_OUTSTREAMS = 2;
};
E1_INTERFACE =
(
{
type = "up";
ipv4_cucp = "127.0.0.1";
ipv4_cuup = "127.0.0.6";
}
)
NETWORK_INTERFACES :
{
GNB_IPV4_ADDRESS_FOR_NG_AMF = "172.21.16.109";
GNB_IPV4_ADDRESS_FOR_NGU = "127.0.0.7";
GNB_PORT_FOR_S1U = 2152; # Spec 2152
};
}
);
log_config: {
global_log_level = "info";
};