Multi-UE Connection with Different K & OPc

[howardswe499]

Hi @linouxis9 ,

Background info: Trying to connect multiple UEs with different K & OPc values to Nokia CMU. Checked out solution in #83.

I would like to try to connect 2 or more UEs to CMU at a time, without having to use another host.

I am using the following config with command sudo ./packetrusher multi-ue -n 2 --tunnel --dedicatedGnb, and I have configured core-facing interface to have ip of 192.168.98.192 & 192.168.98.193.

PR config for multi-ue

gnodeb:
  controlif:
    ip: "192.168.98.192"
    port: 9487
  dataif:
    ip: "192.168.98.192"
    port: 2152
  plmnlist:
    mcc: "001"
    mnc: "01"
    tac: [redacted]
    gnbid: "000001"
  slicesupportlist:
    sst: "01"
    sd: "000001" # optional, can be removed if not used

ue:
  msin: "9000700041"
  key: "[redacted]4D82"
  opc: "[redacted]AF1B"
  amf: "8001"
  sqn: "00000000" #000000000029
  dnn: [redacted]
  routingindicator: "0000"
  hplmn:
    mcc: "001"
    mnc: "01"
  snssai:
    sst: 01
    sd: "000001" # optional, can be removed if not used
  integrity:
    nia0: false
    nia1: false
    nia2: true
    nia3: false
  ciphering:
    nea0: true
    nea1: false
    nea2: true
    nea3: false
amfif:
  - ip: "10.246.112.18"
    port: 38412
logs:
    level: 4

ue:
  msin: "9000700042"
  key: "[redacted]E6F9"
  opc: "[redacted]6F9F"
  amf: "8001"
  sqn: "00000000" #000000000029
  dnn: [redacted]
  routingindicator: "0000"
  hplmn:
    mcc: "001"
    mnc: "01"
  snssai:
    sst: 01
    sd: "000001" # optional, can be removed if not used
  integrity:
    nia0: false
    nia1: false
    nia2: true
    nia3: false
  ciphering:
    nea0: true
    nea1: false
    nea2: true
    nea3: false
amfif:
  - ip: "10.246.112.18"
    port: 38412
logs:
    level: 4

PR Logs

user:~/PacketRusher $ sudo ./packetrusher multi-ue -n 2 --tunnel --dedicatedGnb
INFO[0000] Selecting 10.246.112.18 for host 10.246.112.18 as AMF's IP address 
INFO[0000] Selecting 192.168.98.192 for host 192.168.98.192 as gNodeB's N3/Data IP address 
INFO[0000] Selecting 192.168.98.192 for host 192.168.98.192 as gNodeB's N2/Control IP address 
...
INFO[0000] PacketRusher version 1.0.1                   
INFO[0000] ---------------------------------------      
INFO[0000] [TESTER] Starting test function: Testing registration of multiple UEs 
INFO[0000] [TESTER][UE] Number of UEs: 2                
INFO[0000] [TESTER][GNB] gNodeB control interface IP/Port: 192.168.98.192/9487~ 
INFO[0000] [TESTER][GNB] gNodeB data interface IP/Port: 192.168.98.192/2152 
INFO[0000] [TESTER][AMF] AMF IP/Port: 10.246.112.18/38412 
INFO[0000] ---------------------------------------      
INFO[0000] [GNB] SCTP/NGAP service is running           
INFO[0000] [GNB] Initiating NG Setup Request            
INFO[0000] [GNB][SCTP] Receive message in 0 stream      
INFO[0000] [GNB][NGAP] Receive NG Setup Response        
INFO[0000] [GNB][AMF] AMF Name: amf                     
INFO[0000] [GNB][AMF] State of AMF: Active              
INFO[0000] [GNB][AMF] Capacity of AMF: 25               
INFO[0000] [GNB][AMF] PLMNs Identities Supported by AMF -- mcc: 001 mnc:01 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:01 sd:000001 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:01 sd:000002 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:02 sd:000001 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:03 sd:000004 
INFO[0000] [GNB] SCTP/NGAP service is running           
INFO[0000] [GNB] Initiating NG Setup Request            
INFO[0000] [GNB][SCTP] Receive message in 0 stream      
INFO[0000] [GNB][NGAP] Receive NG Setup Response        
INFO[0000] [GNB][AMF] AMF Name: amf                     
INFO[0000] [GNB][AMF] State of AMF: Active              
INFO[0000] [GNB][AMF] Capacity of AMF: 25               
INFO[0000] [GNB][AMF] PLMNs Identities Supported by AMF -- mcc: 001 mnc:01 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:01 sd:000001 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:01 sd:000002 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:02 sd:000001 
INFO[0000] [GNB][AMF] List of AMF slices Supported by AMF -- sst:03 sd:000004 
INFO[0001] [TESTER] TESTING REGISTRATION USING IMSI 9000700042 UE 
INFO[0001] [GNB] Received incoming connection from new UE 
INFO[0001] [UE] Initiating Registration                 
INFO[0001] [UE] Switched from state 0 to state 1        
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][NGAP] Receive Downlink NAS Transport   
INFO[0001] [UE][NAS] Message without security header    
INFO[0001] [UE][NAS] Receive Authentication Request     
INFO[0001] [UE][NAS][MAC] Authenticity of the authentication request message: OK 
INFO[0001] [UE][NAS][SQN] SQN of the authentication request message: VALID 
INFO[0001] [UE][NAS] Send authentication response       
INFO[0001] [UE] Switched from state 1 to state 2        
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][NGAP] Receive Downlink NAS Transport   
INFO[0001] [UE][NAS] Message with security header       
INFO[0001] [UE][NAS] Message with integrity and with NEW 5G NAS SECURITY CONTEXT 
INFO[0001] [UE][NAS] successful NAS MAC verification    
INFO[0001] [UE][NAS] Receive Security Mode Command      
INFO[0001] [UE][NAS] Type of ciphering algorithm is 5G-EA0 
INFO[0001] [UE][NAS] Type of integrity protection algorithm is 128-5G-IA2 
INFO[0001] [TESTER] TESTING REGISTRATION USING IMSI 9000700043 UE 
INFO[0001] [GNB] Received incoming connection from new UE 
INFO[0001] [UE] Initiating Registration                 
INFO[0001] [UE] Switched from state 0 to state 1        
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][NGAP] Receive Initial Context Setup Request 
INFO[0001] [GNB][UE] UE Context was created with successful 
INFO[0001] [GNB][UE] UE RAN ID 1                        
INFO[0001] [GNB][UE] UE AMF ID 4294967424               
INFO[0001] [GNB][UE] UE Mobility Restrict --Plmn-- Mcc: 001 Mnc: 01 
INFO[0001] [GNB][UE] UE Masked Imeisv:                  
INFO[0001] [GNB][UE] Allowed Nssai-- Sst: [01] Sd: [000001] 
INFO[0001] [GNB][NGAP][AMF] Send Initial Context Setup Response. 
INFO[0001] [GNB] Initiating Initial Context Setup Response 
INFO[0001] [GNB][NGAP] No PDU Session to set up in InitialContextSetupResponse. 
INFO[0001] [UE][NAS] Message with security header       
INFO[0001] [UE][NAS] Message with integrity and ciphered 
INFO[0001] [UE][NAS] successful NAS CIPHERING           
INFO[0001] [UE][NAS] successful NAS MAC verification    
INFO[0001] [UE][NAS] Receive Registration Accept        
INFO[0001] [UE][NAS] UE 5G GUTI: &{119 11 [242 0 241 16 10 64 1 192 192 0 39]} 
INFO[0001] [UE] Switched from state 2 to state 3        
INFO[0001] [UE] Initiating New PDU Session              
INFO[0001] [UE] Initiating New PDU Session              
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][NGAP] Receive Downlink NAS Transport   
INFO[0001] [UE][NAS] Message without security header    
ERRO[0001] [UE][NAS] Receive Registration Reject        
ERRO[0001] [UE][NAS] UE received a 5GMM Failure, cause: No suitable cells in tracking area 
INFO[0001] [GNB][NGAP] Receive UE Context Release Command 
INFO[0001] [GNB] Initiating UE Context Complete         
WARN[0001] [UE][9000700043] Stopping UE as communication with gNB was closed 
INFO[0001] [GNB][NGAP] Releasing UE Context, cause: nas: Normal release 
INFO[0001] [GNB][SCTP] Receive message in 1 stream      
INFO[0001] [GNB][NGAP] Receive Downlink NAS Transport   
INFO[0001] [UE][NAS] Message with security header       
INFO[0001] [UE][NAS] Message with integrity and ciphered 
INFO[0001] [UE][NAS] successful NAS CIPHERING           
INFO[0001] [UE][NAS] successful NAS MAC verification    
INFO[0001] [UE][NAS] Receive Configuration Update Command 
INFO[0001] [UE] Initiating Configuration Update Complete 
INFO[0002] [GNB][SCTP] Receive message in 1 stream      
INFO[0002] [GNB][NGAP] Receive PDU Session Resource Setup Request 
INFO[0002] [GNB][NGAP][UE] PDU Session was created with successful. 
INFO[0002] [GNB][NGAP][UE] PDU Session Id: 1            
INFO[0002] [GNB][NGAP][UE] NSSAI Selected --- sst: NSSAI was not selected sd: NSSAI was not selected 
INFO[0002] [GNB][NGAP][UE] PDU Session Type: ipv4       
INFO[0002] [GNB][NGAP][UE] QOS Flow Identifier: 5       
INFO[0002] [GNB][NGAP][UE] Uplink Teid: 1074397461      
INFO[0002] [GNB][NGAP][UE] Downlink Teid: 1             
INFO[0002] [GNB][NGAP][UE] Non-Dynamic-5QI: 9           
INFO[0002] [GNB][NGAP][UE] Priority Level ARP: 9        
INFO[0002] [GNB][NGAP][UE] UPF Address: 10.246.112.1 :2152 
INFO[0002] [GNB] Initiating PDU Session Resource Setup Response 
INFO[0002] [UE][NAS] Message with security header       
INFO[0002] [UE][NAS] Message with integrity and ciphered 
INFO[0002] [UE][NAS] successful NAS CIPHERING           
INFO[0002] [UE][NAS] successful NAS MAC verification    
INFO[0002] [UE][NAS] Receive DL NAS Transport           
INFO[0002] [UE][NAS] Receiving PDU Session Establishment Accept 
INFO[0002] [UE][NAS] PDU session QoS RULES: [1 0 6 49 49 1 1 254 5] 
INFO[0002] [UE][NAS] PDU session DNN: 5gtest1           
INFO[0002] [UE][NAS] PDU session NSSAI -- sst: 1 sd: 001 
INFO[0002] [UE][NAS] PDU address received: 10.246.115.4 
INFO[0003] [UE][GTP] Interface val9000700042 has successfully been configured for UE 10.246.115.4 
INFO[0003] [UE][GTP] You can do traffic for this UE using VRF vrf9000700042, eg: 
INFO[0003] [UE][GTP] sudo ip vrf exec vrf9000700042 iperf3 -c IPERF_SERVER -p PORT -t 9000 

Please let me know if I have any errors in configuration! Thanks in advance.
Howard

[linouxis9]

Hi @howardswe499,

Thanks a lot for the report! This is in our TODO list, sadly it's unsupported for now. You either have to use the very same K / OPc for all UEs, or use multiple instances of PacketRusher (can be on the same host as long it is using different N2/N3 IPs for gNodeB) :(

I'll keep you updated once we support that feature.

Cheers,
Valentin

[howardswe499]

That's ok, I can live with the workaround~

Looking forward to the new feature 👍

Howard