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1. Cloning O-DU High code

   Code Block
   mkdir odu_high cd odu_high git clone "https://gerrit.o-ran-sc.org/r/o-du/l2"

   
   

2. Cloning O-DU Low code

   Code Block
   mkdir odu_low cd odu_low - git clone "https://gerrit.o-ran-sc.org/r/o-du/phy" - Download code from "https://github.com/intel/FlexRAN"

   
   

3. Install O-DU High pre-requisite libraries by following https://docs.o-ran-sc.org/projects/o-ran-sc-o-du-l2/en/latest/installation-guide.html .
4. Install O-DU Low by following https://docs.o-ran-sc.org/projects/o-ran-sc-o-du-phy/en/latest/index.html .

5. Compilation Preparation

   Code Block
   mkdir odu_high/l2/src/wls_lib mkdir odu_high/l2/src/dpdk_lib cp odu_low/phy/wls_lib/wls_lib.h odu_high/l2/src/wls_lib/ cp odu_low/dpdk-19.11/x86_64-native-linuxapp-gcc/include/rte_* odu_high/l2/src/dpdk_lib/

   
   

   Note
   title DPDK library
   O-DU low instructs to build DPDK using x86_64-native-linuxapp-icc O-DU high uses x86_64-native-linuxapp-gcc, or library will be missing.

   
   

6. Compilation

   Code Block
   cd odu_high/l2/build/odu make odu PHY=INTEL_L1 PHY_MODE=TIMER MACHINE=BIT64 MODE=FDD

   
   

   Note
   title Hardcoded Library Location
   The makefile of odu assumes the required libraries is located at /opt/intel Modification of the makefile is needed if the libraries are located at different location.

   
   

7. Execution - Bringing up L1 of O-DU Low

   Code Block

   cd odu_low/phy source ./setupenv.sh cd odu_low/FlexRAN/l1/bin/nr5g/gnb/l1 ./l1.sh -e Expected Output: Non BBU threads in application ================================================================== nr5g_gnb_phy2mac_api_proc_stats_thread: [PID: 8659] binding on [CPU 0] [PRIO: 0] [POLICY: 1] wls_rx_handler (non-rt): [PID: 8663] binding on [CPU 0] ================================================================== PHY>welcome to application console

   
   

   Note
   title Dynamic Library Path
   May need to include the paths to the following libraries in the environment variable LD_LIBRARY_PATH ./odu_low/FlexRAN/libs/cpa/bin ./odu_low/phy/wls_lib ./odu_low/phy/fhi_lib/lib/build

   
   

8. Execution - Bringing up FAPI Translator of O-DU Low

   Code Block
   cd odu_low/phy source ./setupenv.sh cd odu_low/phy/fapi_5g/bin/ ./oran_5g_fapi –cfg=oran_5g_fapi.cfg

   
   

9. Assign virtual IP addresses as follows:

   Code Block
   ifconfig <interface name>:ODU “192.168.130.81” ifconfig <interface name>:CU_STUB “192.168.130.82” ifconfig <interface name>:RIC_STUB “192.168.130.80”

   
   

10. Execution - Running CU Stub

    Code Block
    cd odu_high/bin/cu_stub ./cu_stub

    
    

11. Execution - Running RIC Stub

    Code Block
    cd odu_high/bin/ric_stub ./ric_stub

    
    

12. Execution - Running O-DU High

    Code Block
    cd odu_high/bin/odu export LD_LIBRARY_PATH=odu_low/phy/wls_lib/lib:$LD_LIBRARY_PATH ./odu

    
    

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