spgw.conf

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S-GW : 
{
    NETWORK_INTERFACES : 
    {
        # S-GW binded interface for S11 communication (GTPV2-C), if none selected the ITTI message interface is used
        SGW_INTERFACE_NAME_FOR_S11              = "lo";                         # STRING, interface name, YOUR NETWORK CONFIG HERE
        SGW_IPV4_ADDRESS_FOR_S11                = "127.0.11.2/8";               # STRING, CIDR, YOUR NETWORK CONFIG HERE

        # S-GW binded interface for S1-U communication (GTPV1-U) can be ethernet interface, virtual ethernet interface, we don't advise wireless interfaces
        SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP    = "vxlan0";                       # STRING, interface name, YOUR NETWORK CONFIG HERE, USE "lo" if S-GW run on eNB host
        SGW_IPV4_ADDRESS_FOR_S1U_S12_S4_UP      = "10.10.40.2/24";           # STRING, CIDR, YOUR NETWORK CONFIG HERE
        SGW_IPV4_PORT_FOR_S1U_S12_S4_UP         = 2152;                         # INTEGER, port number, PREFER NOT CHANGE UNLESS YOU KNOW WHAT YOU ARE DOING

        # S-GW binded interface for S5 or S8 communication, not implemented, so leave it to none
        SGW_INTERFACE_NAME_FOR_S5_S8_UP         = "none";                       # STRING, interface name, DO NOT CHANGE (NOT IMPLEMENTED YET)
        SGW_IPV4_ADDRESS_FOR_S5_S8_UP           = "0.0.0.0/24";                 # STRING, CIDR, DO NOT CHANGE (NOT IMPLEMENTED YET)
    };
    
    INTERTASK_INTERFACE :
    {
        # max queue size per task
        ITTI_QUEUE_SIZE            = 2000000;                                   # INTEGER
    };

    LOGGING :
    {
        # OUTPUT choice in { "CONSOLE", "SYSLOG", `path to file`", "`IPv4@`:`TCP port num`"} 
        # `path to file` must start with '.' or '/'
        # if TCP stream choice, then you can easily dump the traffic on the remote or local host: nc -l `TCP port num` > received.txt
        OUTPUT            = "CONSOLE";                                          # see 3 lines above 
        #OUTPUT            = "SYSLOG";                                          # see 4 lines above 
        #OUTPUT            = "/tmp/spgw.log";                                   # see 5 lines above 
        #OUTPUT            = "127.0.0.1:5656";                                  # see 6 lines above 
        
        # THREAD_SAFE choice in { "yes", "no" } means use of thread safe intermediate buffer then a single thread pick each message log one
        # by one to flush it to the chosen output
        THREAD_SAFE       = "no";
        
        # COLOR choice in { "yes", "no" } means use of ANSI styling codes or no
        COLOR              = "yes";
        
        # Log level choice in { "EMERGENCY", "ALERT", "CRITICAL", "ERROR", "WARNING", "NOTICE", "INFO", "DEBUG", "TRACE"} 
        UDP_LOG_LEVEL      = "TRACE";
        GTPV1U_LOG_LEVEL   = "TRACE";
        GTPV2C_LOG_LEVEL   = "TRACE";
        SPGW_APP_LOG_LEVEL = "TRACE";
        S11_LOG_LEVEL      = "TRACE";
    };
};

P-GW = 
{
    NETWORK_INTERFACES : 
    {
        # P-GW binded interface for S5 or S8 communication, not implemented, so leave it to none
        PGW_INTERFACE_NAME_FOR_S5_S8          = "none";                         # STRING, interface name, DO NOT CHANGE (NOT IMPLEMENTED YET)

        # P-GW binded interface for SGI (egress/ingress internet traffic)
        PGW_INTERFACE_NAME_FOR_SGI            = "eth0";                         # STRING, YOUR NETWORK CONFIG HERE
        PGW_MASQUERADE_SGI                    = "yes";                           # STRING, {"yes", "no"}. YOUR NETWORK CONFIG HERE, will do NAT for you if you put "yes".
        UE_TCP_MSS_CLAMPING                   = "yes";                           # STRING, {"yes", "no"}. 
    };
    
    # Pool of UE assigned IP addresses
    # Do not make IP pools overlap
    # first IPv4 address X.Y.Z.1 is reserved for GTP network device on SPGW
    # Normally no more than 16 pools allowed, but since recent GTP kernel module use, only one pool allowed (TODO).
    IP_ADDRESS_POOL :
    {
        IPV4_LIST = (
                      "172.16.0.0/12"                                           # STRING, CIDR, YOUR NETWORK CONFIG HERE.
                    );
    };
    
    # DNS address communicated to UEs
    DEFAULT_DNS_IPV4_ADDRESS     = "8.8.8.8";                                   # YOUR NETWORK CONFIG HERE
    DEFAULT_DNS_SEC_IPV4_ADDRESS = "8.8.4.4";                                   # YOUR NETWORK CONFIG HERE

    # Non standard feature, normally should be set to "no", but you may need to set to yes for UE that do not explicitly request a PDN address through NAS signalling
    FORCE_PUSH_PROTOCOL_CONFIGURATION_OPTIONS = "no";                           # STRING, {"yes", "no"}. 
    UE_MTU                                    = 1500                            # INTEGER
};