408 lines
15 KiB
Markdown
408 lines
15 KiB
Markdown
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---
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title: Moving 4G EPC to the CUPS
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head_inline: "<style> .blue { color: blue; } </style>"
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---
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This post explains how to compile and install the source code on **Debian/Ubuntu** based Linux Distribution.
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{: .blue}
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### Getting MongoDB
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---
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Install MongoDB with package manager. It is used as database for the HSS and PCRF.
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```bash
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$ sudo apt update
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$ sudo apt install mongodb
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$ sudo systemctl start mongodb (if '/usr/bin/mongod' is not running)
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$ sudo systemctl enable mongodb (ensure to automatically start it on system boot)
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```
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### Setting up TUN device (not persistent after rebooting)
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---
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Create the TUN device with the interface name `ogstun`.
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```bash
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$ sudo ip tuntap add name ogstun mode tun
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$ sudo ip addr add 10.45.0.1/16 dev ogstun
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$ sudo ip addr add cafe::1/64 dev ogstun
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$ sudo ip link set ogstun up
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```
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**Tip:** The script provided in [$GIT_REPO/misc/netconf.sh](https://github.com/{{ site.github_username }}/open5gs/blob/master/misc/netconf.sh) makes it easy to configure the TUN device as follows:
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`$ sudo ./misc/netconf.sh`
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{: .notice--info}
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### Building Open5GS
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---
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Install the dependencies for building the source code.
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```bash
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$ sudo apt install python3-pip python3-setuptools python3-wheel ninja-build build-essential flex bison git libsctp-dev libgnutls28-dev libgcrypt-dev libssl-dev libidn11-dev libmongoc-dev libbson-dev libyaml-dev libmicrohttpd-dev libcurl4-gnutls-dev meson
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```
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Git clone.
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```bash
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$ git clone https://github.com/{{ site.github_username }}/open5gs
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```
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To compile with meson:
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```bash
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$ cd open5gs
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$ meson build --prefix=`pwd`/install
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$ ninja -C build
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```
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Check whether the compilation is correct.
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```bash
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$ meson test
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```
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**Tip:** You can also check the result of `ninja -C build test` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || pfcp || gtp`. You can see the virtually created packets. [[testcups.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcups.pcapng)
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{: .notice--info}
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You need to perform the **installation process**.
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```bash
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$ cd build
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$ ninja install
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$ cd ../
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```
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### Configure Open5GS
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---
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Modify [install/etc/open5gs/mme.yaml](https://github.com/{{ site.github_username }}/open5gs/blob/master/configs/open5gs/mme.yaml.in) to set the S1AP IP address, PLMN ID, and TAC.
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In the below example we
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- use MCC-MNC of 901-70, as this is the home network of the default IMSIs of the sysmoUSIM-SJS1 cards.
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- use 192.168.0.100 for the S1AP/GTP-U connection of MME/SGW-U to the eNB
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```diff
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diff -u /etc/open5gs/mme.yaml.old /etc/open5gs/mme.yaml
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--- mme.yaml.old 2018-04-15 18:28:31.000000000 +0900
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+++ mme.yaml 2018-04-15 19:53:10.000000000 +0900
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@@ -204,20 +204,20 @@ logger:
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mme:
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freeDiameter: @sysconfdir@/freeDiameter/mme.conf
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s1ap:
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- addr: 127.0.0.1
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+ addr: 192.168.0.100
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gtpc:
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addr: 127.0.0.1
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gummei:
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plmn_id:
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- mcc: 001
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- mnc: 01
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+ mcc: 901
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+ mnc: 70
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mme_gid: 2
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mme_code: 1
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tai:
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plmn_id:
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- mcc: 001
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- mnc: 01
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- tac: 1
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+ mcc: 901
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+ mnc: 70
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+ tac: 7
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security:
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integrity_order : [ EIA1, EIA2, EIA0 ]
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ciphering_order : [ EEA0, EEA1, EEA2 ]
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```
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Modify [install/etc/open5gs/sgwu.yaml](https://github.com/{{ site.github_username }}/open5gs/blob/master/configs/open5gs/sgwu.yaml.in) to set the GTP-U IP address.
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```diff
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diff -u /etc/open5gs/sgwu.yaml.old /etc/open5gs/sgwu.yaml
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--- sgwu.yaml.old 2018-04-15 18:30:25.000000000 +0900
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+++ sgwu.yaml 2018-04-15 18:30:30.000000000 +0900
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@@ -51,7 +51,7 @@ logger:
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#
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sgwu:
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gtpu:
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- addr: 127.0.0.7
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+ addr: 192.168.0.100
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pfcp:
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addr: 127.0.0.7
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```
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If you modify the config files while Open5GS daemons are running, please restart them
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### Running Open5GS
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---
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Specify the absolute path to the sharead library as follows.
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```bash
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$ echo $(cd $(dirname ./install/lib/x86_64-linux-gnu/) && pwd -P)/$(basename ./install/lib/x86_64-linux-gnu/)
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/home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu
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$ export LD_LIBRARY_PATH=/home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu
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$ ldd ./install/bin/open5gs-mmed
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...
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libogsapp.so.1 => /home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu/libogsapp.so.1 (0x00007f161ab51000)
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libogscore.so.1 => /home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu/libogscore.so.1 (0x00007f161a922000)
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libogssctp.so.1 => /home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu/libogssctp.so.1 (0x00007f161a71d000)
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libogss1ap.so.1 => /home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu/libogss1ap.so.1 (0x00007f161a519000)
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...
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```
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If you want to set the shared library path permanently, you can use ldconfig.
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```bash
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$ sudo sh -c "echo /home/acetcom/Documents/git/open5gs/install/lib/x86_64-linux-gnu > /etc/ld.so.conf.d/open5gs.conf"
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$ sudo ldconfig
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```
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Now let's get started.
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```bash
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$ ./install/bin/open5gs-nrfd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:34:39.277: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/nrf.yaml' (../src/main.c:54)
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08/12 19:34:39.277: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/nrf.log' (../src/main.c:57)
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08/12 19:34:39.278: [app] INFO: NRF initialize...done (../src/nrf/app.c:31)
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08/12 19:34:39.278: [sbi] INFO: sbi_server() [127.0.0.1]:7777 (../lib/sbi/server.c:298)
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08/12 19:34:39.278: [sbi] INFO: sbi_server() [::1]:7777 (../lib/sbi/server.c:298
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$ ./install/bin/open5gs-mmed
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:35:00.505: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/mme.yaml' (../src/main.c:54)
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08/12 19:35:00.506: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/mme.log' (../src/main.c:57)
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08/12 19:35:00.560: [gtp] INFO: gtp_server() [127.0.0.1]:2123 (../lib/gtp/path.c:32)
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08/12 19:35:00.560: [app] INFO: MME initialize...done (../src/mme/app-init.c:33)
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08/12 19:35:00.560: [gtp] INFO: gtp_connect() [127.0.0.6]:2123 (../lib/gtp/path.c:59)
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08/12 19:35:00.560: [mme] INFO: s1ap_server() [127.0.0.1]:36412 (../src/mme/s1ap-sctp.c:57)
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$ ./install/bin/open5gs-sgwcd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:35:15.866: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/sgwc.yaml' (../src/main.c:54)
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08/12 19:35:15.866: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/sgwc.log' (../src/main.c:57)
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08/12 19:35:15.872: [app] INFO: SGW-C initialize...done (../src/sgwc/app.c:31)
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08/12 19:35:15.873: [gtp] INFO: gtp_server() [127.0.0.6]:2123 (../lib/gtp/path.c:32)
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08/12 19:35:15.873: [pfcp] INFO: pfcp_server() [127.0.0.6]:8805 (../lib/pfcp/path.c:32)
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08/12 19:35:15.873: [pfcp] INFO: ogs_pfcp_connect() [127.0.0.7]:8805 (../lib/pfcp/path.c:60)
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$ ./install/bin/open5gs-sgwud
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:35:37.768: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/sgwu.yaml' (../src/main.c:54)
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08/12 19:35:37.768: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/sgwc.log' (../src/main.c:57)
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08/12 19:35:37.771: [pfcp] INFO: pfcp_server() [127.0.0.7]:8805 (../lib/pfcp/path.c:32)
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08/12 19:35:37.771: [app] INFO: SGW-U initialize...done (../src/sgwu/app.c:31)
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08/12 19:35:37.773: [gtp] INFO: gtp_server() [127.0.0.7]:2152 (../lib/gtp/path.c:32)
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$ ./install/bin/open5gs-smfd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:35:50.948: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/smf.yaml' (../src/main.c:54)
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08/12 19:35:50.948: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/smf.log' (../src/main.c:57)
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08/12 19:35:50.999: [gtp] INFO: gtp_server() [127.0.0.3]:2123 (../lib/gtp/path.c:32)
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08/12 19:35:50.999: [app] INFO: SMF initialize...done (../src/smf/app.c:31)
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08/12 19:35:50.999: [gtp] INFO: gtp_server() [::1]:2123 (../lib/gtp/path.c:32)
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08/12 19:35:50.999: [pfcp] INFO: pfcp_server() [127.0.0.3]:8805 (../lib/pfcp/path.c:32)
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08/12 19:35:50.999: [pfcp] INFO: pfcp_server() [::1]:8805 (../lib/pfcp/path.c:32)
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08/12 19:35:50.999: [pfcp] INFO: ogs_pfcp_connect() [127.0.0.4]:8805 (../lib/pfcp/path.c:60)
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08/12 19:35:50.999: [sbi] INFO: sbi_server() [127.0.0.3]:7777 (../lib/sbi/server.c:298)
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$ ./install/bin/open5gs-upfd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:36:03.980: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/upf.yaml' (../src/main.c:54)
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08/12 19:36:03.981: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/upf.log' (../src/main.c:57)
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08/12 19:36:03.984: [pfcp] INFO: pfcp_server() [127.0.0.4]:8805 (../lib/pfcp/path.c:32)
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08/12 19:36:03.984: [app] INFO: UPF initialize...done (../src/upf/app.c:31)
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08/12 19:36:03.984: [gtp] INFO: gtp_server() [127.0.0.4]:2152 (../lib/gtp/path.c:32)
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08/12 19:36:03.984: [gtp] INFO: gtp_server() [::1]:2152 (../lib/gtp/path.c:32)
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$ ./install/bin/open5gs-hssd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:36:15.670: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/hss.yaml' (../src/main.c:54)
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08/12 19:36:15.670: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/hss.log' (../src/main.c:57)
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08/12 19:36:15.671: [dbi] INFO: MongoDB URI: 'mongodb://localhost/open5gs' (../lib/dbi/ogs-mongoc.c:99)
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08/12 19:36:15.693: [app] INFO: HSS initialize...done (../src/hss/app-init.c:31)
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$ ./install/bin/open5gs-pcrfd
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Open5GS daemon v1.3.0-194-gc674984+
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08/12 19:36:30.356: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/pcrf.yaml' (../src/main.c:54)
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08/12 19:36:30.356: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/pcrf.log' (../src/main.c:57)
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08/12 19:36:30.358: [dbi] INFO: MongoDB URI: 'mongodb://localhost/open5gs' (../lib/dbi/ogs-mongoc.c:99)
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08/12 19:36:30.387: [app] INFO: PCRF initialize...done (../src/pcrf/app-init.c:31)
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```
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Several command line options are provided.
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```bash
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$ ./install/bin/open5gs-mmed -h
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Usage: ./install/bin/open5gs-mmed [options]
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Options:
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-c filename : set configuration file
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-l filename : set logging file
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-e level : set global log-level (default:info)
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-m domain : set log-domain (e.g. mme:sgw:gtp)
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-d : print lots of debugging information
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-t : print tracing information for developer
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-D : start as a daemon
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-v : show version number and exit
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-h : show this message and exit
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```
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You can also copy the binaries to /usr/bin to be able to run them from anywhere on the system.
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```bash
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$ cp open5gs* /usr/bin/
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```
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For convenience, you can execute all network elements at once by using the following command.
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```bash
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$ cd build
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$ vi configs/app.yaml ## check the configuration
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$ ./test/app/app ## run all network elements
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```
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### Building the WebUI of Open5GS
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---
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[Node.js](https://nodejs.org/) is required to build WebUI of Open5GS
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```bash
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$ sudo apt install curl
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$ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
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$ sudo apt install nodejs
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```
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Install the dependencies to run WebUI
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```bash
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$ cd webui
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$ npm install
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```
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The WebUI runs as an [npm](https://www.npmjs.com/) script.
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```bash
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$ npm run dev
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```
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### Register Subscriber Information
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---
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Connect to `http://localhost:3000` and login with **admin** account.
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> Username : admin
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> Password : 1423
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**Note:**
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You can change the password in _Account_ Menu.
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{: .notice--info}
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To add subscriber information, you can do WebUI operations in the following order:
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1. Go to `Subscriber` Menu.
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2. Click `+` Button to add a new subscriber.
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3. Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
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4. Click `SAVE` Button
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**Tip:** This addition immediately affects Open5GS without restarting any daemon.
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{: .notice--warning}
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### IP routing + NAT for UE internet connectivity
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---
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To allow your phones to connect to the internet, you must run the following command on the host running Open5GS-PGW:
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```bash
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### Check IP Table 'forward'
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$ sudo iptables -L
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Chain INPUT (policy ACCEPT)
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target prot opt source destination
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Chain FORWARD (policy ACCEPT)
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target prot opt source destination
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|
Chain OUTPUT (policy ACCEPT)
|
||
|
target prot opt source destination
|
||
|
|
||
|
### Check IP Table 'nat'
|
||
|
$ sudo iptables -L -t nat
|
||
|
Chain PREROUTING (policy ACCEPT)
|
||
|
target prot opt source destination
|
||
|
|
||
|
Chain INPUT (policy ACCEPT)
|
||
|
target prot opt source destination
|
||
|
|
||
|
Chain OUTPUT (policy ACCEPT)
|
||
|
target prot opt source destination
|
||
|
|
||
|
Chain POSTROUTING (policy ACCEPT)
|
||
|
target prot opt source destination
|
||
|
|
||
|
### Enable IPv4 Forwarding
|
||
|
$ sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
|
||
|
|
||
|
### Add NAT Rule
|
||
|
$ sudo iptables -t nat -A POSTROUTING -s 10.45.0.0/16 ! -o ogstun -j MASQUERADE
|
||
|
```
|
||
|
|
||
|
**Note:** The above assumes you do not have any existing rules in the filter and nat tables. If a program such as docker has already set up rules, you may need to add the Open5GS related rules differently.
|
||
|
{: .notice--danger}
|
||
|
|
||
|
### Turn on your eNodeB and Phone
|
||
|
---
|
||
|
|
||
|
- You can see actual traffic through wireshark -- [[srsenb.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/srsenb.pcapng).
|
||
|
- You can view the log at `$INSTALL_PREFIX/var/log/open5gs/*.log`.
|
||
|
|
||
|
### Troubleshooting
|
||
|
---
|
||
|
|
||
|
Debugging tools can help you troubleshoot problems.
|
||
|
|
||
|
- [GDB](https://www.gnu.org/software/gdb/) can be used as below:
|
||
|
|
||
|
```bash
|
||
|
$ gdb ./open5gs-mmed
|
||
|
```
|
||
|
|
||
|
- On *Mac OS X*, you can use the [LLDB](https://lldb.llvm.org/).
|
||
|
|
||
|
```bash
|
||
|
$ lldb ./open5gs-mmed
|
||
|
```
|
||
|
|
||
|
You can use the command line option[`-d`] to record more logs.
|
||
|
|
||
|
```bash
|
||
|
$ ./install/bin/open5gs-mmed -d
|
||
|
Open5GS daemon v1.3.0-194-gc674984+
|
||
|
|
||
|
08/12 19:38:40.968: [app] INFO: Configuration: '/home/acetcom/Documents/git/open5gs/install/etc/open5gs/mme.yaml' (../src/main.c:54)
|
||
|
08/12 19:38:40.968: [app] INFO: File Logging: '/home/acetcom/Documents/git/open5gs/install/var/log/open5gs/mme.log' (../src/main.c:57)
|
||
|
08/12 19:38:40.968: [app] INFO: LOG-LEVEL: 'debug' (../src/main.c:60)
|
||
|
08/12 19:38:41.076: [thread] DEBUG: [0x7ff5d26adb18] worker signal (../lib/core/ogs-thread.c:66)
|
||
|
08/12 19:38:41.076: [mme] DEBUG: mme_state_initial(): INIT
|
||
|
(../src/mme/mme-sm.c:82)
|
||
|
08/12 19:38:41.076: [thread] DEBUG: [0x7ff5d26adb18] thread started (../lib/core/ogs-thread.c:101)
|
||
|
08/12 19:38:41.076: [mme] DEBUG: mme_state_operational(): ENTRY
|
||
|
(../src/mme/mme-sm.c:128)
|
||
|
08/12 19:38:41.076: [app] INFO: MME initialize...done (../src/mme/app-init.c:33)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: socket create(2:2:17) (../lib/core/ogs-socket.c:92)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: udp_socket() family:2 (../lib/core/ogs-udp.c:31)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: socket bind 127.0.0.1:2123 (../lib/core/ogs-socket.c:117)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: udp_server() [127.0.0.1]:2123 (../lib/core/ogs-udp.c:55)
|
||
|
08/12 19:38:41.076: [gtp] INFO: gtp_server() [127.0.0.1]:2123 (../lib/gtp/path.c:32)
|
||
|
08/12 19:38:41.076: [gtp] INFO: gtp_connect() [127.0.0.6]:2123 (../lib/gtp/path.c:59)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: socket create(2:1:132) (../lib/core/ogs-socket.c:92)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: socket bind 127.0.0.1:36412 (../lib/core/ogs-socket.c:117)
|
||
|
08/12 19:38:41.076: [sock] DEBUG: sctp_server() [127.0.0.1]:36412 (../lib/sctp/ogs-lksctp.c:100)
|
||
|
08/12 19:38:41.076: [mme] INFO: s1ap_server() [127.0.0.1]:36412 (../src/mme/s1ap-sctp.c:57)
|
||
|
```
|