open5gs/docs/_docs/guide/01-quickstart.md

---
title: Qucikstart
---

**Note:** NextEPC supports installation of packages in *Debian/Ubuntu and openSUSE* environments. *CentOS, Fedora, FreeBSD, and Mac OSX* require you to [build with source code]({{ site.url }}{{ site.baseurl }}/docs/guide/02-building-nextepc-from-sources)
{: .notice--warning}

### Install NextEPC with a Package Manager
---

The NextEPC package is available on the recent versions of *Ubuntu*.

```bash
$ sudo apt update
$ sudo apt install software-properties-common
$ sudo add-apt-repository ppa:open5gs/latest
$ sudo apt update
$ sudo apt install nextepc
```

The NextEPC package is also available on [OBS](https://build.opensuse.org/package/show/home:acetcom:open5gs:snapshot/nextepc). First, install the authentication key as shown below.

```bash
$ sudo apt update
$ sudo apt install wget gnupg
$ wget https://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/Release.key
$ sudo apt-key add Release.key

```

In Debian 9.0(stretch), you can install it as follows:

```bash
$ sudo sh -c "echo 'deb http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/ ./' > /etc/apt/sources.list.d/open5gs.list"
$ sudo apt update
$ sudo apt install nextepc
```

Other Linux distributions can be installed by changing the path.

```
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Raspbian_9.0/
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_16.04/
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_17.10/
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/
http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.10/
```

[Martin Hauke](https://build.opensuse.org/user/show/mnhauke) packaged NextEPC for *openSUSE* on [OBS](https://build.opensuse.org/package/show/home:mnhauke:nextepc/nextepc).

```bash
$ sudo zypper addrepo -f obs://home:mnhauke:nextepc home:mnhauke:nextepc
$ sudo zypper install nextepc
$ sudo zypper install mongodb-server mongodb-shell
```

### Configure NextEPC
---

Modify [/etc/nextepc/mme.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/mme.conf.in) to set the S1AP/GTP-C IP address, PLMN ID, and TAC

```diff
diff -u /etc/nextepc/mme.conf.old /etc/nextepc/mme.conf
--- mme.conf.old	2018-04-15 18:28:31.000000000 +0900
+++ mme.conf	2018-04-15 19:53:10.000000000 +0900
@@ -8,18 +8,20 @@ parameter:
 mme:
     freeDiameter: mme.conf
     s1ap:
+      addr: 192.168.0.100
     gtpc:
+      addr: 192.168.0.100
     gummei:
       plmn_id:
-        mcc: 001
-        mnc: 01
+        mcc: 901
+        mnc: 70
       mme_gid: 2
       mme_code: 1
     tai:
       plmn_id:
-        mcc: 001
-        mnc: 01
-      tac: 12345
+        mcc: 901
+        mnc: 70
+      tac: 7
     security:
         integrity_order : [ EIA1, EIA2, EIA0 ]
         ciphering_order : [ EEA0, EEA1, EEA2 ]
```

Modify [/etc/nextepc/sgw.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/sgw.conf.in) to set the GTP-U IP address.  
```diff
diff -u /etc/nextepc/sgw.conf.old /etc/nextepc/sgw.conf
--- sgw.conf.old	2018-04-15 18:30:25.000000000 +0900
+++ sgw.conf	2018-04-15 18:30:30.000000000 +0900
@@ -14,3 +14,4 @@
     gtpc:
       addr: 127.0.0.2
     gtpu:
+      addr: 192.168.0.100
```

After changing conf files, please restart NextEPC daemons.

```bash
$ sudo systemctl restart nextepc-mmed
$ sudo systemctl restart nextepc-sgwd
```

### Install WebUI of NextEPC
---

[Node.js](https://nodejs.org/) is required to install WebUI of NextEPC

1. *Debian and Ubuntu* based Linux distributions can install [Node.js](https://nodejs.org/) as follows:

    ```bash
    $ sudo apt update
    $ sudo apt install curl
    $ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
    $ sudo apt install nodejs
    ```

2. To install [Node.js](https://nodejs.org/) on *openSUSE*, run the following:

    ```bash
    $ sudo zypper install nodejs8
    ```

You can now install WebUI of NextEPC.

```bash
$ curl -sL {{ site.url }}{{ site.baseurl }}/assets/webui/install | sudo -E bash -
```

### Register Subscriber Information
---

Connect to `http://localhost:3000` and login with **admin** account.

> Username : admin  
> Password : 1423

**Tip:** You can change the password in _Account_ Menu.
{: .notice--info}

To add subscriber information, you can do WebUI operations in the following order:

  1. Go to `Subscriber` Menu.
  2. Click `+` Button to add a new subscriber.
  3. Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
  4. Click `SAVE` Button

**Tip:** This addition immediately affects NextEPC without restaring any daemon.
{: .notice--info}


### Adding a route for UE to have Internet connectivity
---

If your phone can connect to internet, you must run the following command in NextEPC-PGW installed host. 

```bash
### Check IP Tables
$ sudo iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

### Check NAT Tables
$ 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 45.45.0.0/16 ! -o pgwtun -j MASQUERADE
```

**Note:** For the first time, it is a good condition if you do not have any rules in the IP/NAT tables. If a program such as docker has already set up a rule, you will need to add a rule 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 `/var/log/nextepc/*.log`.

### Troubleshooting
---

Problem with NextEPC can be filed as [GitHub Issues](https://github.com/open5gs/nextepc/issues). Please include the following to get help:

- Attach `*.pcapng` file created by wireskark.
- Attach configuration files at `/etc/nextepc/*.conf`.
- Attach log files at `/var/log/nextepc/*.log`.

You can modify the configuration file to record more logs.

```diff
diff -u /etc/nextepc/mme.conf.old /etc/nextepc/mme.conf
--- mme.conf.old	2018-04-15 18:28:31.000000000 +0900
+++ mme.conf	2018-04-15 19:53:10.000000000 +0900
@@ -2,6 +2,7 @@

 logger:
     file: @LOCALSTATE_DIR@/log/nextepc/mme.log
+    level: debug

 parameter:
```

After changing conf files, please restart NextEPC daemons.

```bash
$ sudo systemctl restart nextepc-mmed
$ sudo systemctl restart nextepc-sgwd
```

### Uninstall NextEPC and WebUI

How to remove NextEPC package:

1. On *Ubuntu*:

    ```bash
    $ sudo apt purge nextepc
    $ sudo apt autoremove
    ```

2. On *openSUSE*:

    ```bash
    $ sudo zypper rm nextepc
    ```

You may need to remove manually `/var/log/nextepc` unless it is empty.

```bash
$ sudo rm -Rf /var/log/nextepc
```

The WebUI of NextEPC can be removed as follows:

```bash
curl -sL {{ site.url }}{{ site.baseurl }}/assets/webui/uninstall | sudo -E bash -
```