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What is GPON Monitor

GPON Monitor is an ASP.NET Core web application intended for quick diagnostic of Dasan Networks GPON OLTs and related ONTs.

System requirements:

GPON Monitor requires:

• .NET Core 1.1.0 compatible server (https://www.microsoft.com/net/core),
• Dasan Networks OLT running software version 6.xx or higher with configured SNMP service,
• routable connection between server and monitored OLT.

Installation and configuration (for Linux Debian 8.0)

Install .NET Core enviroment:

sudo apt-get install curl libunwind8 gettext
curl -sSL -o dotnet.tar.gz https://go.microsoft.com/fwlink/?LinkID=835021
sudo mkdir -p /opt/dotnet && sudo tar zxf dotnet.tar.gz -C /opt/dotnet
sudo ln -s /opt/dotnet/dotnet /usr/local/bin

Install supervisor and nginx:

sudo apt-get install supervisor nginx

Install GPON Monitor binaries

Download, unpack the latest version od GPONMonitor form https://github.com/bartekkois/GPONMonitor/releases and restore dependencies

curl -sSL -o dotnet.tar.gz https://github.com/bartekkois/GPONMonitor/releases/STH.tar.gz
sudo mkdir -p /var/www_aspnetcore/GPONmonitor && sudo tar zxf STH.tar.gz -C /www_aspnetcore/GPONmonitor
dotnet retore

Configure monitored OLTs

Configure monitored OLTs in GPONMonitor/devicesconfiguration.json (name and SNMP related variables as shown below).

{
  "DevicesConfiguration": {
    "Devices": [
      {
        "Name": "GPON OLT A",
        "IpAddress": "10.1.1.21",
        "SnmpPort": "161",
        "SnmpVersion": "2",
        "SnmpCommunity": "public",
        "SnmpTimeout": 3000
      },
      {
        "Name": "GPON OLT B",
        "IpAddress": "10.1.1.11",
        "SnmpPort": "161",
        "SnmpVersion": "2",
        "SnmpCommunity": "public",
        "SnmpTimeout": 3000
      },
      {
        "Name": "GPON OLT C",
        "IpAddress": "10.2.1.11",
        "SnmpPort": "161",
        "SnmpVersion": "2",
        "SnmpCommunity": "public",
        "SnmpTimeout": 3000
      }
    ]
  }
} 

Configure supervisor:

Change the default configuration in /etc/supervisor/conf.d/GPONMonitor.conf to:

[program:GPONMonitor]
command=/usr/local/bin/dotnet /var/www_aspnetcore/GPONMonitor/GPONMonitor.dll
directory=/var/www_aspnetcore/GPONMonitor
autostart=true
autorestart=true
stderr_logfile=/var/log/GPONMonitor.err.log
stdout_logfile=/var/log/GPONMonitor.out.log
environment=ASPNETCORE_ENVIRONMENT=Production
user=www-data
stopsignal=INT

Restart supervisor:

service supervisor restart

Configure and restart nginx:

Change the default configuration in /etc/nginx/sites-available/default to:

server {
        listen 5001 default_server;
        listen [::]:5001 default_server;
        root /var/www_aspnetcore/GPONMonitor;
        server_name _;

        location / {
                    proxy_pass http://localhost:5000;
                    proxy_http_version 1.1;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection keep-alive;
                    proxy_set_header Host $host;
                    proxy_cache_bypass $http_upgrade;
        }
}

Restart nginx:

service nginx restart

Usage

Access GPON Monitor through your web browser at http://your_server_ip:5001

Security considerations

For security reasons we highly encourage NOT to expose this application to the public internet and to use it ONLY in your intranet or through the VPN.