Monitoring BGP using NAGIOS

We can use check_bgp NAGIOS plugin for monitoring BGP. Visit  http://exchange.nagios.org/directory/Plugins/Network-Protocols/BGP-2D4/check_bgp/details for more details.

How to install and configure check_bgp plugin?

In the demonstration, I will be using NAGIOS server installed in Ubuntu Linux, and i want to monitor BGP in a Cisco ASR 1006 router. Since this plugin uses BGP4-MIB and SNMP, It can be used to monitor any router with SNMP.

1. Download check_bgp.pl perl script from the link given above. 0.4 is the recent version.

How to find which application is using a TCP port in Windows

If a port is already in use by some unknown program and when you try to use the same port , you get a lot of errors like "Port already in use" , "Bind Exception" , "Port 80 already in use" etc. So in such case, You have to find out which process is already using this port and you can kill that process.

Steps to find which application is using a TCP port in Windows

1. Type the command to find the Process ID
Go to Run -> cmd and Type


 netstat -ano | more 

Installing TFTP Server on Ubuntu

TFTP Server is usefull for PXE booting or configuring automatic back up of Cisco routers and Switches etc. Installing TFTP Server can be done in a few steps :

We are going install TFTP Server on a machine running Ubuntu ( version 10.04 32 bit Desktop Edition).

Steps to Install and Configure TFTP Server on Ubuntu

1. Step 1: Install TFTP Server
Either you can install using command line or Go to Ubuntu Software center. In command line type"sudo apt-get install tftpd-hpa" Or Search for tftpd-hpa in Software Center and click install