I am trying to configure nagios check_bgp_neighbors plug-in on Ubuntu and followed README file of check_bgp_neighbors plug-in. I have made following changes:

define command{
    command_name    check_bgp_all
    command_line    $USER1$/check_bgp_neighbors -H $HOSTADDRESS$ -C $USER3$ -n $ARG1$ -n $ARG2$
    } 

to

define command{
        command_name    check_bgp_all
        command_line    /usr/local/nagios/libexec/check_bgp_neighbors.sh -H xx.xx.xx.49 -C xx.xx.xx.50

And

define service{
    use             server-service
    hostgroup_name          svc-bgp1
    service_description     BGP Check 1
    check_command           check_bgp_all!10.0.0.1!172.16.0.2
    }

to

define service{
        use                             generic-service
        hostgroup_name                  svc-bgp1
        service_description             BGP Check 1
        check_command                   check_bgp_all!xx.xx.xx.50
        }

xx.xx.xx.49 is the IP of the host router and xx.xx.xx.50 is the IP of eBGP neighbour.

After that it shows critical status. I know my command is not correct but cannot detect the problem. I learned that in this plug-in user-name and password of the host router are required but don't know how and where to provide it. Nagios log does not show any error message.

Status information: Failed: status:0 prefixes:0 sent:0 received:0