Discovery - ping results not correct

[pcexhaust]

When I run a discovery it doesn't detect a host that I know is pingable. Below, see the debug of findhosts.php which doesn't see 10.100.1.1 and the ping command which does. Any idea why this is happening and how I can fix it?

Note: When I do run findhosts.php, it does see some devices as pingable. It just doesn't catch all of them (like 10.100.1.1).

Code: Select all

[root@localhost ~]# cd /var/www/cacti/plugins/discovery/
[root@localhost discovery]# php findhosts.php -d -f
Checking to determine if it's time to run.
Checking if user changed the start time
The next run time has been determined to be at
   2010-08-04 6:00:03
Scanning has been forced
Setting 'Rerun Data Queries' = true
Setting 'Create Graphs for Up Interfaces Only' = false
08/04/2010 05:06:32 AM - POLLER: Poller[0] Network Discover is now running
Rerunning Data Queries on Existing Hosts
  Host : Localhost
    Creating Graphs
Primary Community Name    : public
Secondary Community Names : 
Calculating Info for Subnet :10.100.1.0/24
Start IP is 10.100.1.1
Total IPs is 254
10.100.1.1 - Does not repond to ping!
10.100.1.2 - Does not repond to ping!
10.100.1.3 - Does not repond to ping!
10.100.1.4 [I killed the task as this point]
[root@localhost discovery]# ping 10.100.1.1
PING 10.100.1.1 (10.100.1.1) 56(84) bytes of data.
64 bytes from 10.100.1.1: icmp_seq=1 ttl=255 time=2.04 ms
64 bytes from 10.100.1.1: icmp_seq=2 ttl=255 time=1.42 ms

--- 10.100.1.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1477ms
rtt min/avg/max/mdev = 1.426/1.735/2.045/0.312 ms
[root@localhost discovery]# 

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[TheWitness]

You need to provide better information. Here are base information:

1) Cacti Version
2) Discovery Version
3) Default Availability Method (Console->Settings) and Settings.

TheWitness