IP address ranges

[Mike Ng]

In the automatic discovery, I have this error.

"Warning, the number of addresses entered to ping exceeds the recommended amount. Number of addresses to ping: 5610 Recommended: 2000"

What should I do, What option do I have?
Thanks.

[Jens Schröder]

Hi Mike, you entered an IP range that lets the HP SIM generate 5610 possible IP-adresses to ping. You receive this warning, because contacting more then 2000 adresses causes a lot of network traffic and waiting time. 2000 is somewhat arbitrary but as a rule of thumb it is useful.
Imho you can go on with what you intended and just ignore the warning, if you are certain that no problems arise from pinging more than 5000 systems. Alternatively you can try to define the IP-ranges more precisely, i.e. splitting it up into several ip ranges. Third, a method that I recommend over the previous ones, don't use automatic system detection at all. Simply generate one or more hosts files, by which you import lists of knows hosts.

[Mike Ng]

Thanks, Jens.

I have tried the 3rd option previously without success. Would appreciate if you could give me a step-by-step guide. Many thanks.

[Jens Schröder · Accepted solution]

Ok, do the following:

1. Create a hosts file (simply a list of IP adresses and servernames):
# this is a comment
172.211.196.44 BLNSR00086
172.128.127.99 FIESR01000
...
For later identification it's recommendable to add a comment on top of the list.

2. Click on Options - Discorery - Manual Discovery and select the link host files there

3. Click "New", choose an arbitrary hosts file name (for display in the list), check the initialization option "Systems loaded from hosts file" and Browse... for the file created in (1.). The file content will be pasted into the "Contents" area below.

4. Click OK, so that the hosts file name will appear in the list on top of the page.

5. Select the file entry in the list and click "Add Systems Now".

That should do it.

[David Claypool]

Mike:

Also note that it is a WARNING, not an ERROR. It is just telling you that it may take an excessive amount of time to complete, but it does work.

--DC