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Re: HP SIM 5.3 Discovery shows IP number instead of name

 
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Occasional Contributor

HP SIM 5.3 Discovery shows IP number instead of name

Hello,

I have a question, when I manually discover servers by typing their hostname in the manual discovery job, but one of the servers is discovered by IP-address while the others are shown by hostname.
I have checked a few of the servers for diffrences but to me they look the same.
Why is one server returned by ip-address and the other by hostname?

Regards,

Aad
15 REPLIES 15
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Honored Contributor

Re: HP SIM 5.3 Discovery shows IP number instead of name

hi,

have you checked your dns entry for that server ?

hth

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Occasional Contributor

Re: HP SIM 5.3 Discovery shows IP number instead of name

Mark,

Thanks for youre reply.
Yes I have checked the DNS entries for all servers, and they are all equal. Just like the SNMP settings and informational settings in the OS like hostname.
In SIM I have changed the information of the server, so for now it is represented and found by hostname, but to me it is still a question why the IP-number is resolved.

Regards,
Aad
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Honored Contributor

Re: HP SIM 5.3 Discovery shows IP number instead of name

You can't just check the entries in DNS, you need to check forward and reverse resolution from your HP SIM central management server. The only way that HP SIM can resolve names is through DNS.
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Advisor

Re: HP SIM 5.3 Discovery shows IP number instead of name

Does that mean that SIM uses reverse DNS to find devices or resolve hostnames? Or just forward lookups?
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Honored Contributor

Re: HP SIM 5.3 Discovery shows IP number instead of name

It uses both to confirm the address. My understanding is that it cross checks the results.
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Advisor

Re: HP SIM 5.3 Discovery shows IP number instead of name

Oooh...good to know. I hadn't been setting up Reverse DNS entries for all of my devices.
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New Member

Re: HP SIM 5.3 Discovery shows IP number instead of name

can i bypass the cross check? it was working fine with just forward lookup. We have multiple AD domains. because of this i dont think getting reverse lookups to work will be an option.
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Honored Contributor

Re: HP SIM 5.3 Discovery shows IP number instead of name

I'm pretty sure that reverse DNS configuration is a requirement for proper operation of HP SIM and any of its plugins (VSE, etc...)


-- Rob
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Super Advisor

Re: HP SIM 5.3 Discovery shows IP number instead of name

i have a simaler situation, but mine have the serial number showing. they are also in a C7000 blade enclouser