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тАО09-02-2009 01:16 AM
тАО09-02-2009 01:16 AM
it seems that our PCM Server 2.233 don┬┤t use the DNS.
The nslookup on the server is working well, and under "Preferences - Global-Device Access" the Device Display Name ist set to DNS.
But i only see the devices IP Adresses no Names were displayed.
So I have tried a "Rediscover" of the Devices - but without luck....
After that i have scanned the devices....but this failed too....
So is there anything that i can do, to get the devicenames displayed ?
Thanks
Ulli
Solved! Go to Solution.
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тАО09-02-2009 11:30 PM
тАО09-02-2009 11:30 PM
Re: PCM 2.233 and DNS...
I don't think the switch has done this registration, so PCM cannot resolve the name/adress using DNS.
Windows clients (unless older then W95/98) will register themselves in DNS.
Some other OS'es may also.
For other DHCP-clients you can configure an option on the DHCP server so the DHCP server registers the client if doesn't do this self.
Many other clients like switches with fixed ip-adresses you must register manually in DNS.
if you got many adresses to add you may try the windows resourcekit utility DNSCMD.exe
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тАО09-03-2009 03:43 AM
тАО09-03-2009 03:43 AM
Re: PCM 2.233 and DNS...
Yes, the switches will not register themselfes in DNS - so they are manually added in the DNS Server. I have checked the entries in this Server, and it seems, that all is OK. Only their names will not appear in PCM - this is a strange behaviour...
Thanks
Ulli
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тАО09-03-2009 03:52 AM
тАО09-03-2009 03:52 AM
SolutionSo you added the A-records for these switches
but is the DNS-server configured for reverse lookup for the switches namespace?
Check the PTR-records for reverse-lookup.
(when adding A-records in windows DNS you are asked if PTR record must be added).
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тАО09-03-2009 04:45 AM
тАО09-03-2009 04:45 AM
Re: PCM 2.233 and DNS...
In the DNS Servers Reverse Lookup Zones, there are a lot of entries missing!
Afer I manually added a entry, it works without problems....But the reason, why there are missing entries ....I have no idea.
Thank you for your assistance.
Ulli
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тАО09-03-2009 04:52 AM
тАО09-03-2009 04:52 AM
Re: PCM 2.233 and DNS...
When adding A-records you can choose to (or not) add PTR records at the same time.
I you don't add the ptr-records at this time, they will be added when you do a forward lookup.
This reverse lookup cache may have been manually flushed at a time or there may be a cache-timer?