Switched Rack PDU AP7921

May 28, 2008

I have a Switched Rack PDU AP7921 in use and it was working now for several months without any problems. But sice yesterday I have a problem with the network connection. I was not able to connect to the PDU anymore, after pressing the reboot button it was working again. But after a few minutes, the problem appeared again.

Is this a common problem of this APC PDUs? Is there a fix, for example a firmware upgrade or is it broken?

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APC - AP7930 Switched Rack PDU

Mar 29, 2009

Have an issue that I am dealing with, APC support couldn't really help me get anywhere either.

Here is the story:

I am leasing a rack at Equinix in Sunnyvale.

It came with 3 APC Switched rack PDUs.

By the looks of it, they were used by the previous customer.

APC sent me a serial to RJ11 programming cable, and I have been trying to use HyperTerminal, but I get a blank screen when I attempt to connect.

I have tried arp commands, but, again, it looks like the device was previously configured.

I downloaded this: [url] hyper terminal software.

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I have a working PHP on the server, it is enabled and the sites are working. However they are not synced with the plan. If I try to sync it it shows:

PropertySubscription valuePlan valueAvailable valueAffected sites PHP supportswitched off switched onswitched off mydomain.com

Now how do I change the available value to be switched on?

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I've never worked with PDUs before.. just cheap power strips and a call to the datacenter

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> dig auringostaitaan.fi @5.9.57.170 soa +short
robotns3.second-ns.com. torsten.ruger.gmail.com. 0 10800 3600 604800 10800

You can see the test here [URL] .... when you enter the domain auringostaitaan.fi

In trying to fix this i have switched the dns off,changed the mode, enabled RIPE, but i get what it says [URL] ....

Note: See the sample of SOA serial number generated with the selected format. If the resulting number is less, than the current zone number, the modification may cause temporary malfunction of DNS for this domain. Zone updates may be invisible to Internet users for some time.

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Plesk 12.0.18, Windows Server 2008 R2 SP1.

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May 5, 2015

I have recently started using the slave DNS manager in the Plesk extension library. I've found that even for DNS zones that are switched off in Plesk, failed sync/transfers still try to take place between the slave and master. Why is this so?

Shouldn't turning the DNS functionality off in Plesk remove the zone from the slave DNS server?

When a domains DNS functionality is turned off, it removed the zone info from the master, but no command is issued to remove it from the slave??

Domain that is trying to sync/transfer: example.com
Plesk/Master server: 111.11.11.111
Slave DNS: 222.222.22.222

Code:
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: refresh: unexpected rcode (REFUSED) from master 111.11.11.111#53 (source 0.0.0.0#0)
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: Transfer started.
May 6 08:51:40 ns2 named[1178]: transfer of 'example.com/IN' from 111.11.11.111#53: connected using 222.222.22.222#53166

[Code] ...

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