AP7900

Anonymous user · ‎2021-06-28

Is the 3.92 firmware not valid for AP7900? We've gone so far as to factory default on of the pdu's but the upgrade fails each time. If this is not valid where can the 3.74 firmware be found?

Thanks

Anonymous user · ‎2021-06-28

I'd like to mention I had similar issues with upgrades as OP. I have dozens of 79xx units, and the GUI tool never seemed to work, however it worked almost flawlessly with FTP.

That being said, I've been unable to get the units to use an SSH2 host key size other than 768 bits. As of OpenSSH 7.6, host keys smaller than 1024 bits are refused with no way to override it (https://www.openssh.com/txt/release-7.6).

I've tried using the WebUI to delete and regenerate the keys, and it only generates 768-bit keys (as it indicates it will).

I've also tried using the APC Network Management Card Security Wizard CLI Utility (https://www.apc.com/shop/us/en/products/APC-Network-Management-Card-Security-Wizard-CLI-Utility-v1-0...) to generate new SSH keys (both 1024 and 2048), and upload them via the WebUI, but it seems to eventually reject them and then generate a new 768-bit key.

Is there any way to get these units to use an SSH key length of at least 1024 bits?

See Answer In Context

BillP · ‎2021-06-28

Hi Rebekah,

Yes, there is an AOS 3.9.2/rpdu application 3.9.2 for AP7900. The file would be apc_hw02_aos392_rpdu392.exe that you would've downloaded.

Can you elaborate on the issue you're seeing? Is the firmware not upgrading properly? Just let me know what you've tried so far specifically and the current state the unit is in and we can hopefully figure this out.

Anonymous user · ‎2021-06-28

Loading OS, please wait ... Firmware download failed. This happens on multiple units. I've attached a screenshot.

Anonymous user · ‎2021-06-28

Sorry I didn't really answer all of your questions. We have approximately 10 of these units. We tried using the utility apc_hw02_aos392_rpdu392.exe and it always fails at the same point (see attachment to previous post). I believe 5 units were tried. At some point during troubleshooting, two of the units were factory defaulted. Seems to have made no difference. He also tried straight ftp on of the units. It is now accessible only by ftp and only shows the aos374.bin and I assume I need to find the rpdu374.bin to make that pdu accessible again.

Anonymous user · ‎2021-06-28

I'm halfway through and it's worked perfectly on every one I've tried. Thanks for your help.

BillP · ‎2021-06-28

Which one - the new AOS 3.9.2/rpdu 3.9.2 via FTP or putting the 3.7.4 back on?

Anonymous user · ‎2021-06-28

3.9.2

Anonymous user · ‎2021-06-28

On a separate note -- and please forgive me if I just haven't found that information in the forum yet -- but are there any known issues with the 3.9.2 firmware on the AP7801 hardware? After an upgrade, HTTP/HTTPS seems to be unavailable, and SSH is unreliable.

BillP · ‎2021-06-28

Hi Craig - no, there are no known issues like that which we are aware of. We'd have to check into specific details on what your AP7801 is exhibiting. The only thing that comes to mind is that that firmware still only supports TLS 1.0 so HTTPS access could be blocked by your web browser. Same with the SSH server being older and perhaps blocked by certain clients. We are releasing AP7801B which is the same PDU with an upgraded management interface. For existing customers like yourself, we are trying to make TLS1.1 and 1.2 work on the existing hardware but it is not as easy as it sounds with the older management interface. Same with modifying SSH and which cipher suites it supports.

Lastly, depending on how you have things configured and what other protocols your running with these two (SNMPv3 for example), things could get a bit slow in general.

Anonymous user · ‎2021-06-28

Hi Angela!

I am looking for the firmware.

Can you direct me where I can download it?

Please let me know.

BillP · ‎2021-06-28

Hi,

If the unit is a AP7900 the latest firmware is available at this link. https://www.apc.com/shop/us/en/products/Switched-Metered-Rack-Power-Distribution-Unit-Firmware-Revis...

Anonymous user · ‎2021-06-28

I'd like to mention I had similar issues with upgrades as OP. I have dozens of 79xx units, and the GUI tool never seemed to work, however it worked almost flawlessly with FTP.

That being said, I've been unable to get the units to use an SSH2 host key size other than 768 bits. As of OpenSSH 7.6, host keys smaller than 1024 bits are refused with no way to override it (https://www.openssh.com/txt/release-7.6).

I've tried using the WebUI to delete and regenerate the keys, and it only generates 768-bit keys (as it indicates it will).

I've also tried using the APC Network Management Card Security Wizard CLI Utility (https://www.apc.com/shop/us/en/products/APC-Network-Management-Card-Security-Wizard-CLI-Utility-v1-0...) to generate new SSH keys (both 1024 and 2048), and upload them via the WebUI, but it seems to eventually reject them and then generate a new 768-bit key.

Is there any way to get these units to use an SSH key length of at least 1024 bits?

ScabberMatt · ‎2025-01-14

I am having this same issue with my AP7900 and upgrading to 3.9.4 from 3.7.4
if these forums didn't look like swiss cheese I could probably figure out a solution myself.

the 3.9.4 updater only fails
I get the "Loading OS, please wait ... Firmware download failed."

I have tried disabling services and re-enabling and restoring defaults nothing seems to change this. When I connect to FTP the connection is unstable and drops or indicates the Administrator user (now defaulted to APC) only has read access.

AP7900

AP7900

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