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No web access on AP6931

APC UPS Data Center & Enterprise Solutions Forum

Schneider Electric support forum for our Data Center and Business Power UPS, UPS Accessories, Software, Services, and associated commercial products designed to share knowledge, installation, and configuration.

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fdelbene_apc
Ensign
Ensign
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14
1642

No web access on AP6931

This was originally posted on APC forums on 6/9/2015


Hello all.

I have a Smart-UPS X 1500 (SMX1500RMI2UNC) with management card AP6931.

The card seems correctly configured, and I can access it by serial and by telnet. It responds to pings too.

Unfortunately I'm not able to access the web interface, even if it is in Stat : P+ N+ A+ and the web command displays:

apc>web
E000: Success
Http: enabled
Https: enabled
Http Port:      80
Https Port:     443

It doesn't seems to be the SSL issue (I tried from both Firefox and IE -accepting down to SSL 2.0- with both HTTP and HTTPS). The error reported by the browsers is a generic "Unable to connect"/"This page can’t be displayed".

When I bought the switch I was able to access the card via the web interface until -I think- I modified something in the logs section and after that I wasn't able to access the card anymore. I did several resetToDef and reboot. I remember doing also a format (but not sure). Lastly I did a firmware upgrade to v6.2.1.

Any help? Thank you in advance.


Accepted Solutions
fdelbene_apc
Ensign
Ensign
0 Likes
0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/16/2015


Resolved by doing another format (pressing the reset button for 20 seconds), as instructed by APC Support.

See Answer In Context

14 Replies 14
voidstar_apc
Janeway
Janeway
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0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/9/2015


Does it show a blank page when you try to access it? If so, delete your cookies -- either all or specifically the ones for the NMC.
BillP
Administrator Administrator
Administrator
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0
1645

Re: No web access on AP6931

This reply was originally posted by Angela on APC forums on 6/9/2015


Are you accessing this from the same subnet or via a WAN link?

This issue came to mind -> http://www.apc.com/support/index?page=content&country=ITB〈=en&locale=en_US&id=FA235265 

fdelbene_apc
Ensign
Ensign
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0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/9/2015


On 6/9/2015 7:16 PM, voidstar said:

Does it show a blank page when you try to access it? If so, delete your cookies -- either all or specifically the ones for the NMC.

Yes, it shows a blank page with generic error "Unable to connect"/"This page can’t be displayed" as if there is no web server listening there.

I always set my browsers to clean up all files (including cookies) at every closure! 🙂

fdelbene_apc
Ensign
Ensign
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1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/9/2015


On 6/9/2015 9:20 PM, Angela said:

Are you accessing this from the same subnet or via a WAN link?

This issue came to mind -> http://www.apc.com/support/index?page=content&country=ITB〈=en&locale=en_US&id=FA235265 

Yes this seems exactly my issue, but I'm on the same subnet (I even tried attaching to the same switch just to be sure).

Tomorrow I'll try to set my MTU to 1300.

BillP
Administrator Administrator
Administrator
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1645

Re: No web access on AP6931

This reply was originally posted by Angela on APC forums on 6/9/2015


Okay, if that doesn't work I thought to check/verify proxy server settings but hopefully that is it. I'll wait to see your results and we can go from there with options cool

fdelbene_apc
Ensign
Ensign
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0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/10/2015


Unfortunately changing the MTU from 1500 to 1300 didn't resolve the issue.

Proxy is correct as I can access both internet and internal websites.

I also tried from three different PCs to exclude a problem on a specific workstation.

BillP
Administrator Administrator
Administrator
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0
1645

Re: No web access on AP6931

This reply was originally posted by Angela on APC forums on 6/10/2015


Hmm, what if you try a direct crossover connection, just for kicks? I know you already tried connecting to the same switch but I was just thinking maybe it is an issue like duplicate MAC or IP address on the network or something (though the event log on the NMC would likely report that if you can see the event log via Telnet).

We have instructions on doing a direct connection here, if you need it -> http://www.apc.com/support/index?page=content&country=ITB〈=en&locale=en_US&id=FA156366 

fdelbene_apc
Ensign
Ensign
0 Likes
0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/10/2015


As I said I can access the card by telnet and it responds to pings, so I think we are safe to exclude networking problems.

I tried to connect by ftp (with Filezilla), and it works too (even if strangely I'm not able to move files between the card and my PC, only to list/create/delete them).

Anyway I exported from the telnet console the attached logs.

Attachments
BillP
Administrator Administrator
Administrator
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1645

Re: No web access on AP6931

This reply was originally posted by Angela on APC forums on 6/10/2015


Well, we have that MTU issue as an example so I am just saying it might be worth a try tongue-out 

What you described with FTP sounds like an FTP data port being blocked by something, but we saw that same behavior with the MTU issue too.  When you changed your MTU to test, there is no chance it was for the wrong network interface accidentally, was there?

Everything in the logs looks okay too.

Did this ever work for you? I assume maybe you tried a different computer already and stuff?

fdelbene_apc
Ensign
Ensign
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0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/10/2015


I tried changing the MTU on another PC, but no luck.

Attached you'll find a screenshot that shows the MTU change and ping, telnet, ftp and http connections.

Tomorrow I'll try to find a crossover cable and directly connect to the card.

Attachments
fdelbene_apc
Ensign
Ensign
0 Likes
0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/11/2015


I tried with a crossover cable following the instructions linked, but it didn't change.

Another thing I noticed is that the Device IP Configuration Utility cannot find the card.

Attachments
voidstar_apc
Janeway
Janeway
0 Likes
0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/11/2015


At this point I would use wireshark to capture the traffic and see what's going on.

fdelbene_apc
Ensign
Ensign
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0
1645

Re: No web access on AP6931

This was originally posted on APC forums on 6/15/2015


Attached there are two wireshark captures: first one with MTU=1500, second one with MTU=1300.

Attachments
fdelbene_apc
Ensign
Ensign
0 Likes
0
1646

Re: No web access on AP6931

This was originally posted on APC forums on 6/16/2015


Resolved by doing another format (pressing the reset button for 20 seconds), as instructed by APC Support.