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Three Dahua Bricks... Is There a Trick to UNBrick?
Well, I cancelled the order on the 24p. I'm still leaning toward the OMADA SDN feature (only because I have some of the pieces now), But that little NetGear above,is tempting IF it was on sale. To replace my failing switch would take a BUNCH of them. The good news is that my failing switch is... -
Three Dahua Bricks... Is There a Trick to UNBrick?
That's an impressive little switch, right there. Added to my list for future expansion in the shop which has a 4poe/4non switch right now. My comment re: fanless vs power was prompted by searching 16~24 port switches, it looked like all the poe versions and especially the high wattage units were... -
PoE Voltage Tester
A question about testing PoE: Yes, I have DVMs and of course I can make a quick connector to try to read voltage at an injector or switch, but since the voltage and current (depending on the particular PoE standard) relies on a software negotiation between devices, I'm certain that the DVM...- MrSurly
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- Replies: 5
- Forum: Networking
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Three Dahua Bricks... Is There a Trick to UNBrick?
Good points; For the record, I should add that the V7 switch, the 8-port switch in the shop as well as the computer room (CamPC/modem/router) each have dedicated UPSes/ surge protectors. This gives a little bit of run time during an outage and most importantly isolates everything from most... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Despite the appearance of my switch evidently becoming aware that its replacement is being arranged and now making a yeoman's effort to prove its mettle :haha: , I'm glad I did the testing. I was able to establish that the switch was NOT providing power to the cams and that this was the direct... -
Three Dahua Bricks... Is There a Trick to UNBrick?
It just keeps getting weirder; it was down to seven cams working this morning (one remains externally powered) and when I got back tonight,, … ALL FOURTEEN cams are working. Without my having dicked with any settings. -
Three Dahua Bricks... Is There a Trick to UNBrick?
Good points on redundancy, a few small vs one large. I'm giving that some investigation to compare cost, power budgets etc. Good call on the SDN compatibilty as I hadn't thought of the outdating possibility. It turns out that my Omada controller and both APs are "SDN Integrated" and fully... -
Three Dahua Bricks... Is There a Trick to UNBrick?
I'm looking REALLY hard at this one right now... high power, gigabit everywhere, i already have TPlink access points and an Omada controller (just a widget that could be useful) Take a quick look and tell me what I'm overlooking? there is a low-power version (SG2428P) -
Three Dahua Bricks... Is There a Trick to UNBrick?
Thats a good set of specs. That unit looks almost identical to the V7 I have. I'll check into warranty info on it. A co-worker tells me of the Zyxel switches he has, five year warranty that they do honor; he's impressed with their support so I'm including Zyxel in my search -
Three Dahua Bricks... Is There a Trick to UNBrick?
There is a lingering "but what about...' ONE of the 'bench' cams was the first to fail and it actually was running on the other (8port) switch in the shop....hmmmmm. The other two cams on that switch and the PTZ that replaced this cam are working fine. The PTZ is externally powered. Looks like... -
Three Dahua Bricks... Is There a Trick to UNBrick?
BOOM!! Mystery solved! Not resolved but at least I now know why my cameras acted like they shared a virus. All of your helpful ideas and actions eventually led me to the proof. The PSU in my V7 24PoE switch is dying. doing the arp cmd showed the ips of some non-op cams including those on the... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Yes, one of them (noname PTZ) is detected by Dahua's Configtool as .22.26 but picked up by BI as 22.78. When weird behavior happens, it happens to me first. -
Three Dahua Bricks... Is There a Trick to UNBrick?
Thanks, a good reference to have. I'm familiar with command line usage for pings, directory list, ipconfig... but not familiar with the 'arp' command. -
Three Dahua Bricks... Is There a Trick to UNBrick?
I haven't thought through this methodically enough. When I get home I will try another approach. since I can't see the camera with the web gui after using the web gui to change its IP, i need to first concentrate on that, Not Blue Iris. As spelled out in post #6 above, the process using the web... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Haven’t done that, not familiar. are you speaking in cisco? what is the actual command line entry? -
Three Dahua Bricks... Is There a Trick to UNBrick?
I just noticed an other bit of weird, that probably means absolutely nothing.... Of the working cams, one of them is not a Dahua, it's some no name PTZ that I've had on the shelf and only recently deployed after the aforementioned 'bench cams' went out. The cam works fine, no issue its just that... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Went and did it just now (two were on 80? the others were already there.) No change yet./ -
Three Dahua Bricks... Is There a Trick to UNBrick?
I can't see them in BI. See above. Once they went offline, the ONLY way I've been able to talk to them (referring to the two on the bench, specifically) has been to physically reset them and then I can see their streams in the web gui after changing the PW and before changing the ip. After... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Wait... you're speaking of the web GUI for the camera which I can't actually get to, once I change the IP. The only way I can get to any of these once they have stopped talking is to Physically reset them, then use the web gui to see them at 1.108, then I can change their password at which... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Of minor note: in Dahua Config tool, setting the PW in the search setting does nothing. If I have the right subnet range, it finds the working cams even with the wrong or NO password. Not sure if that's a win or a loss for config tool. If I set the 1.108 just to check, no cams appear.... just... -
Three Dahua Bricks... Is There a Trick to UNBrick?
Noted, I can sure try that. I want very much for the fix to be from the keyboard and NOT involve pulling cams down for bench time. -
Three Dahua Bricks... Is There a Trick to UNBrick?
I'm certainly open to every possibility, but I made no changes to logins anywhere and all the cams share the same login for almost two years, now. The PW is upper and lower alpha plus numeric plus an asterisk. -
Three Dahua Bricks... Is There a Trick to UNBrick?
I suspected a switch going out but there are two of them (8 and 24 port) and the outages are randomly dispersed. Switching physical ports at the switches made no difference. -
Three Dahua Bricks... Is There a Trick to UNBrick?
What is the significance (if any) of BI knowing the cams are there but not talking versus Config tool not knowing they are there? -
Three Dahua Bricks... Is There a Trick to UNBrick?
I have looked at so many settings and done so much help reading and forum searching.... I Truly hope you guys can see where I went off the rails. I just can't keep this up, it's like studying for a Psych final. -
Three Dahua Bricks... Is There a Trick to UNBrick?
Unfortunately, none of these can be seen by Find/inspect, it just times out. -
Three Dahua Bricks... Is There a Trick to UNBrick?
Note that BI (2nd panel above) SEES the cameras..... but the web interface cannot and Dahua Config cannot. The config list is the other eight working cams. The ips for the offline cams are .10 .16 .18 .20 .24 .25 -
Three Dahua Bricks... Is There a Trick to UNBrick?
And now, the same panels from two cams that just recently stopped communicating. These are NOT the two I was already were dealing with, these just quit a couple of days ago and I have made ZERO changes to them AFAIK -
Three Dahua Bricks... Is There a Trick to UNBrick?
Next are five screenshots each of panels from two cams that are working perfectly -
Three Dahua Bricks... Is There a Trick to UNBrick?
As is typical for my projects, it just keeps getting deeper. ++++++First, note that although yesterday I upgraded my CPU, that has NOTHING to do with my cam connection issues which were getting more involved before the CPU thing. The chip swap was simple and uneventful. ++++++++ Now, back to...