Issue connecting to cameras without a router
- Thread starter SaeedKY
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A Layer 2 Ethernet switch uses Layer 2 MAC addresses to make forwarding decisions. It is completely unaware of the data (protocol) being carried in the data portion of the frame, such as an IP packet
When you change ISP's or routers, Your physical device port MAC addresses change.
Local LAN addresses pool could also change. i.e. 192.168.0.1 @ 00:1A:2B:3C:4D:5E to 192.168.1.1 @ 04:7A:2B:3C:4D:9E , making your cameras unroutable " unfindable" on the network.
I used a router off line so the DHCP server within could talk to Blue Iris and send the camera streams to the PC.
The traffic doesn't have to " go thru" the router.
The router port just has to be attached to a switch port to manage IP addresses and the MAC address Table.
Any body who wants to make their life miserable and create a network manually is free to do so....
there's just no reason for it.
When you change ISP's or routers, Your physical device port MAC addresses change.
Local LAN addresses pool could also change. i.e. 192.168.0.1 @ 00:1A:2B:3C:4D:5E to 192.168.1.1 @ 04:7A:2B:3C:4D:9E , making your cameras unroutable " unfindable" on the network.
I used a router off line so the DHCP server within could talk to Blue Iris and send the camera streams to the PC.
The traffic doesn't have to " go thru" the router.
The router port just has to be attached to a switch port to manage IP addresses and the MAC address Table.
Any body who wants to make their life miserable and create a network manually is free to do so....
there's just no reason for it.
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The MAC Address Table (7.3) > Ethernet Switching | Cisco Press
<p>In this sample chapter from <em> Introduction to Networks Companion Guide</em> (CCNAv7) for Cisco Networking Academy students, you will review available switching forwarding methods and port settings on Layer 2 switch ports.</p>
www.ciscopress.com
ron351
Getting the hang of it
- Jul 24, 2017
- 121
- 51
Ok guess it threw mw where you said all your devices are wireless in your 3rd post
No, I did not connect anything to the new router when I swapped it in. All my devices are wireless. So, the router is just connected to the modem.
As for the POE switch. Those cables did not change (camera cables coming into it and one cable coming from it to the PC)
If the CCTV network and all of it's devices are on a isolated network with only a POE switch in between and there were no changes made to the system between when it was working fine and now when it wouldn't work at all, then I would point to the switch having gone bad. That being said, if anything else was changed - BI updated, new devices added or removed, static addresses modified, etc, etc, etc, then it is very likely it is not the switch at all.
Luckily this should be pretty easy to diagnose using basic network tools like "Ping". You should connect/set up your computer's network interface with a static address in the CCTV subnet and then use it to ping the various network devices like your switch and your individual cameras to see what you can/cannot communicate with. If you can't ping anything (and you know the computer's network static network is set correctly) then that points to a switch failure. If you can ping the switch, but not other devices connected to the switch, then that points to a switch setting being wrong. You can test this theory by connecting the computer directly to the cameras individually. If you can communicate with the cameras this way, that confirms there is an issue with the switch. If on the other hand, you can ping all of the devices (switch and cameras, etc) when you connect the computer to the switch, then the "problem" isn't a network issue and it is a likely a software configuration issue with BI.
Luckily this should be pretty easy to diagnose using basic network tools like "Ping". You should connect/set up your computer's network interface with a static address in the CCTV subnet and then use it to ping the various network devices like your switch and your individual cameras to see what you can/cannot communicate with. If you can't ping anything (and you know the computer's network static network is set correctly) then that points to a switch failure. If you can ping the switch, but not other devices connected to the switch, then that points to a switch setting being wrong. You can test this theory by connecting the computer directly to the cameras individually. If you can communicate with the cameras this way, that confirms there is an issue with the switch. If on the other hand, you can ping all of the devices (switch and cameras, etc) when you connect the computer to the switch, then the "problem" isn't a network issue and it is a likely a software configuration issue with BI.
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