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Zyxel router: reset to switch


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#1 Mac29

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Posted 16 April 2018 - 05:21 PM

Hey I'm trying to reconfig this Zyxel C1100Z as a switch for our home network. Got most of the settings but need a little help. 1) I don't find how to change the IP for this device to 192.168.0.2. Will this happen automatically b/c I turned off DHCP on the Zyxel? Meaning the main router will give it an IP?

 

2) Where in Firewall settings do I set "filter multicast" and "firewall protect". Maybe they're referred to differently in this menu.

 

I don't want to use the switch forever, just sometimes. So I don't want to change settings inside pcs or laptops.

 

Thanks in advance for any assistance,

Mac



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#2 Orecomm

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Posted 19 April 2018 - 09:38 PM

If your Zyxel is currently using some address not in the 192.168.0.x range then make a label with the address of the router on it and stick it on the bottom of the router so you can find it later. Then turn off DHCP in the router. Make sure you don't connect the WAN port and you can use the LAN ports as a switch. WiFi operation, if the Zyxel supports it, may or may not work depending on the internal circuitry. To get back into the Zyxel as a router you will need to manually address a computer to the subnet the Zyxel currently supports (say, 192.168.1.x if the Zyxel is 192.168.1.1) and connect it to a LAN port to access the web interface, turn DHCP back on, and connect the WAN port.



#3 Mac29

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Posted Yesterday, 09:30 AM

Orecomm, thanks. Got it working as a switch. Repurposing is good. Just a quick question or two: If DHCP is off then it shouldn't matter if I left NAT on, correct? It's just a dumb switch now.

 

Also, I think you're saying to get back in and reconfig as a router I'd need to temporarily set a pc's IP as static, but w/in the range the Zyxel 'supports'. But if DHCP is off it doesn't support anything. I'd have to turn on DHCP and set an IP, SM and default gateway. To do so w/the web interface I'd obviously just use the IP I stuck on the Zyxel.

 

Hey but let me ask you this: as far as firewalls on the Zyxel, would it be useful to leave "filter multicast" running? I'd seen some other tips that say turn off all except that setting. Also they say to kill remote admin and port 8080.

 

 

Thanks very much for you help,

 

Mac






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