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Forums » US Telco Support » AT&T » AT&T Midwest » Modem GUI w/ Router - ISO Definitive Answer
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Modem setup with Sonicwall TZ170 »
« 5100b setup  

BadtzMaru

join:2001-12-06
Cleveland, OH

Re: Modem GUI w/ Router - ISO Definitive Answer

Funniest thing. I followed gdm See Profile's advice. And it worked -- all this time, I'd been setting up my LAN to use 255.255.0.0 to try to get it to overlap with the subnet of my modem, which is actually attached to the WAN NIC of my router. How foolish! Setting the LAN subnet mask back to 255.255.255.0 did the trick. So, for anyone else who stumbles upon this, here's how everything needs to be set:

On the modem, all that needs to be changed from its defaults are the following items in Advanced>Connection Configuration page -- User ID and Password (of course), Connection Type: Connect on demand, and Connection Timeout: 0 [displayed as "Never"] -- the modem will need to be restarted after these changes:



On the router, use DHCP, IP address: 192.168.1.1 (although anything in 192.168.x.x should work), Subnet Mask: 255.255.255.0 (NOT 255.255.0.0).

gdm
Premium,MVM
join:2001-06-15
Mchenry, IL
clubs:

Re: Modem GUI w/ Router - ISO Definitive Answer

One thing under advanced---connection type set that to always attempt to connect on the modem.

BadtzMaru

join:2001-12-06
Cleveland, OH

Re: Modem GUI w/ Router - ISO Definitive Answer

Got it. Interestingly, I had to reboot my router to apply the change network-wide. What's the advantage of "Always attempt to connect" vs. "Connect on demand" with a zero timeout?

gdm
Premium,MVM
join:2001-06-15
Mchenry, IL
clubs:

Re: Modem GUI w/ Router - ISO Definitive Answer

always attempt to connect means it will be on 24/7 unless there is an outage, maintenance, etc.

Connect on demand means it will connect when you need the internet.

BadtzMaru

join:2001-12-06
Cleveland, OH

Re: Modem GUI w/ Router - ISO Definitive Answer

Seems like a fine line. On one hand, it will "always attempt to connect" regardless of what's going on on the inside, while on the other hand, it will attempt to connect (only) when it senses a packet directed to the outside world, and never disconnect. I guess the former is better if one's interested in obtaining an always on connection.

gdm
Premium,MVM
join:2001-06-15
Mchenry, IL
clubs:

Re: Modem GUI w/ Router - ISO Definitive Answer

Think of always attempt to connect like a bridge modem and having your router set to 'always attempt to connect'
Forums » US Telco Support » AT&T » AT&T MidwestModem setup with Sonicwall TZ170 »
« 5100b setup  


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