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[Cable] Trying to use a gigabit switch with DCM475 modem directl

Re: [Cable] Trying to use a gigabit switch with DCM475 modem dir

i rebooted the modem with only 2 computers connected to the switch and finally got both computers connected. i have different IPs for each computer. one ends in 18 the other ends in 14, both are public. (rest of numbers are the same) whats the reason for a cable modem being different in terms of IP's. my Speedtouch gives local IP (192.168.xxx.xxx)to all devices connected to the modem, except one computer (if setup like that). I can use my gigabit switch on the DSL modem :/

either that, or i guess I have to wait until IPV6 is more widely adopted .

reply to nfsc
As Sunfox stated, consumer ISPs usually only provide one external IP per customer. If you're lucky you might get two. Because of this, to use multiple devices you need routers that use NAT routing to have multiple devices using a single external IP. Using a switch doesn't work because you don't have enough IP addresses for all your stuff.

It's not a "limiter." It's just what it is, a limitation of the technology. There aren't enough IPv4 addresses to give one to every single internet-connected device in the world.

reply to nfsc
Your Speedtouch isn't a simple modem. It includes a router inside, hence why it has a DHCP server to assign internal IPs, and uses NAT routing.

reply to nfsc
You guys are just confusing him.

A cable modem detects computers via MAC address. Your switch even unmanaged would have a MAC address on it's network interfaces.

This is where the magical second computer is coming from.

In order to use a switch with a cable mode, and have multiple PC, you need to add # of PC + 1. In your case it would have to be Computers Allowed by Service Provider: 3 or more.

People say it's good...although AC tech isn't that mature yet. Most would rather get the RT-N66U. However since you plan on using more advanced features, you might consider a MicroTik router. I haven't used one personally but I hear they're excellent.

reply to nfsc
Are you certain it has no MAC? Just because it isn't managed does not mean it doesn't have a MAC address. What model is the switch?

If it support STP, it is almost guaranteed to have a MAC.

reply to nfsc
Anyways, as for router, what features do you want/need?

There are soooo many out there.

reply to NeTwOrKDawg
its a Netgear GS108 Pro-Safe 8 port Gigabit switch.

As for router features, USB 3.0 would be nice, and being able to load Tomato or DD-WRT firmware onto it. Also want 450mbps at least, dual band. Everything else is pretty basic. But most importantly, i want reliability of course (who doesn't).

Those MicroTik routers...i can't find a reseller near by for them, (the Microtik RB2011UAS-2HnD-IN paired with the 5GHZ anntenna has caught my attention). My neighbors router causes troubles hogging up nearly all of the 2.4GHz band Q_Q, especially considering the guest SSID and the main SSID on one router are on two different channels. ): i have to manually set the channel on my DIR-655 just to get a stable connection, as the auto channel selection is completely useless and chooses channel 6 (hogged by other router) no matter what :|

Also, about the Asus RT-N66U, people are saying it runs hot, which worries me. Other than that, the N66U seems like my current option.

reply to nfsc
Why is there any confusion here? Connect the cable modem to the router's WAN port (it should be labelled as such on the router's physical body) via the provided ethernet cable, and nothing else. You can't plug your cable modem into a switch. As you've discovered, it won't work.
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Developer: Tomato/MLPPP, Linux/MLPPP, etc »fixppp.org

reply to nfsc

said by nfsc:

said by NeTwOrKDawg:

In order to use a switch with a cable mode, and have multiple PC, you need to add # of PC + 1. In your case it would have to be Computers Allowed by Service Provider: 3 or more.

like i said, the gigabit switch is transparent since its unmanaged. it has no mac address. i have not found a way to actually detect the switch through any means.

also, read my second post..i got the second computer connected

now i don't plan on keeping this troublesome setup, what router should i get. One that doesnt make your internet worst with all its features.

i have been eyeing the Asus RT-AC66U lately. Anyone have experience with this router?

reply to nfsc
It works for as many devices as the ISP has configured it to work for. In most cases that limit is one. In your case it seems the limit is two. Neither is a particularly useful number, and there's no good reason to do what you're doing.
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Developer: Tomato/MLPPP, Linux/MLPPP, etc »fixppp.org

reply to nfsc
I have a Cisco RVS4000 that I'm pretty happy with.

Behind that I have a Netgear 8 port prosafe gigbit switch that I'm pretty happy about. It has a lot of features and configures easily depending on what I want to do. Ive always had a good opinion of Netgear Prosafe products.

Attached to that I have a Linksys WAP610N that I'm not overly enthusiastic about but it works so w/e.

I'm pretty happy with the cisco rvs4000 as a router. It's never locked up on me. performs as expected. Has a couple of revisions of firmware that seem to fix/break different things depending on what you want to do hahaha. All kidding aside, I like it. My buddy bought one also and Ive never had to sort out any network issues for him.
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Opinions and ideas expressed in my post are my own and in no way represent those of Bell Canada Enterprises, Bell Canada, Bell TV, Bell Internet, Bell Mobility, Bell Technical Solutions, Expertech, or any other partners under the BCE umbrella.

reply to nitzguy
It was a great explanation nitzguy, but...

reply to Guspaz

reply to nfsc