smaye
join:2005-12-11
Hendersonville, TN
| reply to just4info
Re: [Equipment] Rewired- No VOIP Phones!
I will tell you up front what I know of networking I learned on the streets. And I guess I did not spend enough time ont he streets 
I am absolutely open to being corrected, but let me tell you what I have learned (I think).
There needs to be one router that assigns the IP addresses. if you connect another router to it they must be configured as a switch or hub. In my old setup my WRT54G handled all the IP addresses. The BEFSR41 had DHCP switched off, so it performed as a switch. All this worked OK. The modem in the old system was a plain cable modem.
The new system has the cable modem acting as a router as well. It has wireless and a DHCP server built in. If I use this to issue IP addresses I can also use the wireless feature. If I use one of the linksys routers to issue IP addresses I must shutoff DHCP on the SBG900.
Guys- I know I don't know much about networking, but want to learn. Problems like this is where I learn the most.
Thanks. |
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just4info
join:2001-11-13
Rockville, MD
| You're pretty much correct. Since you want to use the 2nd router as a switch (and you've correctly turned off the dhcp server on the 2nd), you'd need to plug all your RJ45 cables (including the one between the cable modem, which is also a router as you said, and the linksys router in the LAN ports on linksys router. That will truly make the linksys router work as a switch.
It is not clear from you drawing you've done that. That is, do not use the WAN port on the linksys router. And, it should solve your problem. |
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smaye
join:2005-12-11
Hendersonville, TN
| Sorry, I did not mention it. Yes, I do have a straight thru ethernet cable connected to a lan port (WAN is not used) on the linksys router and then over to the SBG900.
One question about a UPLINK port. What can this be used for ? It has a switch that appears to allow it to connect like the rest of the lan ports or as a crossover.
I am getting the feeling I am doing most everything right, but the issue is getting the SBG900 gateway configured correctly. From reading on the internet many other suffer the same fate with this modem. I may have to give it up and go back to what I had. |
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just4info
join:2001-11-13
Rockville, MD
| Try to disable the firewall on SBG900 first and see it that works. If it does, the problem would be that you need to setup port forwarding for SIP (port 5060) protocol.
As for UPLINk, it's typically used for connection to another switch (cascading). In the past, cascading requires a cross-over cable. With a dedicated uplink port, a straight-through cable is good enough. Also, nowadays, most switches can do auto-sensing and rarely a cross-over is needed. |
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smaye
join:2005-12-11
Hendersonville, TN
| Thanks for the info. I have found the firewall blocked most things. Once disabled many worked, but the VOIP was still no change.
I have also tried setting port forwarding exactly the same as I did successfully on the Linksys router. I think i am going to have to hang it up and go back to my previous setup. |
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