2700HGV and Fritzbox

FritzBox · May 01, 2011, 19:02:32

I have just spent the best part of £320 on Fritz Box kit, the 7390 router, the matching VOIP phone and Friday I ordered the dual band wireless N dongle. I'm now beginning to wonder why. It is a great router with some great features ie two usb ports, one for printer and one for NAS, VOIP and the ability to attach DECT phones.
Now the two major drawbacks for me, you can't set the DNS servers manually, I like to use OpenDNS as we accommodate students and they have a penchant for file sharing sites, and also to keep my grand-daughter away from obvious nasties, contacted the manufacturers about this and they say it's because it's a security risk. I would say users accessing file sharing sites is more of a security risk personally. The other reason is, I get two or three disconnections a night, one of my networked machines needs to be connected 24/7, if I get disconnections it needs to be rebooted.

Anyhow this afternoon I had the idea of using a 2700hgv as a modem as they are rock solid on my line and thought I'd have a go at setting it up, so I got out one of my hubs running some form of BTv6 firmware and flashed it with the QWest firmware. Anyhow it totally screwed the Fritzbox, had to reflash it with the recovery firmware lol because I couldn't get back into it.
I have now stuck on my trusty 2700 with Singtel firmware which will stay on until I can discover how to get the two to work in tandem
I like to use certain IP addies on my network ie 192.168.240.125 for router and 192.168.240.130 onwards for devices, most of the devices ip's I set manually on the actual device.

Anyhow here is the questions(lot of waffle I know) if I stick the 2700 with Singtel into bridge mode through MDC-Configure Services it apparently defaults to the IP of 192.168.1.254 I'd like this to handle my ISP connection and the manual DNS setting
So what sort of IP setting would I need on the Fritzbox for it to handle everything else, including DHCP, wireless etc? Would 192.168.2.254 do the trick? Settings wise would it be PPPoE? Do you need to connect the two with a crossover cable?

Steve · May 01, 2011, 20:22:34

Sorry not got a 2wire but I think you need it to pass the wan IP onto the FritzBox if it will? i.e a PPPOA/PPPOE bridge the 2wire then acts purely as a modem it's IP is irrelevant. The Fritzboz is then router, and the connection is via PPPOE

We've a few 2wire experts so hopefully you'll get a definitive answer.

FritzBox · May 01, 2011, 20:33:52

Quote from: Steve on May 01, 2011, 20:22:34
Sorry not got a 2wire but I think you need it to pass the wan IP onto the FritzBox if it will? i.e a PPPOA/PPPOE bridge the 2wire then acts purely as a modem it's IP is irrelevant. The Fritzboz is then router, and the connection is via PPPOE

We've a few 2wire experts so hopefully you'll get a definitive answer.

I'm reasonably well clued up on the 2700 myself Steve, but this is something I've never tried before and as stated in my post I made a total hash of it first time round. Not sure about the IP being totally irrelevent as I will need some way of accessing the 7390. I'm now wondering how this will affect the VOIP and my Sipgate account?
The 7390 because of the disconnections has cost me at least 1400kbits of sync compared to the 2700 with Singtel and I'm on an interleaved connection not fast path
Thanks for your reply though, we await a definitive answer

Rik · May 02, 2011, 08:20:20

Welcome to the forum.

Above my skills, I'm afraid, but one of our experts should be along shortly.

FritzBox · May 02, 2011, 08:31:26

Quote from: Rik on May 02, 2011, 08:20:20
Welcome to the forum. Above my skills, I'm afraid, but one of our experts should be along shortly.

Many thanks Rik, looks like a very handy forum

MisterW · May 02, 2011, 08:32:35

QuoteSo what sort of IP setting would I need on the Fritzbox for it to handle everything else, including DHCP, wireless etc? Would 192.168.2.254 do the trick? Settings wise would it be PPPoE? Do you need to connect the two with a crossover cable?

You need to set the Fritzbox LAN subnet to something other than 192.168.1.x so your 192.168.2.x should be fine. This should allow any access to 192.168.1.x to be routed through the WAN port of the Fritzbox and thus allow you to access the 2700 configuration interface if you need to.
I believe settings on the Fritzbox should be PPPoe but I've never used a 2700 in bridge mode so not certain.
Any type of cable should be ok , the ports on the 2700 are auto-sensing.
I would also turn off the wireless on the 2700, its not disabled by default in bridge mode but its effectively useless, and will just get in the way of the Fritzbox wireless.

Rik · May 02, 2011, 08:34:30

Thanks, Colin.

MisterW · May 02, 2011, 08:39:32

Rik,
Colin ?? its Ian

Rik · May 02, 2011, 08:40:33

Sorry, brain not in gear.

MisterW · May 02, 2011, 08:41:30

'sok its still early (ish)

Rik · May 02, 2011, 08:42:13

For me, very.

MisterW · May 02, 2011, 08:55:11

QuoteI like to use certain IP addies on my network ie 192.168.240.125 for router and 192.168.240.130 onwards for devices, most of the devices ip's I set manually on the actual device.

Just noticed that in your original post. In that case you'll need to set 192.168.240.x as the LAN subnet on the Fritzbox.

FritzBox · May 02, 2011, 09:08:14

Quote from: MisterW on May 02, 2011, 08:55:11
Just noticed that in your original post. In that case you'll need to set 192.168.240.x as the LAN subnet on the Fritzbox.

That's not really set in stone, just makes it easier when setting the IP's on pc's etc, you dont have to use mousey
I might try the 192.168.2.254 just to make it easy. PPPoE would make sense.
Do you think doing it this way, will affect the VOIP on 7390, maybe have to do some port forwarding?

Just the one more question really "Does it have to be a crossover cable to connect the two?"

MisterW · May 02, 2011, 09:12:35

Both crossover and normal patch cable should be ok , the ports on the 2700 are auto-sensing.
It shouldn't affect the voip, when in bridge mode the 2700 will pass the public IP straight through to the Fritzbox so as far as voip is concerned it shouldn't be any different. I assume that since its designed as a voip router its got automatic port forwarding for SIP via an onboard SIP ALG ( Application Layer Gateway )

FritzBox · May 02, 2011, 09:21:14

Quote from: MisterW on May 02, 2011, 09:12:35
SIP via an onboard SIP ALG ( Application Layer Gateway )

Now your losing me lol. It's the first time I have messed with VOIP so don't really know much about it. Must say tho, I am very impressed with the call quality

MisterW · May 02, 2011, 10:20:10

Basically voip using the sip protocol has a problem where the endpoint(phone) is behind a NAT router, as is the case in most home networks. Various methods such as an Outbound Proxy, STUN and port forwarding can be used to assist the sip packets in traversing the NAT firewall in the router and getting to the correct device. A voip router usually has an inbuilt ALG which does all this automatically http://en.wikipedia.org/wiki/Application-level_gateway

MisterW · May 02, 2011, 10:26:44

BTW this http://blog.marc-seeger.de/2009/07/04/change-dns-servers-to-opendns-on-the-fritzbox-7240 might help you with the DNS settings on the Fritzbox. Doesn't look simple though...

Ardua · May 02, 2011, 12:20:50

Hi. I also have a Fritz!Box 7390 which has also suffered from random disconnections (mostly during the day in my case) - but nothing different to 2 new Netgear routers.

I have picked up a lot of useful information from the Whirlpool.au Internode site as they are pushing the Fritz!Box very hard as an all-in-one solution. They are references to coupling the Fritz!Box to another ADSL modem which might be of interest to you. There is also a Beta firmware update for the 7390 which quote includes a new ADSL pump unquote. Re this update, I am sitting on my hands for the moment as after a stern talking to (and nothing else) my box has held a solid connection with a downstream SNR of 7 for the past 5 days. There is also a Fritz!Box diagnostics tool that you can run which produces a TXT file to send to AVM.

Ardua · May 02, 2011, 12:31:53

Quote from: FritzBox on May 01, 2011, 19:02:32

Now the two major drawbacks for me, you can't set the DNS servers manually, I like to use OpenDNS as we accommodate students and they have a penchant for file sharing sites, and also to keep my grand-daughter away from obvious nasties, contacted the manufacturers about this and they say it's because it's a security risk. I would say users accessing file sharing sites is more of a security risk personally. The other reason is, I get two or three disconnections a night, one of my networked machines needs to be connected 24/7, if I get disconnections it needs to be rebooted.

A

Just found this on another forum re the 7390.

it is possible to change your DNS settings. All you have to do is Telnet your router and modify the ar7.cfg file. You will first have to enable Telnet. I have successfully changed my DNS to OpenDNS. No problem!

OR Change/set the DNS on your NIC instead. Then you can check the DNS using an app from this site.

http://www.grc.com/dns/benchmark.htm

You will probably understand more about this than I do. Reading on it suggests that using Telnet (which AVM do not like) will leave a semi-permanent message which can only be removed with use of the recovery tool.

Ardua · May 02, 2011, 13:49:12

And more on other forums re TelNet and DNS and the 7390 but note the warning:

Actually..

Fritz!Box web password:

BusyBox v1.8.2 (2010-07-08 13:23:44 CEST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

ermittle die aktuelle TTY
tty is "/dev/pts/0"
Console Ausgaben auf dieses Terminal umgelenkt
#

This is on the 7390 I just got yesterday.

Using the phone, you can dial #96*7* to enable telnet and #96*8* to disable it.

The first time I connected it didn't seem to accept any password, I then closed the telnet client and reopened it and it then asked me for my web password.

http://www.64k-tec.de/2010/01/fritzb...cess-over-ssh/

had more information and I'm slowly going through that now :-)

(Oh, and something to note - Unless you know what you are doing don't try this at home as it is entirely possible you may destroy your fritz box - Some of the instructions at the website there are quite wrong. But it is useful as a pointer.)

FritzBox · May 02, 2011, 15:09:56

I've had a go at the telnet thing, couldn't get it to work. Enabling telnet also flags your router up to AVM as to having the firmware changed and no support is forthcoming, not that they are that keen on support anyhow. I had more support before I bought the bloody thing surprisingly

Changing the DNS on the pc network card is not an option as I can't really say to our students "Can I have access to your pc so I can change some settings to make sure you can't use my connection as your own file sharing server"

Anyhow so far I'm struggling with this 2700 modem-7390 router thingy

You in the UK Ardua?

MisterW · May 02, 2011, 15:24:51

I believe you can change the Fritzbox configuration file by exporting it , editing and then reimporting.
or by using FBeditor See the link here http://www.ip-phone-forum.de/archive/index.php/t-227260.html

QuoteNote: You can also use the Export function of the Fritzbox and save the configuration to a file and then edit with a editor such as Notepad++ - If you do this add "NoCheck = yes;" just above the line "**** CFGFILE:ar7.cfg". After editing restore the file via the web gui.

FritzBox · May 02, 2011, 16:10:06

Quote from: MisterW on May 02, 2011, 15:24:51
I believe you can change the Fritzbox configuration file by exporting it , editing and then reimporting.
or by using FBeditor See the link here http://www.ip-phone-forum.de/archive/index.php/t-227260.html

I did try that as well, no joy MisterW, but I will keep that in the locker, so many thanks

jameshurrell · May 02, 2011, 16:30:00

I have no experience of the 2700/Fritzbox combo, but I do run 2x 2700 as ADSL modems in front of a Draytek 2910 2 port WAN router. As others have said, put the 2700 into bridge mode (there are instructions via Google on doing that), then in the Fritzbox you need to set up your connection to use PPPoE. In the Draytek this is as simple is choosing PPPoE and inputting the IDNet username and password - the only other option I change is the WAN static/DHCP IP address: although IDNet give you a static WAN IP address, on the Draytek, I use the DHCP option... this works fine...

Connect the 2700 and the Fritzbox using an ethernet cable, any port will do on the 2700.

Regarding local LAN IP addresses for the Fritzbox and local machines, use whatever you want - just make sure (as MisterW) stated that they are not in the 192.168.1.x range as this is what the 2700 will default to, and best to avoid any potential conflict.

Turn off wireless on the 2700 as others have said too as it serves no useful purpose except for accessing the 2700 config, but this is better done via an ethernet cable. The only time you'll need to access the 2700 is to check line stats as it serves no other purpose whatsoever. To do so, connect your machine directly to the 2700 using an ethernet cable (any port) and manually set its IP config to be in line with the 2700 - say 192.168.1.10, then browse to 192.168.1.254 to access the 2700s web config.

All that you are doing here is using the 2700 as a pure ADSL modem, everything is passed through to the Fritzbox (or whatever). No need to forward ports from 2700 to Fritzbox (not that you can) or anything like that... forget the 2700 exists - as far as you're concerned EVERYTHING is configured on the Fritzbox (DNS, VOIP, port forwarding to lan devices, local DHCP etc..)...

Hope that's of some use.

FritzBox · May 02, 2011, 19:23:27

Thanks for the comprehensive reply James. I have actually got it up running now, what a pain in the butt
Here's how it works

2700 running the QWest firmware(couldn't find a bridge mode on that) so basically switched everything off, wireless, dhcp etc
2700 ip is 192.168.241.125
7390 ip is 192.168.240.125

The VOIP was a pain in the but to get running again, but did lots of port forwarding from the 2700 and it seems ok now
Will attach settings of the 7390
Even though the 7390 is set to DHCP it doesn't seem to issue any IP's for wireless and my lappie I have set with a manual IP, in fact I've pretty much set everything with a manual IP. Trouble is my HTC doesn't seem to want to connect, so anyone got any ideas on the wireless?
OpenDNS also now works, why those clowns at AVM can't enable manual DNS setting I really don't know