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531 posts

Ultimate Geek
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Topic # 115480 26-Mar-2013 21:00
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Hi,

Have an interesting one here.

Was just onsite with a client who has one of the new PACE V5542 modems from Telecom/Xtra. Looks like it will handle all connections types a la Fritzbox and seems to have a good wireless modem. Interface isn't bad.

Background:

This is a brand new building and cabling, client has just purchased three new PCs/Laptops.
Client runs Line of Business app that is based around MS SQL Express, running from one of the machines which has a static IP (192.168.1.100)

But......

When plugged into the Pace modem the ODBC connection from any of the other PC's to the "server"  fails.

I tried to ping the "server" machine using its netbios name "Reception" and ping returned the Pace's IP address not the pc address.

Swapped out for a test modem and all works fine
Use the IP address instead of the netbios name in ODBC and all works fine

The only other factor is that their internet is currently down ( phone lines only came on-line late this afternoon)

So it looks like the Pace is returning its IP for any DNS queries. Now this may be due to the internet being down (will post update when internet is up) but was wondering if anyone else had struck this issue? Is this by design?

If this is standard practice for this unit then i can see a lot of problems in the future

I also turned off all UPnP, media sharing etc just incase this was it. 

Please no suggestions for replacement modems, am aware of most of them but would like to resolve this particular issue without selling the client another unit unless absolutely necessary :)

Cheers
Clint


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3721 posts

Uber Geek
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  Reply # 787577 26-Mar-2013 21:56
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I think I have a similar problem with my Pace V5542. 

You can connect to other PC's inside the lan using their IP address, but, trying to connect using Netbios names completely fails. 

eg, I have a machine in my network, OFFICEPC, with an IP address and I can connect using that specific IP address. 

But, if i ping using 'OFFICEPC', it resolves to an external IP address outside my local network.

I thought maybe something in the v5542 configuration is at fault but it is at factory default settings and I haven't had time to investigate further. 

I'm interested if you get a fix for this issue, or someone from telecom can help.

192 posts

Master Geek
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  Reply # 788121 27-Mar-2013 17:14
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What IP address range has been defined in the device?
192.168.1.1 to ?



531 posts

Ultimate Geek
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  Reply # 788124 27-Mar-2013 17:21
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scorpiworld: What IP address range has been defined in the device?
192.168.1.1 to ?



The ip range is 192.168.1.0/24 ie 192.168.1.1 - 255

The DHCP range is 192.168.1.50 - 100

The "server" receives its static ip via a DHCP reservation

I am pretty sure this happening because the internet is down and the unit wants you to go to the config page to sort out the issue. However am still waiting for the client to let me know whether the internet is up, so I can check


Clint



531 posts

Ultimate Geek
+1 received by user: 100


  Reply # 788127 27-Mar-2013 17:24
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surfisup1000: I think I have a similar problem with my Pace V5542. 

You can connect to other PC's inside the lan using their IP address, but, trying to connect using Netbios names completely fails. 

eg, I have a machine in my network, OFFICEPC, with an IP address and I can connect using that specific IP address. 

But, if i ping using 'OFFICEPC', it resolves to an external IP address outside my local network.

I thought maybe something in the v5542 configuration is at fault but it is at factory default settings and I haven't had time to investigate further. 

I'm interested if you get a fix for this issue, or someone from telecom can help.


Do you use any external DNS servers such as google, unblock-us etc?

Clint

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Uber Geek
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  Reply # 788132 27-Mar-2013 17:41
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clinty: 
Do you use any external DNS servers such as google, unblock-us etc?

Clint


You mean on the PC's? No, just the dns which is automatically provided from DHCP i guess. 

And , not in the Pace either. 

Everything in the pace and network pc's are default 'auto'.   

I take out the pace, and put in my old router/modem and it works perfectly.  And, the internet is up. 


Pinging a local netbios name simply resolves to an external internet IP address (always the same external IP regardless of the netbios device I ping). 





531 posts

Ultimate Geek
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  Reply # 788169 27-Mar-2013 18:28
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surfisup1000: Pinging a local netbios name simply resolves to an external internet IP address (always the same external IP regardless of the netbios device I ping). 




By any chance is the ip returned your external ip address?( You can check at www.whatismyip.com )

Clint

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  Reply # 788318 27-Mar-2013 23:36
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clinty:
surfisup1000: Pinging a local netbios name simply resolves to an external internet IP address (always the same external IP regardless of the netbios device I ping). 




By any chance is the ip returned your external ip address?( You can check at www.whatismyip.com )

Clint



No, it definitely wasn't the external IP of the router.  

I ran some trace routes too -- and, it was definitely resolving to some random IP address on the internet. . 







531 posts

Ultimate Geek
+1 received by user: 100


  Reply # 788811 28-Mar-2013 17:06
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Ok,

My Clients internet is up and i am seeing something similar to surfisup1000 and something interesting



So the original name for the workgroup at this site was gateway (however I later changed it to gatewayvets incase this was causing a problem).

From the ping command it looks like the PC or router is adding gateway.pace.net to the name being pinged.

pinging gateway.pace.net returns the same IP as in the image above.

However pinging the third machine from this PC returns the internal IP as expected and gateway.pace.net is not appended to the name.

So i am confused :)

Unfortunatly the router is now in production and at a remote site so i cannot reset, or try different configs to see if I can fix the issue

If this is something in the config for these pace units it could cause a few issues with businesses when they start rolling out in big numbers

edit: Spelling :)


24 posts

Geek
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  Reply # 792279 3-Apr-2013 12:51
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I just installed one of these and it seems that if it has no internet connection it will return its own IP for any DNS query, it seems to do this so that when you access something on the web and the internet is down you get redirected to the modem's troubleshooting page.

This does not appear to be something you can disable.



531 posts

Ultimate Geek
+1 received by user: 100


  Reply # 792293 3-Apr-2013 13:05
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WhiteRabbit: I just installed one of these and it seems that if it has no internet connection it will return its own IP for any DNS query, it seems to do this so that when you access something on the web and the internet is down you get redirected to the modem's troubleshooting page.

This does not appear to be something you can disable.


Hi Whiterabbit,

Was just reading your install post and was going to query you on this :)

Can you do me a favour and check if pinging your other devices returns a result similar to the one I pictured above? I am especially interested if it adds the gateway.pace.net to the end of the device name you are pinging

cheers



24 posts

Geek
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  Reply # 792320 3-Apr-2013 13:31
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clinty:
WhiteRabbit: I just installed one of these and it seems that if it has no internet connection it will return its own IP for any DNS query, it seems to do this so that when you access something on the web and the internet is down you get redirected to the modem's troubleshooting page.

This does not appear to be something you can disable.


Hi Whiterabbit,

Was just reading your install post and was going to query you on this :)

Can you do me a favour and check if pinging your other devices returns a result similar to the one I pictured above? I am especially interested if it adds the gateway.pace.net to the end of the device name you are pinging

cheers




It sure does.

Seems that by default the domain is uses is .gateway.pace.net and that domain has a wild card entry to match *.gateway.pace.net and returns 64.99.80.30

Here is a test from a Linux box 

~$ ping load_of_crud
PING load_of_crud.gateway.pace.net (64.99.80.30) 56(84) bytes of data.
64 bytes from url.hover.com (64.99.80.30): icmp_req=1 ttl=240 time=297 ms
The DHCP server is handing back a search domain which Linux's reslov honors 

~$ cat /etc/resolv.conf 
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 192.168.1.1
search gateway.pace.net
Here is a test from a Cisco switch - this one ignores the search domain's given to it by DHCP

SW1#ping load_of_crud
Translating "load_of_crud"...domain server (192.168.1.1)
% Unrecognized host or address, or protocol not running.
However I can force it to behave the same 


SW1#ping load_of_crud.gateway.pace.net
Translating "load_of_crud.gateway.pace.net"...domain server (192.168.1.1) 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 64.99.80.30, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 294/300/302 ms


So to me without looking too deeply it seems that the DNS server/forwarder in these boxes either doesn't support dynamic DNS registrations or it is disabled and there isnt an option to enable it in the UI.



531 posts

Ultimate Geek
+1 received by user: 100


  Reply # 792334 3-Apr-2013 13:45
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Yeah,

That is what I was thinking, but needed to confirm :) Cheers for that.

If any of the Telecoms guys are lurking, can we have someone take a look at this. It will not cause issues if the box isn't doing DNS/DHCP (or there is a domain) but for a lot of small business this could lead to issues similar to what I ( and surfisup1000) are experiencing.

Clint



531 posts

Ultimate Geek
+1 received by user: 100


  Reply # 792336 3-Apr-2013 13:47
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I will track down my clients account details and log a call through the normal helpdesk as well.

3721 posts

Uber Geek
+1 received by user: 1209


  Reply # 792347 3-Apr-2013 13:54
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clinty: I will track down my clients account details and log a call through the normal helpdesk as well.


Keep us updated.  

In my opinion this is a firmware fault (or some incorrect default parameter).


24 posts

Geek
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  Reply # 792371 3-Apr-2013 14:09
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surfisup1000:
clinty: I will track down my clients account details and log a call through the normal helpdesk as well.


Keep us updated.  

In my opinion this is a firmware fault (or some incorrect default parameter).



I suspect it is just an option that telecom have overlooked in their UI, the box can do IPv6 etc but none of that is there. If you telnet to it I bet its all changeable (just need to know the user/pass)...

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