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19 posts


# 21841 8-May-2008 14:31
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Gidday Guys,

I have an issue which I would like to discuss, one that you can guess from the topic of this post. So here goes,

I am the Sales/IT Manager for a small company in South Auckland, where we use Compass Communications (for both our Wired and Wireless Broadband solutions). We are trying to run a simple VPN solution (inbuilt into our Cisco 857 router) to grant access when i am travelling round the country. 

Here is where we have constant problems,
Firstly, our connection drops out intermittantly. This requires a full reboot of the router to get the connection working again. The problem here is that both compass and our router say they are still connected, but just wont transfer and data either direction. This gets even more complicated becuase we have changed routers twice, and used both wireless and wired broadband, this problem still exsists. This problem has an interesting twist as we discovered that by turning off all vpn software (on either router) the dropouts do not happen.

Second Problem, We have trouble connecting to the VPN (when the connection is stable) and i have diagnosed this to another interesting problem. If you ping our gateway, you will get about 50%+ packetloss. This will happen if you ping from slingshot, xnet, telecom etc, the only time you get no packetloss is when you ping via my Vodem. When running a traceroute the packetloss is occuring between my routers and Compass Servers, interesting. 

I have tried connecting both different routers (one using wireless and the other using wired) and get the same symptons/problems.

Anyone got any ideas from here? Other than dumping Compass, which is a valid option right now, as they seem unwilling to resolve the problem and keep either pointing at us, or every other ISP in New Zealand.

Mike J


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  # 129374 8-May-2008 14:40
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Sounds odd. Have you tried passing the VPN through and creating endpoints on a different brand of router (or even on a server)?

Can you get a temporary alternate WAN connection in there (another Vodem, Woosh, a wireless or wired connection to the business next door, whatever) to see if you can replicate the problem with another ISP at the main site? If the problem replicates, its probably not Compasses fault. If the problem doesn't replicate, you have an easy answer...

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  # 129378 8-May-2008 14:50
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Hi Tony, (Gosh that was a quick reply).

In the past, we have had a setup where the VPN was just passed through the router (the endpoint was our server), same issue.

We have currently got the endpoint as our 857 router, thus I cant change the ISP on it so easily, (But i dont doubt for a moment that if i connected the server up to a Vodem and had that running as an endpoint then i would have a fully functional vpn).

I can try relocating this setup to another location to try another ISP, and i guess that would be my next best solution.



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  # 129379 8-May-2008 14:54
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Yep, without wanting to jump the gun, gut feeling is that something is screwy with your ISP. If they are unwilling to help, dumping them might be the reality. Not a hard job if you don't have any critical services tied to them, and they are just a "stupid connection".

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  # 129402 8-May-2008 16:02
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Well i will check it all out. My fear is they purposely block this data as much as they can. Becuase they sell additional "VPN" services, at a hefty price.

Thanks for your help, i will have a resonse to you this evening.

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  # 129424 8-May-2008 17:14
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Requiring a full reboot of the router is a bit odd, especially if this does not occur when you are not using the VPN functionality on your router.

Have you tried manually disconnecting your PPP connection then trying to connect it again and looking at the results? You can get some pretty detailed PPP debugging info from your router if you find it does not reconnect. If it does reconnect then a quick and dirty fix would be to use the IP SLA feature to teardown and reconnect your PPP connection when this issue occurs.

Regarding the packet loss perhaps post a tracert showing the issue if you are able.

MikeyJ: My fear is they purposely block this data as much as they can. Becuase they sell additional "VPN" services, at a hefty price.

No, not the case.

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  # 129607 9-May-2008 09:46
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Here are some Tracert's for your viewing pleasure.

TraceRoute 1
TraceRoute 2
Ping from ICONZ
Ping from Slingshot

Ping from Vodem

I hope these help somewhat.

By the way, i hooked the system up last night to my XNET HSI, and it all worked fine, no problems with pings etc.

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