Question

XP routing table changes kill Nortel Contivity VPN client

Asked by: Jharper

Ok here's a tricky one.

We have been given the Nortel Contivity VPN client as a solution to access systems that are external to out network that we do not control.  We also have an internal Cisco based site-to-site VPN that connects all of our offices together.  Our corportate subnet is 10.10.10.0/24 and this problemed branch office subnet is 10.10.45.0/24.  All of our internal systems work great.

OK here is the problem.  A user on an XP machine will connect to the systems external to our netowrk without a problem using the Nortel Client.  Once connected they can access the systems they need until XP changes its internal routing table.  The Nortel Client automatically disconnects after a routing table change by design.  These branch office machines (10.10.45.0/24) access several servers on the corporate network (10.10.10.0/24).  One of the branch machines accesses say 10.10.10.23 for email it adds that address to its routing table and disconnects the Nortel VPN.

I thought I would get by with scripting a route add in the logon script that adds a route to each XP machine that looks like the following (route add 10.10.10.0 MASK 255.255.255.0 10.10.45.1 METRIC 1).  Well as you can see below 10.10.10.18 was also added automatically to the routing table therefore, killing the VPN.  If all of 10.10.10.0 traffic is already routed then why is XP routing each IP additionally?  I have to find a way to stop this so I can keep the Nortel VPN up.  Any suggestions?

===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 0f 1f da 7c 61 ...... Broadcom NetXtreme 57xx Gigabit Controller - Pac
ket Scheduler Miniport
0x3 ...44 45 53 54 42 00 ...... Nortel IPSECSHM Adapter - Packet Scheduler Minip
ort
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0       10.10.45.1     10.10.45.60       10
       10.10.10.0    255.255.255.0       10.10.45.1     10.10.45.60       1
      10.10.10.18  255.255.255.255       10.10.45.1     10.10.45.60       1
       10.10.45.0    255.255.255.0      10.10.45.60     10.10.45.60       10
      10.10.45.60  255.255.255.255        127.0.0.1       127.0.0.1       10
   10.255.255.255  255.255.255.255      10.10.45.60     10.10.45.60       10
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
        224.0.0.0        240.0.0.0      10.10.45.60     10.10.45.60       10
  255.255.255.255  255.255.255.255      10.10.45.60     10.10.45.60       1
  255.255.255.255  255.255.255.255      10.10.45.60               3       1
Default Gateway:        10.10.45.1
===========================================================================
Persistent Routes:
  None


Thanks!
JHarper

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2004-10-20 at 13:51:25ID21176252
Tags

nortel

,

vpn

,

contivity

,

routing

,

client

Topic

Windows NT Networking

Participating Experts
2
Points
0
Comments
5

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. Nortel Contivity VPN client thru Cisco PIX 506e
    I have a Cisco PIX 506e firewall. I have 3 clients that connects to an external network using Nortel Contivity VPN Client, but since I installed the PIX they are unable to connect. What do I need to do in the PIX to allow contivity VPN?
  2. Here is the issue running both CISCO VPN Client and Nortel …
    Here is the issue running both CISCO VPN Client and Nortel VPN Client on the same PC but unable to run the Nortel client after installing the CISCO VPN client. Need both to connect to various hospitals VPN connections. Help? I have done some research and found that CISCO V...
  3. Nortel vpn and reflexive ACL
    I've never used Nortel vpn, but have some familiarity with Cisco vpn. I need to make sure that a visitor on Friday will be able to use Nortel vpn from my office to remote desktop to a computer in his office. While I'm not concerned with connectivity at the other end, I wan...
  4. cisco vpn and nortel vpn client on xp simultaneously installed
    Hi, I need to use the cisco vpn and nortel vpn clients on the same machine for connecting to different systems (but not at the same time). Problem is that when Iinstall the Cisco VPN client with the Nortwl client installed, I loose IP connectivity completely - an ipconfig s...
  5. Cisco 2811 VPN
    I'm trying to implement a VPN using a spare 2811. I've followed the commands from the following Cisco configuration guide (http://www.cisco.com/en/US/customer/products/sw/secursw/ps2308/products_configuration_example09186a00801c4246.shtml) however I can't seem to "get&q...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: masterbakerPosted on 2004-10-24 at 10:20:30ID: 12394313

Have you tried updating to the latest VPN client version?  You can go to Nortel's website to get a 30 day trial version of the latest client here:

http://www.nortelnetworks.com/products/01/contivity/multi_os/

I also found another similar problem to yours.  Here's a link to their post and the response:

http://www.broadbandreports.com/forum/remark,9677729~mode=flat

Sorry I don't have an exact fix for you.  I'll post back if I can come up with anything else.

Jeff

 

by: JharperPosted on 2004-10-27 at 08:43:32ID: 12423470

Thanks for the suggestion Masterbaker..  The only way I've found to help the is to make the changes that I mentioned earlier.  I'll paste the piece of my Kixtart script below so that it may help someone else.

Shell ('%Comspec% /C route add 10.10.10.0 MASK 255.255.255.0 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.1 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.2 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.3 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.4 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.5 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.6 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.7 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.8 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.9 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.10 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.11 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.12 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.13 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.14 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.15 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.16 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.17 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.18 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.19 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.20 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.21 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.22 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.23 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.24 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.25 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.26 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.27 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.28 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.29 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix
Shell ('%Comspec% /C route add 10.10.10.30 MASK 255.255.255.255 10.10.45.1 METRIC 1') ;Nortel VPN fix

 

by: JharperPosted on 2004-11-08 at 08:10:38ID: 12524459

Mods:

Please close this question and refund my points.

Thank you,
Jharper

 

by: moduloPosted on 2004-12-14 at 04:30:55ID: 12818484

PAQed with points refunded (250)

modulo
Community Support Moderator

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...