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Thanks for your last post. My 1721 router does have a vpn module installed and i have upgraded it with the lastest ios that support the 3des vpn module. Further more I did a configuration according a sample configuration on cisco site. 1721#sh run Building configuration... Current...

ok, all I have to do is to set up this 1721 router as an access vpn router to support users using pcs that running different version of windows. One thing I forgot to mention last time is that this router is configured with DDS through it's serial interface and function as an internet gateway...

Hi professionals, Could anyone help me with how to configure Cisco 1721 (with VPN module installed) as a VPN gateway??? Does vpn client has to install Cisco Secure VNP client to access through this vpn router? Many thanks.

Hi there, Bother router's subnet masks are wrong because they cause overlapping networkds with the one that TFTP server resides on.

Hi ak8899, Thanks for your help. I have got it working.

Hi there, Just use a cross-over cable to connect, that's all. Good luck.

Hi Cisco gurus, I have just bought an ISDN simulator but it didn't come with any isdn cables. The simulator comes with 2 Bri S/T ports and my Cisco 2503 router also comes with Bri S/T port. Does anyone know the pinout of this kind of ISDN cable? Or any useful link, please? Thanks very much!

Hi stoney66, Thanks for your help but I don't see a format command for a 2500 series router. Any other suggestions?

Hi all Cisco professionals, I encountered something strange of a flash memory for Cisco 2500 router. It displays a 4mb flash, but when I put this "4mb" flash into another router which has got an 8mb flash in the 1st slot, it displays 16mb of flash memory. At one time, I saw 3...

Hi Brat, Thanks for your help, but it seems the link you posted has been broken. I have checked 3Com Website, but there is no support for this discontinued router. Is there any other way that I can find the enterprise OS? Thanks a lot.

Hi all 3com gurus, I bought a Netbuilder 437 multiprotocol router recently. Some function I want to use is only come with Enterprise OS. Could anyone kindly tell me where I can download? Many thanks.

Could anyone kindly tell me where can I download Netbuilder 437 (3C8437)management manu, or similar ebook teaching how to configure Netbuilder routers. Many thanks!