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Cisco 3030 / Nortel Contivity LAN-LAN

I am trying to set up a LAN-LAN connection between a 3030 and a Nortel Contivity. We are trying to match IPSEC Authentication parameters. The 3030's only choices are ESP/MD5/HMAC-128 and ESP/SHA/HMAC-160. The Nortel box only has ESP/MD5 and ESP/SHA. I can't find any place to add or change the IPSEC Authentication choices. Are these the only options?

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Re: Cisco 3030 / Nortel Contivity LAN-LAN

IPSec implementation on Cisco boxes is fully standards compliant. The same should be the case on the Contivity. I guess choosing ESP/MD5/HMAC-128 on the concentrator and ESP/MD5 on contivity ( or ESP/SHA/HMAC-160 on the concentrator and ESP/SHA on contivity) should work. There are a few resources that will help you with your configuration. The VPN 3000 concentrator support page has a few example which deal with setting up LAN-to-LAN tunnels with third party vendors. The support page is accessible at http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Hardware:Cisco_VPN_3000_Concentrator&viewall=true.

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