virtual tunnel interfaces / crypto maps

Jun 11, 2008 2 Replies
virtual tunnel interfaces / crypto maps open original image

dear all, wanted to see if i could get any comments on the issues around the concept of 'virtual tunnel interfaces' as a method of setting up ipsec vpn's



as i have (hopefully correctly) read, there is advantage to be gained from using VTI's instead of using 'crypto maps' applied to an interface on account of being applied 'interface-centric' capability such as dynamic routing, QOS etc.



one most salient question would be whether they provide equivalent capability to the 'dynamic crypto map;' to support windows VPN clients ? - reverse route injection etc.



are there issues of coexsitence such that a router provide ipsec encryption to one site, while using a VTI configuration to establish ipsec vpn with another device ?



help in this gladly received



Graham



Some of the following documents may address your questions.

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Best Regards, News Reader

yep - good docs had got one of them

re routing - to quote - "Dynamic routing can be used with SVTIs. Routing with DVTIs is not supported or recommended. "

does this mean that we can not redistribute the dynamically created routes for the dynamic peers ?

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