I've been messing with IPsec encapsulation of GRE based tunnels on a wireless network and I'm really starting to hit some brick walls. In this case I've got a pair of 2620s at each location, a private T1 between them, and wireless ISP service on each end to back them.
CDP does not flow over GRE tunnels. The only way I see to ensure that the remote neighbor is up is with an L3 adjacency (dynamic routing protocol). How does one mimic interface tracking with GRE? In this case I used EIGRP but I can envision scenarios where I'd want that CDP route-map verify neighbor stuff. CDP does not work over VLANs if you're trying to do remote neighbor verification for a route-map. Below is a common configuration for our customers: cisco router on our network cisco switch some sort of radio customer side radio customer router If I want to use a route-map to forward traffic to the wireless network first, with a second statement to light up an ISDN backup, it won't work unless I share my IGP with the customer(!). This sharing is theoretically possible but the filtering would be a nightmare. Shouldn't CDP frames have the same scope as a broadcast, rather than being blocked by a CDP aware layer 2 device? Any gurus out there care to comment on this? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59177&t=59177 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
