At least one. :-) It's really all going to depend on the number and types of routes, the types of routers, the rate of change in the network, and a lot of other things. Real numbers run between 40 and 600, from what I've seen in the field. The range is wide because circumstances vary.
Could you describe the type of network, and the problem you're trying to solve? We might be able to give a more closely aligned range with that information.
Okay.... I know there are some old design docs that say 40 is the max, or some such nonsense--we really do have some networks running in the hundreds of routers in a single area.
If you want to email me off line and ask for more specifics, that would be fine--it's probably something you could get help from your local SE on as well, with how a redesign on your network in ospf would look, and what a good migration plan would look like. Your local SE can also get their upline design folks involved, or run it up to the DNA Team for comments/help/etc, as well.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...