I only have real experience with OSPF and if I remember right the default bandwidth for a tunnel is 9M if you do not set the bandwidth. No matter, because it is only the number used to calculate the route's metrics for placement in the routing table and not the actual limits. The tunnel limits will be met most likely through the transmission means and/or the physical interface capabilities.
Since tunnels are a logical construct, a default logical "bandwidth" is provided by IOS. Actual tunnel bandwidth is not restricted nor determined by this default. The default can be adjusted to reflect actual bandwidth using a tunnel's bandwidth statement.
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...