I've actually seen 8 secondary addresses on top of the primary address on one interface. I also recall a similar question on this forum about the same thing, and someone responded that they thought there was no limit. Seems there would be SOME type of limit.
Check the Command Reference for your version of IOS. Perhaps you can find it there. If not, then perhaps it is unlimited!
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...