Required: PAN IPSEC Hub best practices for 300 route based IPSEC tunnels

[rtobin]

Pan documentation is very weak on large scale mutli-vendor IPSEC hub terminations.   Can someone help out and provide best practices, reference architecture, guides, pitfalls or experiences?

My design goals:

     -  Separate VSYS

     -  Use dynamic routing for Tunnel Interfaces. (Either OSPF with stub areas to inject default to remote tunnels or RIP)

     -  Tunnel Interface network routing summarization for optimal system performance with maximum spokes per tunnel.

     -  Separate virtual router for un-trust interface VPN termination with  separate virtual router for tunnel and trust interface.

     -  IF OSPF maximum spokes per OSPF Area.

     -  Dynamic routing protocol for VPN VSYS is an autonomous system, BGP summaries are used for trusted network routing.

My environment today is multi-tenant 7050 design utilizing BGP \ OSPF for segregated departmental internet with 50,000 users in multi-vrf interconnectivity.   This VPN service is another layered virtual system that will be collapsed as part of our firewall consolidation project.  

[oklier]

Here are some docs that can help out, hopefully:

How to Configure IPSec VPN

Configuration Guidelines when Terminating IPsec VPN Tunnels on the Firewall

How to Troubleshoot VPN Connectivity Issues

Configuring route based IPSec using OSPF

Configuring Hub and Spoke Route based VPN

Configuring route based IPSec with overlapping networks

How to Configure Dual VPNs with Dual ISPs from a Single PAN to a Remote Site

These are my go to docs and help out a lot.

Hope they help.