large-scale IPSEC tunnel deployment

[Alex Yuriev <alex () yuriev com>]

Hello,  
        Does anyone have any experience with large scale production IPSEC
tunnel deployment, where large scale is defined as over 100 net-to-net
tunnels to different destination networks active at any time?
        If so, would such person(s) mind sharing any
quirks/platforms/implementations for more or less automated topology
testing/verification?

Thanks,
Alex