With IPSEC, there is a hard limit of 10 IPSEC VPN tunnels that can be associated with the same SA gateway.
There is a limit of 10 IPSEC VPN tunnels that can be associated with the same SA gateway. Trying to configure more will result in the following error:
>Tunnel interface tunnel.x multiple binding limitation (10) reached. IPSEC Tunnel: Tunnel Name:Zone
>Configuration is invalid
Workaround is to create an additional tunnel interface with different IP.
You can then set a tunnel of Phase 2 and associate the same IPSec gateway (creating a new tunnel interface with different ip), gaining another 10 more Proxy-Ids.