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Check the cable or change it - then set both routers ethernet ports as 'auto' - and also check for the type of crossover cable you are using -and what is the minimum length requirement also.
Go for any router with 3600 series and above , - calculate how many WAN ports you need - so order one or multiple routers with that config,- go for VPN 3015/3080 (depends on no. of IPSec sessions) box and you will be using only IPsec.ThanksSaumen S...