Creating GRE Tunnel from 2 -6506 to Router

[avicapri]

I have 2 6506 Swicthes.I want to create GRE TUNNEL from these switches to a Router .Can it be possible ?

[paolo bevilacqua]

What supervisor and software do you have in the 6509 ?

[avicapri]

SUP720-3B & IOS is s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD4

[ilya.varlashkin]

If you want single tunnel, search CCO for mGRE and DMVPN (skip IPsec in examples).