Configuration Examples for GRE

Web: Example for Configuring a Static Route-based GRE Tunnel

This section provides an example for configuring a GRE tunnel to which two devices direct traffic based on static routes.

Web: Example for Configuring an OSPF-based GRE Tunnel

This section provides an example for configuring GRE tunnel to enable two connected private IP networks to exchange OSPF routing information over the Internet.

Web: Example for Configuring an IPsec over GRE Tunnel

CLI: Configuring a Static Route-based GRE Tunnel

This section provides an example for configuring a GRE tunnel to which two devices direct traffic based on static routes.

CLI: Configuring an OSPF-based GRE Tunnel

This section provides an example for configuring GRE tunnel to enable two connected private IP networks to exchange OSPF routing information over the Internet.

CLI Example: Configuring an IPSec over GRE Tunnel

This example provides the configuration of an IPSec over GRE tunnel between the enterprise branch and headquarters.