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Tunnel Creation
ERX routers can have both unsecured GRE, DVMRP,
and L2TP tunnels and tunnels that are secured by IPSec. However, unsecured
L2TP tunnels are not allowed on the ISM. You use the following commands
to create a secure tunnel:
- L2TP tunnels—Use the enable ipsec transport command in the L2TP destination profile
- GRE and DVMRP tunnels—Use the ipsec-transport keyword in the interface tunnel command
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