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# Configuring IP Forwarding for CTP Bundles (CTP Menu)

There are two ways to set up CTP bundles for IP forwarding:

- Direct drive—Packets are forwarded directly between drivers on the local and remote CTP device. Use this method for simple port-to-port configurations. We recommend that you use this method with supervision from JTAC.
- Direct drive disabled—Packets are forwarded based on information in the kernel’s IP stack.

Before you begin:

- Disable the bundle before you modify the bundle options.

To configure IP forwarding for CTP bundles using the CTP Menu:

1. From the Main Menu, select 1) Bundle Operations.
2. Select 1) CTP.
3. Select a bundle from the list.

   If you select an active bundle, you are prompted to disable the bundle before configuring it.

4. Select 2) Config.
5. Select 10) Advanced Options.
6. Configure option 13 as described in Table 1.

Field | Function | Your Action
--- | --- | ---
Disable direct drive | Specifies whether the CTP bundle uses direct drive or IP tables to forward packets. If you are using route redundancy, port mirroring, or VLANs, you must disable direct drive and use IP tables. | Select one: YES—CTP uses the kernel’s IP stack to forward packets. NO—CTP uses direct drive to forward packets.

#### Published: 2011-01-09

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