Technical Documentation

Configuring Redundancy for Circuits Created by CTP Bundles (CTP Menu)

The packet protector introduces redundancy packets into the IP network, which enables a possible recovery scenario in the event of lost IP packets caused by transmission errors.

Before you begin:

  • Disable the bundle before you modify the bundle options.

To configure redundancy for CTP bundles using the CTP Menu:

  1. From the Main Menu, select 1) Bundle Operations.
  2. Select 1) CTP to configure a CTP bundle.
  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 9) Packet Protector(tm) as described in Table 1.

Table 1: CTP Bundle Redundancy Parameter Settings in the CTP Menu

FieldFunctionYour Action

Packet Protector(tm)

Specifies whether the CTP device sends and/or receives cloned (duplicated) packets.

This option is useful in networks where you expect significant IP packet loss.

You need to configure the packet protector so that the setting at one end of the bundle corresponds with the setting at the other end of the bundle.

For example, if you configure the local bundle to send cloned packets to the network, configure the remote bundle to expect cloned packets from the network.

Select:

  • Disable packet protector—The CTP device does not send cloned packets over the IP network, and it ignores cloned packets that it receives.
  • Send cloned packets to NET—The CTP device sends duplicated packets over the IP network.
  • Expect cloned packets from NET—The CTP device uses cloned packets that it receives when the IP network drops the original packet. If the device receives both the original and cloned packets, it ignores the cloned packet.
  • Send and expect cloned packets—The CTP device sends duplicated packets over the IP network. The CTP device uses cloned packets that it receives when the IP network drops the original packet.

Published: 2010-03-16