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Copying the Packet Loss Priority to the CLP Bit on ATM Interfaces

For a provider-edge (PE) router with customer edge (CE)-facing, egress, ATM2 IQ interfaces configured with standard AAL5 encapsulation, you can enable the packet loss priority (PLP) setting to be copied into the cell loss priority (CLP) bit.

Note:

This configuration setting is not applicable to Layer 2 circuit encapsulations because the control word captures and preserves CLP information. For more information about Layer 2 circuit encapsulations, see the Junos OS Network Interfaces Library for Routing Devices.

By default, at egress ATM2 IQ interfaces configured with standard AAL5 encapsulation, the PLP information is not copied to the CLP bit. This means the PLP information is not carried beyond the egress interface onto the CE router.

You can enable the PLP information to be copied into the CLP bit by including the plp-to-clp statement:

You can include this statement at the following hierarchy levels:

  • [edit interfaces interface-name atm-options]

  • [edit interfaces interface-name unit logical-unit-number]

  • [edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number]

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