WebEML User Manual Digital Core Facing Loopback
961
64 Digital Core Facing Loopback
64.1 Purpose
This chapter provides instructions to perform Digital Core Facing Loopback for the
9500 MPR.
64.2 General
Digital Core Facing Loopback mode uses the signal to be transmitted by the
MPT-HL/HLC/HC/XP Transceiver and replaces the signal received by the MPT-HL/
HLC/HC/XP Transceiver and sends the transmit signal back to the P8ETH/EASv2/
MPTACC card.
This is an internal loopback.
Digital Core Facing Loopback can only be enabled on the aggregate traffic.
This loopback is a Loop and Continue.
MPT-HL/HLC/HC/XP Transceiver receive traffic will be dropped.
When this loopback is activated the expected behavior is as follows:
• TDM2TDM and TDM2ETH flows are forwarded back to Core card with source
and destination MAC addresses swapped.
− For TDM2ETH flows, where the ECID Tx and ECID Rx are the same value,
the loopback works.
− For TDM2ETH flows, where the ECID Tx is different form ECID Rx, the
loopback fails.
• Generic Ethernet flows are dropped.
64.3 Procedures
This section provides the following procedures:
• To activate a Digital Core Facing Loopback
Release 7.0.0 3DB 19286 ACAA Issue 01
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