Perform protection switching
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WebEML User Manual
MPTACC radio cards support 1+1 EPS traffic/services protection switching when
main (slots 3, 5, and/or 7) and spare (slots 4, 6, and/or 8 respectively) are correctly
equipped and configured. Up to two 1+1 EPS protection pairs can be configured in
this configuration.
Two MPTACC radio ports on the same MPTACC card support 1+1 EPS traffic/
services protection switching when both MPT Access ports are correctly equipped
and configured on the same MPTACC radio card. One 1+1 EPS protection pair can
be configured per MPTACC card.
The system behavior for the Transmit flow (traffic flow from traffic/services cards to
Core card) on a local access traffic/services card is as follows:
• Both traffic/services cards (main and spare) receives the signal from patch
panel. The Active traffic/services card sends its own signals to both Core cards
(main and spare).
• The Standby traffic/services card does not send traffic (that is, link is up but
active traffic/packets are not carried).
• Each Core (main and spare) selects the signal coming from the traffic/services
card declared Active. Each Core ignores anything coming from the Standby
traffic/services card
The system behavior for the Receive flow (traffic flow from Core card to traffic/
services cards) on a local access traffic/services card is as follows:
• Both Core cards (Active and Standby) sends its own signal to the traffic/services
cards (main and spare). The Active traffic/services card sends its own signals to
both Core cards (main and spare).
• The traffic/services cards (main and spare) selects the signal declared as Active.
• Each traffic/services card (main and spare) ignores anything coming from the
Standby Core
Note: The SDH 1+1 EPS protection type is not-revertive and can’t be changed.
Note: For radios configured with 1+1 HSB/SD, EPS protection switching criteria
provisioning is not supported. the restoration criteria selected for HSB-TPS is applied to
EPS automatically.
Release 7.0.0 3DB 19286 ACAA Issue 01
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