Alcatel-Lucent 9500 MXC User Manual page 184

Chapter 3. 9500 MXC Nodes
Vol. II-3-90
• Ring-wrap protected circuits are configured for the NxE1 traffic.
If a radio link fails:
• RSTP re-directs Ethernet traffic on the ring.
• 9500 MXC ring protection re-directs E1 traffic on the ring to bypass the break.
When used with an external RSTP switch:
• The DAC ES or DAC GE should be configured for Mixed Mode (not
Transparent mode), to provide dedicated ports for each of the two (east and
west) transport channels (C1 and C2).
• There can be an equal or unequal number of DAC ES or DAC GE plug-ins on
the ring.
• Disable Address Learning must be selected in the Plug-ins screen.
When used with the built-in RSTP switch provided on the DAC GE:
• With its RWPR capability the DAC GE provides enhanced (fast-switched)
RSTP protection management of Ethernet traffic on the ring.
• Transparent mode must be selected (where one DAC supports both the east and
west links).
For information on DAC ES configuration, refer to: DAC ES and IDU ES
Configuration, Volume IV, Chapter 7.
For information on DAC GE configuration, refer to: DAC GE Configuration,
Volume IV, Chapter 7.
Alcatel-Lucent