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Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2
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Chapter 17 CE-Series Ethernet Cards
CE-MR-6 Ethernet Card
This circuit is supported only on CCAT circuit sizes of STS-48c, STS-24c, STS-12c, STS-9c, STS-6c,
STS-3c, and STS-1 (ANSI) or VC3, VC4, VC4-2c, VC4-3c, VC4-4c, VC4-8c, and VC4-16c (ETSI). The
creation of Ethernet drop and continue (unidirectional) circuits is supported on protected (path
protected/SNCP and 1+1 protection) schemes and unprotected circuits with multiple drop points.
Note
The Ethernet drop and continue feature is supported on all cross-connect cards except XC and XCV T.
The ONS 15310 configuration determines the maximum drop points supported—multiple drops on ports
of the same card or different cards in the chassis. Figure 17-10 shows unidirectional drop from POS0
port on CE-MR-6 A to ports POS0, POS1, POS2, POS3 of the CE-MR-6 B.
Figure 17-10 Unidirectional Drop from CE-MR-6 Card A to CE-MR-6 Card B
The Ethernet drop and continue feature supports unidirectional link integrity and performance
management.
Alarms are monitored in the forward direction for the Ethernet drop and continue circuits and suppressed
in the reverse direction, that is, STS alarms will not be detected at the source port. These unidirectional
circuits are configured through CTC and TL1. To create an Ethernet drop and continue circuit, see
“Chapter 6, Create Circuits and VT Tunnels” of the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Procedure Guide. For TL1 provisioning commands, refer to the Cisco ONS SONET TL1 Command
Guide. For information on Alarms, see “Chapter 2, Alarm Troubleshooting” of the Cisco ONS 15310-CL
and Cisco ONS 15310-MA Troubleshooting Guide.
Administrative and Service States with Soak Time for Ethernet and SONET Ports
The CE-MR-6 card can be managed by TL1, SNMP, CTC or CTM. The card supports the administrative
and service states for the Ethernet ports and the SONET circuit. For more information about card and
circuit service states, refer to the “Administrative and Service States” appendix in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual.
Unidirectional Unidirectional Unidirectional Unidirectional
Unidirectional
circuit
Drop Drop Drop Drop
CE-MR-6 Card A
(source)
POS0
port
253039
CE-MR-6 Card B
POS0
port
POS1
port
POS2
port
POS3
port
Node 1
ONS 15310