6-3
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter6 Storage Access Networ king Cards
6.1.2 FC_MR -4 Port-Level Indicators

6.1.2 FC_MR-4 Port-Level Indicators

Each FC_MR-4 port has a corresponding ACT/LNK LED. The ACT/LNK LED is solid green if the port
is available to carry traffic, is provisioned as in-service, and in the active mode. The ACT/LNK LED is
flashing green if the port is carrying traffic. The ACT/LNK LED is steady am ber if the port is not enabled
and the link is connected, or if the port is enabled and the link is connected but there is an SONET/SDH
transport error. The ACT/LNK LED is unlit if there is no link.
You can find the status of the card ports using the LCD screen on the ONS 15454 SDH fan -tray assembly.
Use the LCD to view the status of any port or card slot; the screen displays the number and severity of
alarms for a given port or slot. Refer to the Cisco ONS 15454 SDH Troubleshooting Guide for a complete
description of the alarm messages.

6.1.3 FC_MR-4 Compatibility

The FC_MR-4 cards can be installed in Slots 1 to 6 and 12 to 17 when used with XC-VXL-2.5G,
XC-VXL-10G, and XC10G cards. The FC_MR-4 card can be provisioned as part of any valid ONS
15454 SONET/SDH network topology, such as a subnetwork connection protection ring (SNCP) (CCAT
circuits only), multiplex section-shared protection ring (MS-SPRing), 1+1 subnetwork connection
(SNC), unprotected, or linear network topologies. The FC_MR-4 card i s compatible with Software R4.6
and greater.
6.2 FC_MR-4 Card Modes
The FC_MR-4 card can operate in two modes:
•Line Rate mode. This mode is backward compatible with So ftware Release 4.6 Line Rate mode.
•Enhanced mode. This mode supports subrate, distance extension, and other enhancements.
The FC_MR-4 card reboots when changing card modes (a traffic hit results). The FPGA running on the
card upgrades to the required image. However, the FPGA image in the card’s flash is not be modified.

6.2.1 Line-Rate Card Mode

Mapping for the line-rate card mode is summarized here.
•1 Gbps Fibre Channel/FICON is mapped into:
–
SONET CCAT: STS24c, STS48c
–
SONET VCAT: STS3c-8v, STS1c-24v
–
SDH CCAT: VC4-8c, VC4-16c
–
SDH VCAT: VC4-8v
•2 Gbps Fibre Channel/FICON is mapped into:
–
SONET CCAT: STS48c
–
SONET VCAT: STS3c-16v, STS1c-48v
–
SDH CCAT: VC4-16c
–
SDH VCAT: VC4-16v