6-4
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 6 Storage Access Networking 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 is in the active mode. The ACT/LNK LED
is flashing green if the port is carrying traffic. The ACT/LNK LED is steady amber if the port is not
enabled and the link is connected, or if the port is enabled and the link is connec ted but there is a
SONET/SDH transport error. The ACT/LNK LED is not lit if there is no link.
You can find the status of the card ports using the LCD screen on the ONS 15454 SD H 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 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 the XC10G and
XC-VXC-10G cards. When the shelf uses the XCVT card, the FC_MR-4 can be used in only the
high-speed (slots 5/6 and 12/13).
The FC_MR-4 card can be provisioned as part of any valid ONS 15454 SONET/SDH network topology,
such as a path protection, bidirectional line switched ring (BLSR), or linear network topologi es. The
FC_MR-4 card is compatible with Software Release 4.6 and greater.
6.2 FC_MR-4 Card Modes
The FC_MR-4 card can operate in two different modes:
• Line rate mode—This mode is backward compatible with the Software R4.6 Line Rate mode.
• Enhanced mode—This mode supports subrate, distance extension, d ifferential delay, and other
enhancements.
The FC_MR-4 card reboots when a card mode changes (a traffic hit results). The Field Programmable
Gate Array (FPGA) running on the card upgrades to the required image. However, the FPGA image in
the card’s flash memory is not modified.

6.2.1 Line-Rate Card Mode

The mapping for the line rate card mode is summarized here.
• 1 Gbps Fibre Channel/FICON is mapped into:
–
STS-24c, STS-48c
–
VC4-8c, VC4-16c
–
STS1-Xv where X is 19 to 24
–
STS3c-Xv where X is 6 to 8
–
VC4-Xv where X is 6 to 8
• 2 Gbps Fibre Channel/FICON is mapped into:
–
STS-48c
–
VC4-16c