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Table Of Contents
Storage Access Networking Cards
6.1.1 FC_MR-4 Card-Level Indicators
6.1.2 FC_MR-4 Port-Level Indicators
6.2.3 Distance Extension (Enhanced Mode Only)
6.2.4 Interoperability Features (Enhanced Mode Only)
Storage Access Networking Cards
Note
The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration. Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's path protection feature, which may be used in any topological network configuration. Cisco does not recommend using its path protection feature in any particular topological network configuration.
The FC_MR-4(Fibre Channel Multirate 4-port) card is a 1.0625- or 2.125-Gbps Fibre Channel/Fiber Connectivity (FICON) card that integrates non-SONET framed protocols into a SONET time-division multiplexing (TDM) platform through virtually concatenated payloads. For installation and step-by-step circuit configuration procedures, refer to the Cisco ONS 15454 Procedure Guide.
Chapter topics include:
6.1 FC_MR-4 Card Overview
The FC_MR-4 card uses pluggable Gigabit Interface Converters (GBICs) to transport non-SONET/SDH-framed, block-coded protocols over SONET/SDH. The FC_MR-4 enables four client Fibre Channel (FC) ports to be transported over SONET/SDH, encapsulating the frames using the ITU-T Generic Framing Protocol (GFP) format and mapping them into either T1X1 G.707-based Virtual Concatenated (VCAT) payloads or standard contiguously concatenated SONET/SDH payloads. The FC_MR-4 card has the following features:
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Figure 6-1 shows the FC_MR-4 faceplate and block diagram.
Figure 6-1 FC_MR-4 Faceplate and Block Diagram
6.1.1 FC_MR-4 Card-Level Indicators
Table 6-1 describes the two card-level LEDs on the FC_MR-4 card.
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 amber 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 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 XCVT and XC10G cards. The 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 topologies. The FC_MR-4 card is compatible with Software R4.6 and greater.
6.2 FC_MR-4 Card Modes
The FC_MR-4 card can operate in two different modes:
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The FC_MR-4 card reboots when a card mode changes (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 modified.
6.2.1 Line-Rate Card Mode
The mapping for the line-rate card mode is summarized here.
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6.2.2 Enhanced Card Mode
The features available in enhanced card mode are given in this section.
6.2.2.1 Mapping
1 Gbps Fibre Channel/FICON is mapped into:
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2 Gbps Fibre Channel/FICON is mapped into:
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6.2.2.2 SW -LCAS
Virtual Concatenation Group (VCG) is reconfigurable with the software link capacity adjustment scheme (SW-LCAS) enabled, as follows:
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6.2.3 Distance Extension (Enhanced Mode Only)
This following list describes the FC_MR-4 card distance extension capabilities.
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6.2.4 Interoperability Features (Enhanced Mode Only)
The interoperability features are as follows:
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6.2.5 Link Integrity
The link integrity features are as follows:
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6.2.6 Link Recovery
Link recovery has the following features:
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Note
6.3 FC_MR-4 Card Application
The FC_MR-4 card reliably transports carrier-class, private-line Fibre Channel/FICON transport service. Each FC_MR-4 card can support up to four 1-Gbps circuits or four 2-Gbps circuits. Four 1.0625 Gbps FC channels can be mapped into containers as small as STS1 (subrate), with a minimum of STS-24c/VC4-8c for full rate, and as large as STS48c/VC4-24c. Four 2.125 Gbps FC channels can be mapped into containers as small as STS1 (sub-ate), with a minimum of STS48c/VC4-24c for full rate, and as large as STS48c/VC4-24c.
The FC_MR-4 card incorporates features optimized for carrier-class applications such as:
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The FC_MR-4 payloads can be transported over the following protection types:
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The FC_MR-4 payloads can be transported over the following circuit types:
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The FC_MR-4 card supports virtual concatenation (VCAT). See the "10.15 Virtual Concatenated Circuits" section on page 10-30.
The FC_MR-4 uses pluggable gigabit interface converters (GBICs) for client interfaces. See Table 5-21 on page 5-26 for a list of GBICs that are compatible with the FC_MR-4.
Posted: Tue Nov 27 06:13:26 PST 2007
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