Gigabit Ethernet over STM-1/OC-3 SFP Converter

• Full-duplex 1000 Ethernet remote bridge over STM-1 or OC-3
• Direct GbE mapping to VC-4/STS-3c; standard GFP encapsulation (ITU-T G.8040, G.7041/Y 1303)
• Up to four QoS queues per VLAN priority (IEEE 802.1p) with Strict Priority scheduling
• Fault propagation from SDH/SONET to Ethernet link
• VLAN stacking (Q in Q) per IEEE 802.1Q
• Remote software download with TFTP
• Inband and out-of-band management for configuration, status and diagnostics; SNMP traps
• Flow control mechanism for LAN and WAN traffic
• Supports multi-source agreement (MSA) product identification codes
• Hot-swappable, with a special release mechanism

• Reduces CapEx by providing a cost-effective alternative to standalone units or expensive line cards
• Allows easy integration with autonomous operation
• Increases network flexibility by allowing quick, ad-hoc installations
• Supports a scalable migration to fiber Ethernet access
• Eliminates the need for equipment certification and integration, and for special operator training
• Interoperable with third-party routers and switches

The innovative SFP-format MiRICi-155 is a miniature converter, delivering Gigabit Ethernet (GbE) services over existing SDH/SONET networks, simply and cost effectively. The MiRICi-155 maps GbE frames into VC-4 or STSc-3, using standard GFP encapsulation according to G.7041/Y.1303. This allows book-end connections as well as third-party interoperability.

Housed in a small form factor (SFP) enclosure, it is designed for quick and simple insertion into any Ethernet device port with a compatible SFP socket. The MiRICi-155 is a simple and cost-effective alternative to external, standalone converter units or conversion cards for user devices. Deriving power from the host device, it requires no additional power supply and offers significant savings in space, cabling and power consumption, as well as simplifying management.
The MiRICi-155 features a standard Multisource Agreement (MSA) edge connector as the GbE interface, supporting 1000BaseX in full duplex mode. Connection to the STM-1/OC-3 link is performed via a standard FO LC connector.

Inband and out-of-band management

The MiRICi-155 can be managed out-of-band through the I²C serial bus on the MSA connector. Inband management is performed via any Web browser, as the Web agent is implemented inside the MiRICi-155. The MiRICi-155 supports flow control by generating standard Pause frames whenever the internal buffer reaches its high water mark, thereby adjusting the bandwidth between the LAN and WAN as necessary. In addition, it supports fault propagation from the WAN to the LAN.

End-to-end quality of service (QoS) is enabled using four priority queues per VLAN priority
(802.1p). In addition to supporting MSA product identification codes, the MiRICi-155 is hot-swappable and features a special release mechanism for easy extraction from the SFP socket. The economical SFP plug format is an ideal and affordable solution for carriers and service providers bridging GbE LANs over SDH/SONET WANs, as well as for similar applications in private enterprise and campus networks. MiRICi-155 can operate opposite MiRICi units installed on remote equipment or opposite RAD’s RICi-155GE Gigabit Ethernet over STM-1/OC-3 NTU. Alternatively, the MiRICi devices can operate opposite any Ethernet switch that supports standard GFP encapsulation.