MiRICi-155

Gigabit Ethernet pārraide caur SDH / SONET tīkliem

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MIRICi-155 is a state-of-the-art network termination unit that bridges between Gigabit Ethernet networks and
STM-1/OC-3 networks, providing simple, efficient, and cost—effective Gigabit Ethernet connectivity over SDH/SONET networks.

MIRICi-155 offers a migration path for connecting future-ready IP devices to existing SDH/SONET networks.

Typical applications include connecting Gigabit Ethernet LANs over STM-1/OC-3 lines (Figure 1), and connecting Gigabit Ethernet LANs over wireless STM-1/OC-3
links 

The unit supports frame sizes of 64–10000 bytes, including VLAN-tagged frames.

Highlights

• Gigabit-to-STM-1/OC-3 bridge
• Gigabit Ethernet connectivity over SDH/SONET networks
• Standard GFP encapsulation
• Fault propagation to LAN link
• Inband and out-of-band management for configuration, monitoring and diagnostics
• I2C management interface for simple management integration with host devices

QUALITY OF SERVICE – QOS

For prioritizing user traffic, MIRICi-155 features up to four separate queues. The queues handle traffic with different services based on VLAN priority (802.1p), which enables to map the 8 priority levels of VLAN to 4 traffic classes.

SDH/SONET TIMING OPTIONS

The user can define the following SDH/SONET clock sources:

• Internal
• Recovered from STM-1/OC-3 interface

ENCAPSULATION

MIRICi-155 uses standard GFP encapsulation according to ITU-T G.7041/Y.1303 requirements.

FLEXIBILTY

MIRICi-155 operates with the following devices using standard encapsulation:

• RAD’s RICi-155GE (Central Ethernet gateway)
• RAD’s FCD-155E
• Third-party devices that employ standard GFP encapsulation

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