INTRODUCTION
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1 INTRODUCTION
The Metrodata MetroLAN is a family of products which provide SDH access multiplexer
functionality. There are currently two products available:
MetroLAN-1000
which offers SDH STM-1 transport of up to 8 10/100BaseT ports, 8 E1/T1
ports
MetroLAN-2000
which additionally offers the transport of up to 3 E3/DS3 Ports.
The MetroLAN offers a transparent bridged connection over the SDH network. Transport of
LAN traffic utilises GFP for encapsulation of the LAN MAC frames and through VCAT
enables efficient bandwidth allocation through the use of multiple VC-12 tributaries. When
enabled, LCAS provides further flexibility by ensuring that failed VCAT tributaries are
seamlessly removed and restarted once the fault has been cleared. Up to 8 10/100BaseT
LAN ports may be connected.
Transport of E1/T1 traffic utilises asynchronous mapping of E1 or T1 into a single VC-12
tributary. The MetroLAN treats the E1/T1 as unframed passing the entire circuit
transparently. Up to 8 E1/T1 ports may be connected. Each E1/T1 port may be individually
selected for E1 or T1 operation.
Transport of E3/DS-3 traffic is available only on the MetroLAN-2000 product, and is achieved
through asynchronous mapping into a single VC-3 tributary. The MetroLAN treats the E3/
DS-3 as unframed, passing the entire circuit transparently. Up to 3 E3/DS-3 ports may be
connected. Each E3/DS-3 port may be individually selected for E3 or DS-3 operation.
The MetroLAN provides extensive configuration options to ensure inter operability with other
vendor equipment, and through comprehensive alarm reporting and performance monitoring
enables quick and easy diagnosis of network problems. Management of the MetroLAN may
be either local using a VT100 terminal or remotely over the LAN Management port using
either Telnet or SNMP. Further management options include the SDH overhead data link
management channels.
Summary of Contents for MetroLAN-1000
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