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SmartMetro

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The Nera SmartMetro is a MultiService Provisioning Platform, ideally suited for demanding applications in the core network with carrier class requirements.

The SmartMetro consists of a low-cost shelf (compatible with 19” or ETSI racks) with room for up to twenty-one plug-in modules. The modules consist of a number of different types:

  • Two aggregate modules consisting of TDM matrix, Ethernet Crossbar, System controller and SDH interfaces.
  • Eight tributary modules consisting of a number of SDH, Ethernet and PDH interfaces.
  • Eight connector modules have the physical interface for PDH, SDH and fast Ethernet copper interfaces.
  • Two miscellaneous modules with additional miscellaneous physical interfaces for aggregate modules.
  • The optional fan module has ventilation fans for high temperature environments.
  • In addition there is room for a cable management area that handles both optical fibre and copper cable.

 

Flexibility

  • Easy implementation of new revenue generating services.
  • Control mechanism for fulfilling customer Service Level Agreements - SLA's.
  • Multi-service device with a mix of E1, E3/T3, STM-1/4/16, 10/100/1000 - Ethernet and SAN tributaries.
  • Aggregate speed up to 2,5 Gbit/s. Upgradeable to 10Gbit/s. Support of CWDM

 Protection

  • MSP 1+1
  • SNCP protection in ring, dual parenting or meshed topology.
  • MS-Spring 2-Fibre
  • 1:1 Module protection
  • STP/RSTP

Ethernet/LAN interfaces

  • Ethernet traffic is encapsulated and transported over SDH using Generic Framing Procedure (GFP)
  • Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS)
  • Ethernet bandwidth granularity for 10/100 Mbit/s in 1Mbps steps (1 to 100), and 10 Mbps steps for 1000 Mbit/s by Rate Limiting.

The Layer 2 bridge supports the following features:

  • MAC multicast
  • IGMP snooping
  • IEEE 802.1q VLAN tagging
  • GARP VLAN registration Protocol (GVRP)
  • IEEE 802.1ad Provider Bridge
  • Tunnelling of user traffic (QinQ)
  • Tunnelling of user protocols
  • Rate limitations per port/VLAN
  • Spanning Tree Protocol (STP) in accordance with IEEE 802.1d
  • Rapid Spanning Tree Protocol (RSTP) in accordance with IEEE 802.1w
  • IEEE 802.1p Priorities

Case studies