Managed Carrier Ethernet Service Demarcation: MetroCONNECT


Telecommunications Carriers often require to deliver Layer-2 Ethernet circuits as an infrastructure either for high-capacity IP VPN networks or indeed for Layer-2 VPN or VPLS-based services.

Customers increasingly demand stringent 'Service Level Agreements' (SLAs) which go beyond the conventional lead-time, availability and maintenance conditions and now include characteristics of the infrastructure itself, such as Committed Information Rate (CIR), Packet-Loss Ratio (PLR), Delay (or 'latency') and Delay Variation (or 'jitter'). In order to ensure end-to-end visibility and monitoring of such characteristics, Carriers and Ethernet Service Providers generally deploy Managed 'Ethernet Demarcation Devices' (EDDs).

Typical features of such devices include:

  • Management visibility to LAN and WAN connection state at the customer site
  • VLAN support using 802.1Q, including Q-in-Q stacked VLANs
  • Quality of service using 802.1p VLAN prioritisation with traffic policing and shaping
  • Service monitoring using 802.3ah EFM and 802.1ag CFM
  • Circuit Activation Testing using RFC2544 and Y.1564
  • In-service performance measurement Vs. SLA using Y.1731 and/or TWAMP

Some typical Ethernet Network Deployment examples using Managed Demarcation devices

MetroCONNECT Carrier Ethernet Demarcation Devices

Carrier Ethernet Demarcation

Metrodata offers a range of Ethernet Demarcation Device with support for these functions, whilst maintaining the lowest possible unit cost:

Our EDD range supports automated fibre fault localisation via integrated OTDR functionality.