The integration of CWDM and DWDM SFPs eliminates the need for a transponder on the network, and offers better fiber optimization along
physical services separation with dedicated Gigabit rate for premium optical services with the same concept of legacy “leased-line” services.
VPN Services & Protection
Compliant to MEF Ethernet Virtual Circuit (EVC), the OS900 can offer three types of VPNs:
1. Layer 1 Optical VPN – a cross-connect mode with transparent mode (no MAC learning)
2. Layer 2 VPN – VLAN-based tunneling Q-in-Q stacking, swapping or mapping services
3. Layer 2.5 VPN – a label-based MPLS VC for direct connection into MPLS domains or H-VPLS MTU-s
All the above VPN services can be fully protected using port redundancy, dual-homing, and/or ring topology with a recovery time of less than 50 ms.
In addition to L2 VPN, the OS900 can offer integrated IP router services to save the costs of an external router and provides a single demarcation
platform for managed L2 VPN and IP services.
Traffic Management
The OS900 enables a value-added network infrastructure, with end-to-end per flow QoS.
It supports full CoS and QoS (MEF 14 model) including flows classification, rate limiting, shaping, WFQ scheduling, and strict priority for lower
delay/jitter and guaranteed throughput in real-time applications. In addition, it enables dynamic/adaptive buffer pools to prevent bursty traffic
starvation and ensure queuing resources effectiveness.
For network convergence applications that have a clear boundary between customer’s and carrier’s networks, CoS layers (802.1p, IP ToS & MPLS
EXP bits) can be mapped/marked to preserve priorities or map them into predefined protection profiles set by the carrier.
Hierarchical QoS – CoS-Aware rate limit
Defining premium SLAs is a key fundamental for service differentiation.
The OS900 enables traffic management based on innovative CoS-aware rate limit to dynamically reuse bandwidth profiles. Dynamic QoS is an
important feature that allows for sharing defined rate limited flows with aggregate profile applied to a user network interface or an Ethernet
Virtual Circuit. In the new service offering, the consolidated real-time, high-priority and best effort data require different rates and marked class
of service. Dynamic QoS helps to share/borrow the bandwidth that was allocated for real-time or high priority applications at a time when these
services are not active. Such an offering contributes to a more efficient way of provisioning bandwidth at the access/demarcation of the network
without complex configuration sets at the aggregation layer.
Denial of Service (DoS) protection
The OS900 incorporates multilayer DoS protection at the hardware architecture on the CPU control plane and data-switching plane. The
multilayer control protects the service and the device functionality from hostile traffic without degradation of service performance or affecting
of the forwarding database or CPU availability. Multiple traffic types can be policed or discarded starting from frame level such as broadcast,
multicast up to IP/TCP/UDP layers.
Management
The OS900 Series control plane incorporates a list of highly manageable feature that offers ensured interaction with carrier’s OSS and NMS
platforms, based on industry standard Southbound out-of-band or in-band interfaces. In addition, it can be managed via MRV’s MegaVision-Pro
NMS to have complete GUI and Northbound gateway (XML, TL1 & SNMP) of an entire map of clustered devices for configuration, performance
analysis, and inventory control.
For the service providers, the OAM that is provided by a demarcation device determines to a significant extent the metrics that can be used to
establish the SLA with a business subscriber. The OS900 incorporates enhanced standards compliant MEF OAM and gives the service provider
the ability to monitor the network and provision services, and promptly determine the location of faults remotely from the network operation
center.
Ethernet OAM with IEEE802.1ag & ITU-T Y.1731
The connectivity of Ethernet bridge devices across Metro Ethernet or
other transport networks creates dedicated or virtual Ethernet circuits. An
end-to-end service architecture requires administrative domain hierarchy
with corresponding OAM enabled titles. The OS900 Series incorporate
connectivity, discovery and fault management along performance statistics
of delay, jitter and frame loss for demarcation and intermediate points of
service.
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Ethernet loopbacks
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The OS900 Series offers remote loopback functionality on a physical
interface or a specific VLAN that traverses UNI or NNI interfaces. The
loopback function allows for the troubleshooting of the service,
remotely, from NOC, or any other manageable location without
needing to actually visit the customer premises. Loopback functionality
performed in hardware level for performance monitoring and SLA
verification in wire-speed.
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Copper TDR
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The OS900 incorporates copper TDR that can identify problems with
CAT5 copper cables on a customer’s site such as opens, shorts and
wrong impedance.
Optical Performance Level Monitoring (Digital Diagnostics)
The OS900 Series supports the SFP Digital Diagnostics standard (as per SFF-8472). A powerful OPM tool, it provides access to a number of real-time SFP
operating parameters such as optical TX/RX power, voltage and temperature, as well as component information such as vendor code, serial number and
wavelength. The information provided by Digital Diagnostics, together with alarm and warning thresholds, enables a network administrator to identify
potential problems in optical transmission and take preemptive action before any service outage actually occurs.
Per-service performance monitoring
The OS900 offers real-time and historical reporting on various service performance metrics, including port/VPN-EVC utilization, transmission
errors, and QoS threshold exceptions.
MRV [ MRV COMMUNICATIONS, INC. ]
