LIB-4400/4424 Installation Guide
| MANUAL Page 17 of 65
Typical Applications
The LIB-4xxx can be used to implement the access and first-level aggregation functions between
CPE (Customer Premise Equipment) and PE (Provider Edge) boxes. Environments can include:
• Metro Ethernet transport (MSPP/MSTP)
• Carrier Ethernet switch/router (CESR)
• Mobile wireless backhaul
The figure below shows CPE and PE equipment placed in a ‘typical’ network.
Figure 2: LIB-4400 Deployment
In this application, the LIB-4xxx forms the demarcation between the customer network and the
provider network, providing the full set of UNI features in a cost-effective manner.
• Map customer frame formats into provider frame formats. Classify frames and map to
appropriate QoS profiles.
• Meter the customer traffic and ensure that the customer SLA is met. Police using MEF-
compliant dual leaky-bucket algorithm. Mark frames as either Committed (green) or
Discard Eligible (yellow). Provide correct QoS treatment (traffic management). Provide
traffic statistics per customer in a manner consistent with the SLA.
• Enable end-to-end SOAM (Service OAM), if allowed.
• Implement the service defined by the SLA (E-LINE for point-to-point or backhaul service;
E-LAN for multipoint/bridged services; E-TREE for video distribution or backhaul
services).
• Enable management and protection schemes as required by the provider. Link
aggregation or other port schemes if used for access. OAM at the operator and service
provider level for remote management, fault diagnosis, and protection switching.
• Support network timing and synchronization requirements as required. Synchronous
Ethernet (Sync-E) and IEEE 1588 (PTP) functionality.
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