Understanding the Creation of Ethernet Services

This article presents the creation of E-Line, E-LAN and E-Tree services. It also explains how to configure some of the service attributes for the created services, such as bandwidth profiles, CoS mapping and Layer-2 control protocol processing options. For information on monitoring performance, refer to the following articles:

• "Monitoring Network Performance with Ethernet OAM"
• "Monitoring Network Performance with Service OAM"

The services you can create are:

Ethernet Service Mapping: Create E-Line, E-LAN and E-Tree services by mapping traffic to an Ethernet Virtual Connection (EVC). You can also specify, per-circuit, any combination of the following:

• VLAN tagging: adds a C-VLAN or S-VLAN tag to the frame (selective push)
• CoS mapping: sets PCP (C-VLAN, S-VLAN priority) value based on DSCP, IP Precedence or PCP
• Bandwidth policing: sets rate limiting based on the bandwidth profile defined for the selected flow (CIR, EIR, CBS or EBS)

Learn more about setting up ethernet services here.

You can also explore managing Virtual Connection endpoints here.

Bandwidth Policing (also referred to as Rate Enforcement or Bandwidth Regulation):
Bandwidth profiles, which are defined by the values of their associated parameters (CIR, CBS, EIR, EBS, CM and CF), are enforced via a token bucket algorithm according to Technical Specification MEF 10.2. Bandwidth profiles can be used to offer bandwidth to your client according to predefined SLAs. The Bandwidth policing assures SLAs by regulating committed and excess information throughput, per flow: upstream and down.

Token Bucket Algorithm for Bandwidth Profile

Bandwidth profiles can be specified as follows:

• Bandwidth Profiles Per Ingress UNI
• Bandwidth Profiles Per EVC
• Bandwidth Profiles Per CoS ID

Bandwidth Profile Types

Traffic Filtering: Filters can be defined to classify traffic based on any combination of the following frame characteristics:

• VLAN ID
• PCP value
• DSCP value
• IP precedence value

The filtered traffic can be either dropped or sent for service mapping, CoS mapping and/or bandwidth policing.