Create an EVC
This section details the following information:
• Definition of an EVC
• EVC guidelines
• Steps for creating an EVC
• Steps for configuring an EVC
• EVC example
EVC Definition
The Metro Ethernet Forum (MEF) defines an EVC as "an association of two or more UNIs,"
where a UNI is a standard 10/100/1000 Ethernet interface that is the point of demarcation
between the Customer Equipment (CE) and the Metro Ethernet Network (MEN) of the service
provider. In simple terms, an EVC performs two functions.
• Connects two or more subscriber sites (UNIs) enabling the transfer of Ethernet service
• Prevents data transfer between the subscriber sites that are not part of the same EVC
This capability enables an EVC to provide data privacy and security similar to a Frame Relay
or ATM Permanent Virtual Circuit (PVC).
Multiple EVCs can reside on a common bonding group or Ethernet port. Each EVC typically
has an associated EVC VLAN tag whose VLAN ID is unique among other EVCs in the MEN.
The EVC VLAN tag allows the EVC to be identified and separated from other EVCs.
At a minimum, two items must be set up for the EVC: the MEN port it will use and the S‐tag it
will use.
NOTE
The S‐tag must match the EVCs configured at the Total Access 5000.
EVC Guidelines
To ensure valid provisioning, enforce the following guidelines when creating an EVC:
• An EVC is applied only if the status is Running (as indicated in the show evc output),
• Two EVCs are considered to be duplicate if they both have the same values for the
• No two EVCs can have the same name
• If the system is managed through a VLAN on a designated bonding group or Ethernet
65K510DEP08-1A
frames
which indicates that the conditions are valid
following attributes:
– MEN port
– S‐tag
port, the S‐tag value for the EVC cannot equal the management VLAN ID
Section 6, EoTDM Provisioning - Create an EVC
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