Create An Evc Cross Connect; Create An Evc Cross Connect; Evc Definition; Evc Cross Connect Guidelines - ADTRAN Total Access 5000 Deployment Manual

Total Access 5000 Business Services Deployment Guide

Create an EVC Cross Connect

This subsection details the following information:
• Definition of an EVC
• Guidelines for creating an EVC
• Steps for creating an EVC

EVC Definition

An EVC is a logical entity that provides a means for connecting two endpoints in the Total
Access 5000 and provides a path for Ethernet frames with a particular VLAN ID within the
Total Access 5000. The EVC cross‐connects two endpoints and provides the mechanism by
which an S‐tag path is created in the system. The S‐tag corresponds to the VLAN ID. For
example, in the EoCu application an EVC cross‐connect is created between a physical network
port and a logical EFM bonding group. Traffic entering the network port on the selected S‐tag
is sent by the GigE SM to the 32‐Port SHDSL EFM containing the bonding group and then
forwarded to the bonding group by the module.
In the Total Access 5000, customer traffic switches throughout the system via S‐tags
(outermost VLAN tag on an Ethernet packet). Downstream traffic enters the system through
the network ports on the GigE SM and is S‐tag switched to the appropriate slot. The 32‐Port
SHDSL EFM then decides how to send that traffic to the customer. Upstream traffic is
switched to the network in a similar manner.
NOTE
If the NetVanta 838 management VLAN differs from the GigE SM
management VLAN, create a cross connect for the GigE SM to pass the
NetVanta 838 management traffic. When creating a cross connect, set up the
cross connect with an S‐tag equal to the NetVanta 838 management VLAN,
pointing to the appropriate EFM Group.

EVC Cross Connect Guidelines

When creating a cross‐connect, enforce the following guidelines:
• An EVC cannot be part of another cross‐connect
• Each EVC must have a unique S‐tag
Table 4‐6 displays the available S‐tags in the Total Access 5000.
S-tag
0, 1, 4095
2 – 4094
3072
4-14

Table 4-6. Available S-tag Range

Function
Reserved
EVPLs and Inband Management VLAN
Internal Management VLAN (Default)
65K510DEP08-1A