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 or more endpoints and provides the
mechanism by which an S‐tag path is created in the system. The S‐tag corresponds to the
VLAN ID.
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 GE 8‐Port
LM 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 8044 management VLAN differs from the GigE SM
management VLAN, create an EVC for the GigE SM to pass the NetVanta
8044 management traffic. When creating a cross connect, set up the cross
connect with an S‐tag equal to the NetVanta 8044 management VLAN,
pointing to the appropriate appropriate GigE 8‐Port LM port.

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 7‐3 displays the available S‐tags in the Total Access 5000.
S-tag
0, 1, 4095
2 – 4094
3072
7-6

Table 7-3. Available S-tag Range

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