Alcatel-Lucent 1643 AMS Applications And Planning Manual page 208

Ethernet Overview
This operation mode support the following features:
• Learning bridges
• Spanning tree
• Additional SDH bandwidth
• Virtual Switch and
• CID (Customer Identifier).
Special case of the LAN-VPN mode
The LAN interconnect mode of operation is a special case of the LAN-VPN operation.
In the LAN interconnect mode a virtual switch may contain LAN and WAN ports of a
single user only.
The TransLAN
the corresponding virtual switches do not include the same WAN ports.
Configuration rules and guidelines
Please observe these configuration rules and guidelines:
• On LAN ports the CID needs to be provisioned manually.
The permitted CID value range is [0 { 4094]. However, note that only values out
of the value range [1 { 4094] can be used to identify a user while the value "0"
cannot. The corresponding LAN port is disabled if the CID is set to "0".
• In the LAN interconnect mode, the virtual switch is dedicated to a single customer.
Therefore, all LAN ports of a virtual switch must have the same customer identifier
(CID).
• In the LAN interconnect mode, LAN ports are always customer-role ports, and
WAN ports are always network-role ports (see
LAN-VPN (M-LAN) mode
Under the LAN-VPN (Virtual Private Network) operation mode, a number of LAN-
and WAN ports are grouped together to form one virtual switch. The Virtual Switch
contains LAN ports of multiple end-users sharing the same WAN port(s) bandwidth. To
safeguard each individual end-user's data flow and to identify an end-user's VPN from
the shared WAN, the Ethernet Interface card assigns a CID to each LAN port within a
Virtual Switch. The CID of each end-user (or LAN port) must be unique within a
shared WAN port to create a fully independent VPN. The VPN provisioning on the
WAN ports on the access and intermediate nodes is done automatically by the
proprietary protocol STVRP (Spanning Tree with VPN Registration Protocol) that runs
without operator intervention.
The end-users are assigned bandwidth by the operator. It allows multiple end-users to
share the same SDH WAN bandwidth with each end-user being allocated a
sub-VC-12-Xv (X= 1, 2, 3, 4, 5) or sub-VC-3-Xv (X=1, 2) rate of bandwidth when
using the Fast Ethernet card. The combined end-user bandwidth is then mapped to the
SDH time-slots and transported in the SDH network as a single data load. The
minimum rate that can be configured per end-user at a LAN port is 150 kbit/s. The
operator also specifies a traffic policy for each end-user.
....................................................................................................................................................................................................................................
11-32
®
cards can support both modes of operation simultaneously as long as
Alcatel-Lucent - Proprietary
See notice on first page
"Port provisioning" (p.
Operational modes
11-45)).
365-312-801R7.2
Issue 3, May 2007