METRODATA LTD
WCM1100 / WCM3100 / WCM-Serial / LHM1000 / LVM2000 User Manual
76-02-082 Rev N
12 of 169
1 INTRODUCTION
This manual instructs the user in the use of the WCM1100 Managed Ethernet Extender
over E1, WCM3100 Managed Ethernet Extender over E3/DS-3, WCM-Serial Managed
Ethernet Extender over Serial Connections, LHM1000 Managed Ethernet Extender over
HSSI Connections and LVM2000 Managed Ethernet Extender over LVDS Connections.
This guide describes the functionality of Software Release 8.70.
Throughout this document, the term WCM will be used to describe generic functions,
whilst WCM1100, WCM3100, WCM-Serial, LHM1000 and LVM2000 will be used for
product specific areas.
The Metrodata WCM allows for the extension of an Ethernet Service over a Wide Area
Network Connection. The WCM is a managed unit allowing for the effective demarcation
between LAN and WAN services. Management of the WCM is achieved using either
Telnet or SNMP via either the LAN/SFP or WAN ports.
In cases where management is not required, or undesired, the WCM can operate
standalone, with simple configuration options provided using bit switches located on the
underside of the unit.
The Metrodata WCM is a managed, multi port Ethernet Switch with a WAN uplink. The
WCM provides two 10/100/1000BaseT Auto Negotiating, Auto Switching Ports as well as a
single SFP port supporting either 1000Base-X or 100Base-FX SFP modules. The WCM
operates as a layer 2 bridge and as such may be used to extend a LAN segment over a
WAN link.
The WCM has an internal LAN switch offering full wire-speed switching between ports.
The WCM uses MAC address filtering to filter all local traffic and only forward traffic
destined for remote stations. Each of the WCM’s LAN ports support automatic cross-over
switching and will therefore connect directly to a Hub/Switch/Router or PC End Station.
The WCM has support for both tagged and untagged frames, with both VLAN C-Tag, and
Provider Bridge S-Tag (Q-in-Q) modes supported.