INTRODUCTION
1
1 INTRODUCTION
1. 1 About the WC3445
The Metrodata WC3445 is a four port auto sensing 10/100BaseT Ethernet Switch with a bit-
switch selectable E3/DS3 Uplink. The product can be used to extend four LAN ports across
a WAN link to a remote site. Each LAN port may be connected to a single LAN workstation
or to a hub or switch supporting multiple workstations. The exact configuration will depend
upon the user’s network design and workload characteristics.
The WC3445 Ethernet Switch can switch between local LANs connected to its four ports,
and the unit may thus reduce the need for local LAN hubs and switches. The Ethernet switch
has full wirespeed filtering so that the WAN port carries only traffic destined for the remote
WAN-linked site, and an efficient HDLC encapsulation of packets ensures maximum
throughput over the WAN link. There is internal packet buffering to smooth out bursty traffic.
WC3445’s are used in pairs, one on either side of a WAN link.
Figure 1. 1 WC3445 installation
WAN
