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VHSIM-G02 User’s Guide 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems
VHSIM-G02 User’s Guide
. This
manual describes the VHSIM-G02 and provides information concerning
features, installation, troubleshooting, information on Local Management,
and specifications for the VHSIM-G02 (Very High Speed Interface
Module).
A general working knowledge of IEEE 802.3z (Gigabit Ethernet),
IEEE 802.3ab (Gigabit Copper) and IEEE 802.3x (Flow Control and
Auto-Negotiation) data communications networks and their physical
layer components is helpful when installing the VHSIM-G02.
The VHSIM-G02 can be installed into compatible Cabletron Systems
2000 and 6000 series products.
The VHSIM-G02 (Figure 1-1) has two ports that provide Gigabit
Ethernet connections. There are two possible modes of operation for the
VHSIM-G02. In mode one, both ports are active and transmit/receive data
simultaneously. This mode can only be selected if the host platform has
16 or less fixed front panel ports. In mode two, one port is active and the
other is redundant. Redundancy is triggered based on link activity; if port
one loses link then port two becomes active. Port one is active by default.
The default mode for the VHSIM-G02 is redundancy.
Figure 1-1 VHSIM-G02
NOTE
The term “host platform” may be used to refer to the module or
standalone device in which the VHSIM-G02 is installed.
25491_01
Gigabit Ethernet Ports
VHSIM-G02
1 2