2H22-08R Overview; Auto-Negotiation - Cabletron Systems 2208 User Manual

1.3

2H22-08R OVERVIEW

The 2H22-08R is a Fast Ethernet standalone device that has six RJ45
switched ports and two optional Fast Ethernet Interface Module ports
(100BASE-TX, 100BASE-FX, and 100BASE-F3) that provide twisted
pair, multimode, and single mode fiber optic cabling connectivity.
PWR
CPU
2H22-08R
RESET
COM
The 2H22-08R supports traditional IEEE 802.1d switching (bridging),
IEEE 802.Q switching, and Cabletron Systems S
Virtual Network technology. The 2H22-08R is used to connect individual
high-bandwidth user devices, such as workstations, and provide a central
switching point for multiple 10/100 Mbps Fast Ethernet segments.
1.3.1

Auto-Negotiation

Twisted Pair ports on the 2H22-08R can auto-negotiate the type of
connection required to provide a link to another device. During
Auto-Negotiation, two devices automatically exchange information
concerning their operating capabilities. The Auto-Negotiation feature
targets the maximum capabilities between the two devices. For example,
the 2H22-08R adjusts to 100 Mbps when the device on the other end of
the connection can adjust between 10 Mbps or 100 Mbps. If the device on
the other end of the connection can only operate at 10 Mbps, then the
2H22-08R adjusts to 10 Mbps operation.
When Auto-Negotiation is supported at both ends of a link, the two
devices dynamically adjust to full or half duplex operation based on the
maximum capability that can be reached between the two devices. If the
device connected to the 2H22-08R cannot auto-negotiate, the 2H22-08R
interface operates according to the capabilities of the other device.
2H22-08R SmartSwitch 2208 User's Guide
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Figure 1-1 The 2H22-08R
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ECURE
2H22-08R Overview
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8
F Switching
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