WATERS NETWORK SYSTEMS
ProSwitch-Xtreme Operating Manual
Page 9
6.0 OPERATION
6.1
Dual-Speed Functionality and Switching
The ProSwitch-Xtreme Ethernet switch provide six 10/100 RJ45 switched ports, and two 100Mbps fiber ports.
The architecture supports a dual-speed switching environment, with two built-in full-duplex “future-proof” fiber ports.
The six RJ45 copper ports equipped with auto-negotiation capability.
The switched RJ45 ports are full/half duplex and auto-sensing for speed. (See section 2.2). When the
connected device is 10Mbps, the ProSwitch-Xtreme obeys all the rules of 10Mbps Ethernet configurations. The
10Mbps users share a 10Mbps traffic domain, and can “communicate with” 100Mbps users as well as 100Mbps
domain. Similarly, the 100Mbps traffic obeys the rules of 100Mbps Ethernet, and can communicate with 10Mbps
domain too.
All ProSwitch-Xtreme units are plug-and-play devices. There is no software configuration to be done at
installation or for maintenance. The half/full duplex mode for the RJ45 switched RJ45 ports is user dependent and
changes (by auto-negotiation) to full or half duplex as the unit attached with these ports. The internal functions of the
ProSwitch-Xtreme are described below.
Switching, Filtering and Forwarding
Each time a packet arrives on one of the switched ports, the decision is taken to either filter or to forward the
packet. Packets whose source and destination addresses on the same port segment will be filtered, constraining
them to one port and relieving the rest of the network from processing them. A packet whose destination address is
on another port segment will be forwarded to the appropriate port, and will not be sent to the other ports where it is
not needed. Packets needed for maintaining the operation of the network (such as occasional multi-cast packets) are
forwarded to all ports.
The ProSwitch-Xtreme Ethernet switch operates in the store-and-forward switching mode, which eliminates
bad packets and enables peak performance to be achieved when there is heavy traffic on the network.
Switching, Address Learning
The ProSwitch-Xtreme units have address table capacity of 16K node addresses, and are suitable for use in
large networks. They are self-learning, so that as nodes are added or removed or moved from one segment to
another, the ProSwitch-Xtreme automatically keeps up with node locations.
An address-aging algorithm causes least-used addresses to fall out in favor of new frequently used addresses.
To reset the address buffer, cycle power down-and-up.
6.2
Auto-negotiation and Speed-sensing
All six RJ45 ports independently support auto-negotiation for speed in 10BASE-T and 100BASE-TX modes.
Operation is according to the IEEE 802.3u standard.
When an RJ45 cable connection is made, and each time a LINK is enabled, auto-negotiation takes place. The
ProSwitch-Xtreme advertises its capability for 10 or 100 Mbps speed, and the device at the other end of the cable
should similarly advertise/respond and both sides will agree to the speed being used. Depending upon the device
connected, this will result in agreement to operate at either 10Mbps or 100Mbps speed.
When the ‘
LK/ACT’
LED is ON, steady ON indicates LINK with no traffic, blinking ON indicates the port is
transmitting/receiving. The port has auto-negotiated for operation. (If a ProSwitch-Xtreme RJ45port is connected to a
non-negotiating device, it will default to 10Mbps speed and half-duplex mode, per the IEEE 802.3u standard).
LED’s:
POWER:
Illuminates GREEN, steady on when power applied.
SELF TEST:
Indicates the self-test at power up was not successful.
F/H:
ON = Full-Duplex and Link, OFF = Half-Duplex and / or no Link.
LK/ACT:
Per port, steady ON for LINK with no traffic, blinking indicates port is transmitting and receiving.
10/100:
Per port, ON = 100Mbps; OFF = 10Mbps (when LINK is made).
7.0 TROUBLESHOOTING
All Waters’ switching products are designed to provide reliability and consistently high performance in all
network environments. The installation of Waters’ Xtreme switch is a straightforward procedure discussed in this
manual. Should problems develop during installation or operation, this section is intended to help locate, identify and
correct these types of problems. Please follow the suggestions listed below prior to contacting your supplier.
However, if you are unsure of the procedures described in this section or if the ProSwitch
- Xtreme switch is not
performing as expected, do not attempt to repair the unit; instead contact your supplier for assistance or contact
Waters Network Systems’ Customer Support Center at 800.328.2275 or email
.
