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Magnum ITS Blade Hardened Switches for 2070's
Packets needed for maintaining the operation of the network (such as occasional multi-cast
packets) are forwarded to all ports.
The Magnum ITS Blade Switch operate 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 Magnum ITS Blade has 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 ITS Blade 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.
4.2
Auto-negotiation and Speed-sensing
All six RJ-45 ports independently support auto-negotiation for speed in 10BASE-T
and 100BASE-TX modes. Operation is according to the IEEE 802.3u standard.
When a RJ-45 cable connection is made, and each time a LINK is enabled, auto-
negotiation takes place. The ITS Blade 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 10 Mbps 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 ITS Blade RJ-45port is connected to a non-negotiating device, it will default to 10 Mbps speed
and half-duplex mode, per the IEEE 802.3u standard).
4.3
Auto-crossover feature on RJ-45 ports
All six RJ-45 ports have the auto-crossover feature. MDI vs. MDIX connections are
automatically sensed and correctly handled. There is no up-link switch on any port. Any RJ-45
port can be connected either to a NIC or to a switch / hub port using standard twisted pair cables.
No crossover cables are required
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Installation and User Guide (02/03)
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