Magnum ITS
Blade
Hardened Switches for 2070’s Installation and User Guide (02/03)
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Typical Model 2070 Chassis, rear view
4.0
OPERATION- the function and operation of the Magnum ITS Blade
Switches.
4.1
Dual-Speed Functionality, and Switching
The Magnum ITS
Blade
Hardened Switch provide six 10/100 RJ-45
switched ports, and two 100Mb fiber ports. The architecture supports a dual speed-switching
environment, with two built-in full-duplex “future-proof” fiber ports. The six RJ-45 copper ports
equipped with auto-negotiation capability.
The switched RJ-45 ports are full / half duplex and auto-sensing for speed. (See
section 2.2). When the connected device is 10 Mbps, the ITS
Blade
obeys all the rules of 10
Mbps Ethernet configurations. The 10 Mbps users share a 10 Mbps 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 10Mb domain too.
All Magnum ITS
Blade
s 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
RJ-45 switched RJ-45 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 ITS
Blade
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.
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