Eaton Power Xpert PXES4P Series Installation And User Manual

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user guide

PXES4P Switches Installation and User Guide (10/06)40Switching, Address LearningThe PXES4P Series units have address table capacity of 2K node addresses, andare suitable for use in large networks. They are self-learning, so that as nodes are added orchanged, the PXES4P Series automatically keeps up with node locations.An address-aging algorithm causes least-used addresses to fall out in favor of newfrequently-used addresses. To reset the address buffer, cycle power down-and-up.4.2 Auto-cross (MDIX), Auto-negotiation and Speed-sensingThe RJ-45 ports support auto-cross (MDI or MDIX) in the auto-negotiationmode according to the IEEE 802.3u standard. No crossover cables are needed whenconnecting the PXES4P to other unmanaged switches, legacy hubs, managed switches,media-converters etc. Please note that there can be conditions with managed switcheswhere the switch manager fixes the port settings via software, and the result of theauto-negotiation is changed in the managed switch by the manager commands. In suchPXES4P Switches Installation and User Guide (10/06)41cases, the 10/100 speed or the F/H mode may be affected, but auto-cross in thePXES4P Switches will still work. The auto-cross function cannot be disabled.When an RJ-45 cable connection is made, and each time LINK is enabled,auto-negotiation takes place (except for legacy products, which do not have auto-negotiation and which go to the default state accordingly). The Switch advertises itscapability for 10 or 100 Mbps speed and F/H duplex mode, and the device at the otherend of the cable should similarly advertise / respond. Both sides will agree to the speedand mode to be used per the IEEE 802.3u standard. Depending upon the devicesconnected, this will result in agreement to operate at either 10 Mbps or 100Mbps speed,and full- or half-duplex mode.4.3: Dual LEDs, Front-panel and side-panel (PXES4P Series)LED DescriptionPWR Illuminates GREEN to indicate power applied.PXES4P Switches Installation and User Guide (10/06)42LK/ ACT Steady ON for LINK w/no traffic, blinking for activity per port. LINK will turnoff in the event connectivity is lost between the ends of the twisted pair segmentor a loss of power occurs in the unit or remote device. The Link ports are alsorepresented by LA1, LA2, LA3, & LA4. (Steady On or steady Off indicates noReceive Activity).10/100 Steady ON for 100Mb speed, OFF for 10Mb speed per portF/H Steady ON for Full duplex mode, OFF for half duplex per port

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