Features of the Nortel Ethernet Routing Switch 4500 Series 131The syntax of this command isdefault stack auto-unit-replacement-image enableRun the default stack auto-unit-replacement-image enablecommand in Global Configuration command mode.show stack auto-unit-replacement-image commandUse the show stack auto-unit-replacement-image command toview the current status of the AAUR functionality.The syntax of this command isshow stack auto-unit-replacement-imageRun the show stack auto-unit-replacement-image command inUser EXEC command mode.Features of the Nortel Ethernet Routing Switch 4500 SeriesThe Nortel Ethernet Routing Switch 4500 Series provides wire-speedswitching that enables high-performance and low-cost connections tofull-duplex 10/100/100 and half-duplex 10/100 Mb/s Ethernet Local AreaNetworks (LAN).This section describes the general features of the Nortel Ethernet RoutingSwitch 4500 Series.Flash memory storageSwitch software image storageThe Nortel Ethernet Routing Switch 4500 Series uses flash memory to storethe switch software image.You can update the software image with a new version from flash memory.You must have an in-band connection between the switch and the TFTPload host to the software image.Configuration parameter storageAll configuration parameters in the Nortel Ethernet Routing Switch 4500Series are stored in flash memory.These parameters are updated every 60 seconds if a change occurs, orupon execution of a reset command.Note: Do not power off the switch within 60 seconds of changing anyconfiguration parameters.Nortel Ethernet Routing Switch 4500 SeriesOverview — System ConfigurationNN47205-500 02.01 Standard5.0 23 February 2007Copyright © 2007, Nortel Networks Nortel Networks Confidential.