Features 17FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\UserGuide\Dell_Astute_Features.fmD E L L C O N F I D E N T I A L – P R E L I M I N A R Y 8 / 9 / 1 6 - F O R P R O O F O N L YThe devices enhance auto-negotiation by providing port advertisement. Portadvertisement enables the system administrator to configure the port speedsthat are advertised.For more information, see Network Administration: Port Settings .MDI/MDIX SupportStandard wiring for end stations is known as Media-Dependent Interface(MDI), and standard wiring for hubs and switches is known as Media-Dependent Interface with Crossover (MDIX).If auto-negotiation is enabled, the device automatically detects whether thecable connected to an RJ-45 port is MDIX (crossed) or MDI (straight). Thisenables both types to be used interchangeably.If auto-negotiation is disabled, only MDI (straight) cables can be used.For more information, see MDI/MDIX .MAC Address Capacity SupportMAC Address Capacity SupportAll SKUs support up to 16K MAC addresses except for the X4012 thatsupports 32K addresses. They reserve specific MAC addresses for system use.For more information, see Address Tables .Static MAC EntriesMAC entries can be manually entered in the Bridging Table, as an alternativeto learning them from incoming frames. These user-defined entries are notsubject to aging and are preserved across reset to reboots.For more information, see Address Tables .Self-Learning MAC AddressesThe device enables controlled MAC address learning from incoming packets.The MAC addresses are stored in the Dynamic Address Table.For more information, see Address Tables .