49 System Time and Date...............................................................................................724Network Time Protocol.................................................................................................................................................. 724Protocol Overview....................................................................................................................................................725Configure the Network Time Protocol......................................................................................................................725Enabling NTP........................................................................................................................................................... 725Configuring NTP Broadcasts....................................................................................................................................726Disabling NTP on an Interface.................................................................................................................................. 726Configuring a Source IP Address for NTP Packets................................................................................................... 726Configuring NTP Authentication...............................................................................................................................727Dell Networking OS Time and Date................................................................................................................................ 729Configuration Task List ............................................................................................................................................ 729Setting the Time and Date for the Switch Software Clock.......................................................................................730Setting the Timezone............................................................................................................................................... 730Set Daylight Saving Time..........................................................................................................................................730Setting Daylight Saving Time Once........................................................................................................................... 731Setting Recurring Daylight Saving Time.................................................................................................................... 73150 Tunneling ..................................................................................................................733Configuring a Tunnel.......................................................................................................................................................733Configuring Tunnel Keepalive Settings............................................................................................................................734Configuring a Tunnel Interface........................................................................................................................................734Configuring Tunnel allow-remote Decapsulation............................................................................................................. 735Configuring Tunnel source anylocal Decapsulation..........................................................................................................735Guidelines for Configuring Multipoint Receive-Only Tunnels...........................................................................................736Multipoint Receive-Only Type and IP Unnumbered Interfaces for Tunnels......................................................................73651 Upgrade Procedures...................................................................................................737Get Help with Upgrades................................................................................................................................................. 73752 Virtual LANs (VLANs)............................................................................................... 738Default VLAN................................................................................................................................................................. 738Port-Based VLANs.........................................................................................................................................................739VLANs and Port Tagging................................................................................................................................................ 739Configuration Task List................................................................................................................................................... 740Creating a Port-Based VLAN....................................................................................................................................740Assigning Interfaces to a VLAN................................................................................................................................. 741Moving Untagged Interfaces.................................................................................................................................... 742Assigning an IP Address to a VLAN.......................................................................................................................... 743Configuring Native VLANs..............................................................................................................................................743Enabling Null VLAN as the Default VLAN....................................................................................................................... 74453 Virtual Link Trunking (VLT)........................................................................................ 745Overview........................................................................................................................................................................745VLT on Core Switches.............................................................................................................................................. 746Enhanced VLT.......................................................................................................................................................... 74625
