% Warning: The following users are currently configuring the system:User "" on line console0User "admin" on line vty0 ( 123.12.1.123 )User "admin" on line vty1 ( 123.12.1.123 )User "Irene" on line vty3 ( 123.12.1.321 )Dell#confWhen another user enters CONFIGURATION mode, Dell Networking OS sends a message similar to the following:% Warning: User "admin" on line vty2 "172.16.1.210" is in configurationIn this case, the user is “admin” on vty2.Obtaining HelpAs soon as you are in a Command mode, there are several ways to access help:To obtain a list ofkeywords at anycommand mode:Type a ? at the prompt or after a keyword. There must always be a space before the ?.To obtain a list ofkeywords with abrief functionaldescription:Type help at the prompt.To obtain a list ofavailable options:Type a keyword, and then enter a space and a ?.To obtain a list ofpartial keywordsusing a partialkeyword:Type a partial keyword, and then enter a ?.Example The following is an example of entering ip ? at the prompt:Dell(conf)#ip ?access-list Named access-listas-path BGP autonomous system path filtercommunity-list Add a community list entrycontrol-plane Control plane configurationdhcp DHCP configuration commandsdomain-list Domain name to complete unqualified host namedomain-lookup Enable IP Domain Name System hostname translationdomain-name Define the default domain nameecmp Weighted Ecmp Configurationecmp-group ECMP Group Configurationextcommunity-list Add a Extended community list entryftp FTP configuration commandshelper-address DHCP relay agent configurationhost Add an entry to the ip hostname tablehttp HTTP configuration commandsicmp ICMP configuration commandsigmp Internet Group Management Protocolmax-frag-count Max. fragmented packets allowed in IP re-assemblymroute Multicast routes and countersmsdp Multicast source discovery protocolmulticast-limit Max entries in Multicast TIBmulticast-msdp Enable IP multicast MSDP protocolmulticast-routing Enable IP multicast forwardingname-server Specify addess of name server to usepim Protocol Independent Multicastprefix-list Build a prefix listradius Interface configuration for RADIUSredirect-list Named redirect-listroute Establish static routesroute-export Export routesroute-import Import routesscp SCP configuration commandssource-route Process packets with source routing header optionsssh SSH configuration commandstacacs Interface configuration for TACACS+CLI Basics 43