Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide, Release 6.x
Basic Device Management
Download this chapter
Basic Device ManagementBasic Device Management
Download the complete book
Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide, Release 6.xCisco MDS 9000 Family NX-OS Fundamentals Configuration Guide, Release 6.x (PDF - 4 MB)
 Feedback

Basic Device Management

This chapter contains the following sections:

Information About Basic Device Management

This section provides information about basic device management.

Device Hostname

You can change the device hostname displayed in the command prompt from the default (switch) to another character string. When you give the device a unique hostname, you can easily identify the device from the command-line interface (CLI) prompt.

Management Interface

The management interface allows multiple simultaneous Telnet or SNMP sessions. You can remotely configure the device through the management interface (mgmt0), but first you must configure some IP parameters so that the switch is reachable. You can manually configure the management interface from the CLI. You can configure the mgmt 0 interface with either IPv4 address parameters or an IPv6 address.

On devices with dual supervisor modules, a single IP address is used to manage the switch. The active supervisor module's mgmt0 interface uses this IP address. The mgmt0 interface on the standby supervisor module remains in an inactive state and cannot be accessed until a switchover happens. After a switchover, the mgmt0 interface on the standby supervisor module becomes active and assumes the same IP address as the previously active supervisor module.

The management port (mgmt0) is autosensing and operates in full duplex mode at a speed of 10/100/1000 Mbps (1000 Mbps is only available on the Supervisor-2 module). Autosensing supports both the speed and the duplex mode. On a Supervisor-1 module, the default speed is 100 Mbps and the default duplex mode is auto. On a Supervisor-2 module, the default speed is auto and the default duplex mode is auto.

Default Gateway

Figure 1. Default Gateway. The supervisor module sends IP packets with unresolved destination IPv4 addresses to the default gateway.



Message-of-the-Day Banner

The message-of-the-day (MOTD) banner displays before the user login prompt on the device. This message can contain any information that you want to display for users of the device.

Device Clock

If you do not synchronize your device with a valid outside timing mechanism, such as an NTP clock source, you can manually set the clock time when your device boots.

Time Zone and Summer Time (Daylight Saving Time)

You can configure the time zone and summer time (daylight saving time) setting for your device. These values offset the clock time from Coordinated Universal Time (UTC). UTC is International Atomic Time (TAI) with leap seconds added periodically to compensate for the Earth's slowing rotation. UTC was formerly called Greenwich Mean Time (GMT).

User Sessions

You can display the active user session on your device. You can also send messages to the user sessions. For more information about managing user sessions and accounts, see the Cisco Nexus Security Configuration guide for your device.

Telnet Server Connection

The Telnet server is disabled by default on all switches in the Cisco MDS 9000 Family. You can enable the Telnet server if you do not require a secure SSH connection. However, if you require a secure SSH connection, you need to disable the default Telnet connection and then enable the SSH connection.


Note

For information on connecting a terminal to the supervisor module console port, refer to the Cisco MDS 9200 Series Hardware Installation Guide or the Cisco MDS 9500 Series Hardware Installation Guide.


Note

The Cisco NX-OS software allows a maximum of 16 sessions on any switch in the Cisco MDS 9500 Series or the Cisco MDS 9200 Series.

Changing the Device Hostname

You can change the device hostname displayed in the command prompt from the default (switch) to another character string.

SUMMARY STEPS

    1.    configure terminal

    2.    {hostname | switchname} name

    3.    exit

    4.    (Optional) copy running-config startup-config


DETAILED STEPS
     Command or ActionPurpose
    Step 1 configure terminal


    Example: 
    switch# configure terminal
switch(config)#
     

    Enters global configuration mode.

     
    Step 2 {hostname | switchname} name


    Example:

    Using the hostname command:

    switch(config)# hostname Engineering1
Engineering1(config)#

    Using the switchname command:

    Engineering1(config)# switchname Engineering2
Engineering2(config)#
     

    Changes the device hostname. The name argument is alphanumeric, case sensitive, and has a maximum length of 32 characters. The default is switch.

    Note   

    The switchname command performs the same function as the hostname command.

     
    Step 3 exit


    Example: 
    Engineering2(config)# exit
Engineering2#
     

    Exits global configuration mode.

     
    Step 4 copy running-config startup-config


    Example: 
    Engineering2# copy running-config startup-config
          		(Optional)

    Copies the running configuration to the startup configuration.

     

    Configuring the Management Interface

    You can manually configure the management interface from the CLI. You can configure the mgmt 0 interface with either IPv4 address parameters or an IPv6 address.


    Note

    You only need to configure the mgmt0 interface on the active supervisor module. When a supervisor module switchover occurs, the new active supervisor module uses the same configuration for the mgmt0 interface.

    Before You Begin

    Establish a connection on the console port.

    SUMMARY STEPS

      1.    configure terminal

      2.    interface mgmt 0

      3.    ip address {ipv4-address subnet-mask | ipv6-address}

      4.    exit

      5.    (Optional) show interface mgmt 0

      6.    (Optional) copy running-config startup-config


    DETAILED STEPS
       Command or ActionPurpose
      Step 1 configure terminal


      Example: 
      switch# configure terminal
switch(config)#
       

      Enters global configuration mode.

       
      Step 2 interface mgmt 0


      Example: 
      switch(config)# interface mgmt 0
switch(config-if)#
       

      Specifies the mgmt0 inteface and enters the interface configuration mode.

       
      Step 3 ip address {ipv4-address subnet-mask | ipv6-address}


      Example: 
      switch(config-if)# ip address 1.1.1.0 255.255.255.0
       

      Configures the IPv4 or IPv6 address on the mgmt 0 interface.

       
      Step 4 exit


      Example: 
      switch(config-if)# exit
switch(config)#
       

      Returns to global configuration mode.

       
      Step 5 show interface mgmt 0


      Example: 
      switch(config)# show interface mgmt 0
              		(Optional)

      Dispalys the mgmt 0 interface information.

       
      Step 6 copy running-config startup-config


      Example: 
      switch(config)# copy running-config 
startup-config
              		(Optional)

      Copies the running configuration to the startup configuration.

       

      Configuirng the Default Gateway

      You can manually configure the management interface from the CLI. You can configure the mgmt 0 interface with either IPv4 address parameters or an IPv6 address.

      Before You Begin

      Establish a connection on the console port.

      SUMMARY STEPS

        1.    configure terminal

        2.    ip default gateway ipv4-address

        3.    (Optional) show ip route

        4.    (Optional) copy running-config startup-config


      DETAILED STEPS
         Command or ActionPurpose
        Step 1 configure terminal


        Example: 
        switch# configure terminal
switch(config)#
         

        Enters global configuration mode.

         
        Step 2 ip default gateway ipv4-address


        Example: 
        switch(config)# ip default-gateway 172.16.1.1
         

        Configures the IPv4 address for the default gateway.

         
        Step 3 show ip route


        Example: 
        switch(config)# show ip route
                  		(Optional)

        Displays the default gataeway configuration.

         
        Step 4 copy running-config startup-config


        Example: 
        switch(config)# copy running-config 
startup-config
                  		(Optional)

        Configures the IPv4 or IPv6 address on the mgmt 0 interface.

         

        Configuring the MOTD Banner

        You can configure the MOTD to display before the login prompt on the terminal when a user logs in. The MOTD banner has the following characteristics:

        • Maximum of 80 characters per line
        • Maximum of 40 lines
        SUMMARY STEPS

          1.    configure terminal

          2.    banner motd delimiting-character message delimiting-character

          3.    exit

          4.    (Optional) show banner motd

          5.    (Optional) copy running-config startup-config


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 configure terminal


          Example: 
          switch# configure terminal
switch(config)#
           

          Enters global configuration mode.

           
          Step 2 banner motd delimiting-character message delimiting-character


          Example: 
          switch(config)# banner motd #Welcome to the Switch#
switch(config)#
           

          Configures the MOTD banner. Do not use the delimiting-character in the message text.

          Note   

          Do not use " or % as a delimiting character.

           
          Step 3 exit


          Example: 
          switch(config)# exit
switch#
           

          Exits global configuration mode.

           
          Step 4 show banner motd


          Example: 
          switch# show banner motd
                      		(Optional)

          Displays the configured MOTD banner.

           
          Step 5 copy running-config startup-config


          Example: 
          switch# copy running-config startup-config
                      		(Optional)

          Copies the running configuration to the startup configuration.

           

          Configuring the Time Zone

          You can configure the time zone to offset the device clock time from UTC.

          SUMMARY STEPS

            1.    configure terminal

            2.    clock timezone zone-name offset-hours offset-minutes

            3.    exit

            4.    (Optional) show clock

            5.    (Optional) copy running-config startup-config


          DETAILED STEPS
             Command or ActionPurpose
            Step 1 configure terminal


            Example: 
            switch# configure terminal
switch(config)#
             

            Enters global configuration mode.

             
            Step 2 clock timezone zone-name offset-hours offset-minutes


            Example: 
            switch(config)# clock timezone EST -5 0
             

            Configures the time zone. The zone-name argument is a 3-character string for the time zone acronym (for example, PST or EST). The offset-hours argument is the offset from the UTC and the range is from –23 to 23 hours. The range for the offset-minutes argument is from 0 to 59 minutes.

             
            Step 3 exit


            Example: 
            switch(config)# exit
switch#
             

            Exits global configuration mode.

             
            Step 4 show clock


            Example: 
            switch# show clock
                          		(Optional)

            Displays the time and time zone.

             
            Step 5 copy running-config startup-config


            Example: 
            switch# copy running-config startup-config
                          		(Optional)

            Copies the running configuration to the startup configuration.

             

            Configuring Summer Time (Daylight Saving Time)

            You can configure when summer time, or daylight saving time, is in effect for the device and the offset in minutes.

            SUMMARY STEPS

              1.    configure terminal

              2.    clock summer-time zone-name start-week start-day start-month start-time end-week end-day end-month end-time offset-minutes

              3.    exit

              4.    (Optional) show clock detail

              5.    (Optional) copy running-config startup-config


            DETAILED STEPS
               Command or ActionPurpose
              Step 1 configure terminal


              Example: 
              switch# configure terminal
switch(config)#
               

              Enters global configuration mode.

               
              Step 2 clock summer-time zone-name start-week start-day start-month start-time end-week end-day end-month end-time offset-minutes


              Example: 
              switch(config)# clock summer-time PDT 
1 Sunday March 02:00 1 Sunday 
November 02:00 60
               

              Configures summer time or daylight saving time.

              The zone-name argument is a three character string for the time zone acronym (for example, PST and EST).

              The values for the start-day and end-day arguments are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday.

              The values for the start-month and end-month arguments are January, February, March, April, May, June, July, August, September, October, November, and December.

              The value for the start-time and end-time arguments are in the format hh:mm.

              The range for the offset-minutes argument is from 0 to 1440 minutes.

               
              Step 3 exit


              Example: 
              switch(config)# exit
switch#
               

              Exits global configuration mode.

               
              Step 4 show clock detail


              Example: 
              switch(config)# show clock detail
                              		(Optional)

              Displays the configured MOTD banner.

               
              Step 5 copy running-config startup-config


              Example: 
              switch# copy running-config startup-config
                              		(Optional)

              Copies the running configuration to the startup configuration.

               

              Manually Setting the Device Clock

              You can set the clock manually if your device cannot access a remote time source.

              Before You Begin

              Configure the time zone.

              SUMMARY STEPS

                1.    clock set time day month year

                2.    (Optional) show clock


              DETAILED STEPS
                 Command or ActionPurpose
                Step 1 clock set time day month year


                Example: 
                switch# clock set 15:00:00 30 May 2008
Fri May 30 15:14:00 PDT 2008
                 

                Configures the device clock.

                The format for the time argument is hh:mm:ss.

                The range for the day argument is from 1 to 31.

                The values for the month argument are January, February, March, April, May, June, July, August, September, October, November, and December.

                The range for the year argument is from 2000 to 2030.

                 
                Step 2 show clock


                Example: 
                switch(config)# show clock
                                  		(Optional)

                Displays the current clock value.

                 
                Related Tasks

                Managing Users

                You can display information about users logged into the device and send messages to those users.

                Displaying Information about the User Sessions

                You can display information about the user session on the device.

                SUMMARY STEPS

                  1.    show users


                DETAILED STEPS
                   Command or ActionPurpose
                  Step 1 show users


                  Example: 
                  switch# show users
                   

                  Displays the user sessions.

                   

                  Sending a Message to Users

                  You can send a message to active users currently using the device CLI.

                  SUMMARY STEPS

                    1.    (Optional) show users

                    2.    send [session line] message-text


                  DETAILED STEPS
                     Command or ActionPurpose
                    Step 1 show users


                    Example: 
                    switch# show users
                                          		(Optional)

                    Displays the active user sessions.

                     
                    Step 2 send [session line] message-text


                    Example: 
                    switch# send Reloading the device is 10 minutes!
                     

                    Sends a message to all active users or to a specific user. The message can be up to 80 alphanumeric characters and is case sensitive.

                     

                    Enabling or Disabling a Telnet Server Connection

                    You can enable or disable the Telnet server connection.

                    SUMMARY STEPS

                      1.    configure terminal

                      2.    [no] feature telnet

                      3.    (Optional) show telnet server

                      4.    (Optional) copy running-config startup-config


                    DETAILED STEPS
                       Command or ActionPurpose
                      Step 1 configure terminal


                      Example: 
                      switch# configure terminal
switch(config)#
                       

                      Enters global configuration mode.

                       
                      Step 2[no] feature telnet


                      Example: 
                      switch(config)# feature telnet
                       

                      Enables the Telnet server connection. Use the no form of the command to disable the Telnet server connection. The default is disabled.

                       
                      Step 3show telnet server


                      Example: 
                      switch(config)# show telnet server
                                              		(Optional)

                      Displays the Telnet server configuration.

                       
                      Step 4copy running-config startup-config


                      Example: 
                      switch(config)# copy running-config
startup-config
                                              		(Optional)

                      Copies the running configuration to the starutup configuration.

                       

                      Verifying the Device Configuration

                      To verify the configuration after bootstrapping the device using POAP, use one of the following commands:

                      Command

                      Purpose

                      show running-config

                      Displays the running configuration.

                      show startup-config

                      Displays the startup configuration.

                      For detailed information about the fields in the output from these commands, see the Cisco Nexus Command Reference for your device.

                      Default Settings for Basic Device Parameters

                      This table lists the default settings for basic device parameters.

                      Table 1  Default Basic Device Parameters

                      Parameters

                      Default

                      MOTD banner text

                      User Access Verification

                      Clock time zone

                      UTC

                      Telnet server

                      Disabled