Cisco Systems MDS 9020 manual Management Interface Configuration, NTP Configuration

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Chapter 3 Initial Configuration

Management Interface Configuration

Se n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a ck - d o c @ c i s c o . c o m

NTP Configuration

A Network Time Protocol (NTP) server provides a precise time source (radio clock or atomic clock) to synchronize the system clocks of network devices. NTP is transported over User Datagram Protocol UDP/IP. All NTP communications use UTC. An NTP server receives its time from a reference time source, such as a radio clock or atomic clock, attached to the time. NTP distributes this time across the network.

In a large enterprise network, having one time standard for all network devices is critical for management reporting and event logging functions when trying to correlate interacting events logged across multiple devices. Many enterprise customers with extremely mission-critical networks maintain their own stratum-1 NTP source.

Time synchronization happens when several frames are exchanged between clients and servers. The switches in client mode know the address of one or more NTP servers. The servers act as the time source and receive client synchronization requests.

To configure NTP in a server association, perform this task:

 

Command

Purpose

Step 1

 

 

switch# config t

Enters configuration mode.

Step 2

 

 

switch(config)# ntp server 10.10.10.10

Forms a server association with a server.

 

switch(config)#

 

 

Step 3

 

 

switch(config)# exit

Returns to EXEC mode.

 

switch#

 

 

Step 4

 

 

switch# copy running-config startup-config

Saves your configuration changes to nonvolatile

 

 

memory.

 

 

Tip

This is one instance where you can save

 

 

 

the configuration as a result of an NTP

 

 

 

configuration change. You can enter this

 

 

 

command at any time.

 

 

 

 

Management Interface Configuration

A single IP address is used to manage the switch. The switch management (mgmt0) interface uses this IP address. The management interface on the switch allows multiple, simultaneous Telnet or SNMP sessions. You can remotely configure the switch through the management interface, but first you must configure some IP parameters (IP address, subnet mask) so that the switch is reachable. You can manually configure the management interface from the CLI.

The management port (mgmt0) is autosensing and operates in full duplex mode at a speed of 10/100 Mbps. The speed and mode cannot be configured.

Note Before you begin to configure the management interface manually, obtain the switch’s IP address and IP subnet mask. Also make sure the console cable is connected to the console port.

Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference

 

OL-6988-02

3-13

 

 

 

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Contents Initial Configuration Initial Setup Routine Starting a Cisco MDS 9020 Fabric SwitchDefault Login Preparing to Configure the SwitchSubnetwork Setup OptionsEnter yes to enter the setup mode Assigning Setup InformationEnter the user password Enter yes no is the default to create additional accountsEnter a name for the switch Enter the default gateway IP addressEnter no no is the default to not configure the NTP server Enter no no is the default to disable the SSH serviceEnter yes yes is default to use and save this configuration Using the setup Command 2illustrates serial console access and out-of-band access Accessing the SwitchWhere Do You Go Next? Assigning a Switch NameVerifying the Status of the Switch Configuring the Time Zone Configuring Date and TimeAdjusting for Daylight Saving Time NTP Configuration Management Interface ConfigurationUsing the force Option Obtaining Remote Management AccessConfiguring the Default Gateway Default Gateway ConfigurationDisables the Telnet server Working with Configuration FilesTelnet Server Connection Disabling a Telnet ConnectionDisplaying Configuration Files Initial Configuration Working with Configuration Files Saving Configuration Files to an External Device Downloading Configuration Files to the SwitchBacking Up the Current Configuration Saving the ConfigurationCopying Files Deleting Files Rolling Back to a Previous ConfigurationInitial Configuration Deleting Files