Change Appliance Network Settings

Revised: September 17, 2012

This chapter explains how you can use AAI to change the network settings or troubleshoot connectivity issues for a DMM appliance.

Note We recommend that you do not change the static IP address that you assign to your DMM appliance.

This chapter includes these sections.

•View Network Settings

•Change the Appliance Hostname

•Change the TCP/IP Settings

•Change the DNS Settings

•Disable Auto Negotiation on the Network Interface Card

•Enable Auto Negotiation on the Network Interface Card

•Troubleshoot Network Issues

View Network Settings

The Network Settings screen displays the hostname, network link status, IP address, subnet mask, default gateway, and primary and secondary DNS server.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

The Network Settings screen displays the network configuration of the appliance and options for changing the configuration.

Step 2 Choose Cancel and press Enter to return to the Main Menu.

Step 3 Stop. You have completed this procedure.

Change the Appliance Hostname

You can change the appliance hostname from the AAI interface. In failover configurations, changing the appliance hostname causes the appliance to fail over.

Changing the hostname causes the appliance to regenerate a self-signed certificate. If you are using a certificate provided by a certificate authority, you will need to obtain a new certificate and install it on the appliance. See Chapter 7 "Manage Digital Certificates" for more information about obtaining and installing certificates.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose HOSTNAME and press Enter.

The current hostname appears on the Hostname Configuration screen.

Step 3 Enter a fully qualified domain name for the appliance, for example server.example.com. Press Enter.

Step 4 Press Enter to confirm the change.

Changing the hostname can take over a minute to complete. A message states when it is finished.

Step 5 Press Enter to return to the Network Settings screen.

Step 6 Stop. You have completed this procedure.

Change the TCP/IP Settings

You can use AAI to change the IP address of your DMM appliance.

Changing the IP address of your appliance causes the appliance to reboot. If you are connected to your appliance using SSH, you will lose your connection.

In failover configurations, changing the TCP/IP settings causes the appliance to fail over.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose TCP_IP and then press Enter.

Step 3 Use the Up/Down arrows to navigate between the fields and provide the following information:

•IP address and subnet mask of the appliance.

•IP address of the default gateway for the appliance.

Step 4 Press Tab to highlight the OK button. Press Enter to accept your changes.

A message appears warning you that the appliance will reboot.

Step 5 Press Enter.

The Static IP Configuration confirmation screen appears.

Step 6 Review your configuration. Press Enter to accept your configuration changes and reboot the appliance. Press Tab to highlight No and press Enter to change the settings again.

If you accepted the configuration changes, the appliance reboots.

Step 7 Stop. You have completed this procedure.

Change the DNS Settings

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose DNS and press Enter.

Step 3 Type the primary DNS server IP address in the PRIMARY DNS field.

Step 4 (Optional) Use the Down arrow to move to the SECONDARY DNS field. Type the secondary DNS server IP address, if there is one.

Step 5 Press Tab to highlight the Ok button, and then press Enter.

The DNS Configuration confirmation screen appears.

Step 6 Press Enter to confirm the settings and return to the Network Settings screen.

Step 7 Stop. You have completed this procedure.

Disable Auto Negotiation on the Network Interface Card

By default, the network interface card is set to auto-negotiate the speed and duplex settings for the network interface. You can turn off auto negotiation and manually configure these properties.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose AUTO_NEGOTIATION and press Enter.

The Auto Negotiation Configuration screen appears. If auto negotiation is enabled, the system asks if you want to disable it.

Step 3 Press Enter to disable auto negotiation.

The NIC Speed screen appears.

Step 4 Use the Up/Down arrows to highlight the desired NIC speed. Press the Spacebar to select the speed.

Step 5 Press Enter.

The NIC Duplex screen appears.

Step 6 Use the Up/Down arrows to highlight the desired duplex setting. Press the Spacebar to select the setting.

Step 7 Press Enter.

The Auto Negotiation Configuration screen displays your chosen settings.

Step 8 Press Enter to accept your changes and return to the Network Settings screen.

Enable Auto Negotiation on the Network Interface Card

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose AUTO_NEGOTIATION and press Enter.

The Auto Negotiation Configuration screen appears. If auto negotiation is disabled, the system asks if you want to enable it.

Step 3 Press Enter to enable auto negotiation and return to the Network Settings screen.

Step 4 Stop. You have completed this procedure.

Troubleshoot Network Issues

This section contains these topics.

•Start or Stop the Network Interface Card

•Restart the Network Interface Card

•Use ping to Troubleshoot Connectivity

•Use netstat to View Active Network Connections

•Use dig to Retrieve DNS Server Information

•Use nslookup to Retrieve DNS Server Information

•View Network Interface Traffic Statistics

Start or Stop the Network Interface Card

You can stop and start the network interface card from the AAI interface. If you are using SSH to access the AAI interface, you will lose connectivity to the appliance. You need to start the network interface card from a terminal connected to the appliance. In failover configurations, this causes the appliance to fail over.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose START/STOP and press Enter.

Step 4 Choose Yes and press Enter.

The NIC will start up or stop, depending upon its previous state.

Step 5 Stop. You have completed this procedure.

Restart the Network Interface Card

You can restart the network interface card (NIC) on the appliance through the AAI interface. If you are logged-in to the appliance through an SSH session, your connection will be dropped when you restart the NIC. You will need to log back in. In failover configurations, this causes the appliance to fail over.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose RESTART and press Enter.

You are asked to confirm that you want to restart the NIC.

Step 4 Choose Yes and press Enter.

If you are connected to the appliance through an SSH session, your session is dropped.

Step 5 Stop. You have completed this procedure.

Use ping to Troubleshoot Connectivity

The AAI interface contains a front end to the ping utility. Use the ping utility to troubleshoot connectivity issues to other devices, for example to ensure the appliance can reach your FTP server for backup or system log.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose PING and press Enter.

Step 4 Type the IP address or hostname of the target device and press Enter.

Step 5 Press Enter to close the results screen.

You are returned to the Network Settings screen.

Step 6 Stop. You have completed this procedure.

Use netstat to View Active Network Connections

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose NETSTAT and press Enter.

Step 4 Use the UP/DOWN arrows to scroll through the results.

Step 5 Press Enter to return to the Network Settings screen.

Step 6 Stop. You have completed this procedure.

Use dig to Retrieve DNS Server Information

Domain information groper (dig) is a utility that queries DNS servers for their records.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose DIG and press Enter.

Step 4 Enter a hostname or IP address to query the DNS server with and press Enter.

Tip Enter -h and press Enter to see advanced information about using the dig utility.

The results screen appears with the DNS information for the IP address or hostname.

Step 5 Press Enter to return to the Network Settings screen.

Step 6 Stop. You have completed this procedure.

Use nslookup to Retrieve DNS Server Information

nslookup is a utility that queries DNS servers for information about a particular host.

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose NSLOOKUP and press Enter.

Step 4 Enter a hostname or IP address to query the DNS server with and press Enter.

The results screen appears with the DNS information for the IP address or hostname.

Step 5 Press Enter to return to the Network Settings screen.

Step 6 Stop. You have completed this procedure.

View Network Interface Traffic Statistics

Procedure

Step 1 Choose NETWORK_SETTINGS and press Enter.

Step 2 Choose NETWORK_TOOLS and press Enter.

Step 3 Choose NIC_STATS and press Enter.

Step 4 Use the UP/DOWN arrows to scroll through the results.

Step 5 Press Enter to return to the Network Settings screen.

Step 6 Stop. You have completed this procedure.