9.5.01 HP P4000 SAN Solution User Guide (AX696-96168, February 2012)

Configuring a disabled interface
If one interface is still connected to the storage system but another interface is disconnected, you
can reconnect to the second interface using the CMC. See “Configuring the IP address manually”
(page 54).
If both interfaces to the storage system are disconnected, you must attach a terminal, or PC or
laptop to the storage system with a null modem cable and configure at least one interface using
the Configuration Interface. See “Configuring a network connection” (page 236).
Using a DNS server
You configure DNS at the management group level for all storage systems in the management
group. Use the DNS tab for the management group to change the settings.
The storage system can use a DNS server to resolve host names. For example, if you enter a host
name to specify an NTP time server, the storage system will use DNS to resolve the host name to
its IP address. For example, the time server in Boulder, Colorado has a host name of
time.nist.gov. DNS resolves this host name to its IP address of 192.43.244.18.
DNS and DHCP
If you configure the storage system to use DHCP to obtain an IP address, and if the DHCP server
is configured to provide the IP addresses of the DNS servers, then a maximum of three DNS servers
will automatically be added to the management group. These DNS servers are listed as IP addresses
in the management group on the DNS tab. You can remove these DNS servers, but storage systems
will not be able to resolve host names until you enter a new DNS server.
DNS and static IP addresses
If you assigned a static IP address to the storage system and you want the storage system to
recognize host names, you must manually add a DNS server to the management group DNS tab.
NOTE: If you initially set up the storage system to use DHCP, and then change the configuration
to use a static IP address, the DNS server provided by DHCP will remain on the DNS tab. You can
remove or change this DNS server.
Getting there
1. In the navigation window, select a management group and log in.
2. Select the DNS tab.
Adding the DNS domain name
Add the name of the DNS domain in which the management group resides.
1. Click DNS Tasks, and select Edit DNS Domain Name.
2. Enter the DNS domain name.
3. Click OK when you are finished.
Adding the DNS server
Add up to three DNS servers for use with the management group.
1. Click DNS Tasks, and select Edit DNS Servers.
2. Click Add, and enter the IP address for the DNS server.
3. Click OK.
4. Repeat steps 1 through 3 to add up to three servers.
72 Managing the network