HP rp3440 User Service Guide, Sixth Edition - HP 9000 rp3410/rp3440 - Page 93

Configuring the iLO MP LAN Using ARP Ping

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TIP: HP recommends using the DHCP and DNS method to simplify access to the iLO MP. When you use DHCP and DNS, you can connect to the iLO MP by typing the DNS name in your browser rather than an IP address only if the following conditions apply: • DHCP must be enabled (DHCP is enabled by default) • You are using a DHCP server that provides the domain name and the primary DNS server IP address • The primary DNS server accepts dynamic DNS (DDNS) updates • The primary DNS server IP address has been configured through the DHCP server To configure the iLO MP using DHCP and DNS, follow these steps: 1. Obtain the factory-set DNS name from the toe-tag on the server. The DNS name is 14 characters long, consisting of the letters mp followed by the 12 characters of the MAC address, for example: mp0014c29c064f. This address is assigned to the iLO MP card. The iLO MP card has a unique MAC address that identifies the card on the network. 2. Connect the LAN cable from the server to an active network port. 3. Apply AC power to the server (if not already done). 4. Open a browser, Telnet, or SSH client and enter the default host name. The iLO MP Log In window opens. Configuring the iLO MP LAN Using ARP Ping The Address Resolution Protocol (ARP) and Packet Internet Grouper (Ping) utility uses ARP packets to ping, or discover, a device on the local network segment. The IP address you assign to the server must use the same network segment, or subnet, as the computer assigning the address. ARP does not work across routed or switched networks. ARP Ping operational issues include the following: • You can use ARP Ping regardless of the status of DHCP, unless an IP address has ever been acquired using DHCP • When ARP Ping is successful, DHCP status is disabled • Some DHCP server options can cause the apparent issuance of ARP Ping to the iLO MP which negates the DHCP/DDNS method • The PC and the server must be on the same physical subnet • When a new server is first booted, DHCP is automatically available (factory-set default); but ARP Ping does not start until three minutes after the iLO MP is booted. This applies to every subsequent boot of the iLO MP until an IP address is obtained by DHCP or has been assigned using the LC command, or ARP Ping succeeds There are two ways to use the ARP Ping utility: • Connect a PC to the network that is on the same physical subnet as the server and run the ARP Ping commands from the PC • Locate an existing server on the network, log into it, and run the ARP Ping commands from the server Table 3-7 lists the ARP Ping commands. Console Setup 93

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TIP:
HP recommends using the DHCP and DNS method to simplify access to the iLO MP.
When you use DHCP and DNS, you can connect to the iLO MP by typing the DNS name in your
browser rather than an IP address only if the following conditions apply:
•
DHCP must be enabled (DHCP is enabled by default)
•
You are using a DHCP server that provides the domain name and the primary DNS server
IP address
•
The primary DNS server accepts dynamic DNS (DDNS) updates
•
The primary DNS server IP address has been configured through the DHCP server
To configure the iLO MP using DHCP and DNS, follow these steps:
1.
Obtain the factory-set DNS name from the toe-tag on the server. The DNS name is 14
characters long, consisting of the letters mp followed by the 12 characters of the MAC address,
for example:
mp0014c29c064f
. This address is assigned to the iLO MP card. The iLO MP
card has a unique MAC address that identifies the card on the network.
2.
Connect the LAN cable from the server to an active network port.
3.
Apply AC power to the server (if not already done).
4.
Open a browser, Telnet, or SSH client and enter the default host name. The iLO MP Log In
window opens.
Configuring the iLO MP LAN Using ARP Ping
The Address Resolution Protocol (ARP) and Packet Internet Grouper (Ping) utility uses ARP
packets to ping, or discover, a device on the local network segment. The IP address you assign
to the server must use the same network segment, or subnet, as the computer assigning the
address. ARP does not work across routed or switched networks.
ARP Ping operational issues include the following:
•
You can use ARP Ping regardless of the status of DHCP, unless an IP address has ever been
acquired using DHCP
•
When ARP Ping is successful, DHCP status is disabled
•
Some DHCP server options can cause the apparent issuance of ARP Ping to the iLO MP
which negates the DHCP/DDNS method
•
The PC and the server must be on the same physical subnet
•
When a new server is first booted, DHCP is automatically available (factory-set default);
but ARP Ping does not start until three minutes after the iLO MP is booted. This applies to
every subsequent boot of the iLO MP until an IP address is obtained by DHCP or has been
assigned using the
LC
command, or ARP Ping succeeds
There are two ways to use the ARP Ping utility:
•
Connect a PC to the network that is on the same physical subnet as the server and run the
ARP Ping commands from the PC
•
Locate an existing server on the network, log into it, and run the ARP Ping commands from
the server
Table 3-7
lists the ARP Ping commands.
Console Setup
93