8 Communications
Frequently Asked Questions (FAQ)
Agilent 990 Micro GC User Manual 121
Frequently Asked Questions (FAQ)
Q: Can I connect the Micro GC to my site network?
A: Yes, if the network is standard Ethernet and uses TCP/IP with UTP cabling.
Q: I'm using a DHCP server; can I use this to assign an IP address to the Micro GC?
A: If you have a Micro GC with main board installed, yes.
Q: How do I assign an IP address to the Micro GC?
A: See Step 6: Assign an IP address on page 37.
Q: Are the network settings saved if the Micro GC is restarted, or after loss of power?
A: Yes, the network settings of the Micro GC are stored in flash memory, and will not be erased at
loss of power.
Q: Can I control my Micro GC from anywhere in the world through the Internet?
A: Yes, if your network is designed for this, and has internet access or remote access facilities (the
ports 4900, 4901 and 4902 must be open).
Q: How Can I connect to my Micro GC if the IP address is forgotten or unknown?
A: See the Note on page 38 to assign another IP.
Glossary of network terms
Crossover cable A cable used to connect two, and only two, Ethernet devices directly without the
use of a hub or switch.
Domain One of several settings within the TCP/IP configuration that identifies paths used to
communicate with Ethernet devices. The Domain is an IP address.
Ethernet address (MAC address) This is a unique identifier that every Ethernet communication
device has assigned to it. Typically, the Ethernet address cannot be changed and is the permanent
way of identifying a particular hardware device. The Ethernet address consists of 6 pairs of
hexadecimal digits.
Gateway This is one of several settings within the TCP/IP configuration that identifies paths
used to connect with Ethernet devices on a different subnet. The Gateway is assigned an
IP Address.
Host name The host name is an alternate way of identifying a device that is friendlier to people.
Frequently the host name and the IP address may be used interchangeable.
IP address This is a unique number for each Ethernet device within the set of connected devices.
Two PCs may have identical IP addresses so long as they are not interconnected to each other
through the Internet. The IP Address consists of a series of four sets of decimal numbers
(between 1 and 255) that provide routing information used by the TCP/IP protocol to establish a
reliable connection. Without the IP Address, communications would be bogged down trying to
establish connections to Ethernet addresses at unknown locations.
Patch cable A cable that is used to connect Ethernet devices to hubs, switches, or your company
network.
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