Agilent Technologies Switch/Measure manual Default Gateway

2Features and Functions

Front Panel Operation:

Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > DHCP OFF >

AUTO IP OFF > . . . SUBNET MASK

Remote Interface Operation:

SYSTem:COMMunicate:LAN:SMASk <mask>

Default Gateway

A Default Gateway address allows the instrument to communicate with systems that are not on the local subnet. Thus, this is the Default Gateway where packets are sent which are destined for a device not on the local subnet, as determined by the Subnet Mask setting. Contact your network administrator to determine if a gateway is being used and for the correct address.

If you change the Default Gateway, you must cycle power on the 34980A to activate the new setting.

•The default for the 34980A is “0.0.0.0” (no gateway, and subnetting is not being used).

•If DHCP is enabled, the specified Default Gateway is not used. However, if the DHCP server fails to assign a valid IP address, the currently configured Default Gateway will be used.

•Dot- notation addresses (“nnn.nnn.nnn.nnn” where “nnn” is a byte value) must be expressed with care, as most web software on the computer will interpret byte values with leading zeros as octal numbers. For example, “255.255.020.011” is actually equivalent to decimal “255.255.16.9” not “255.255.20.11” because “.020” is interpreted as “16” expressed in octal, and “.011” as “9”. To avoid confusion, use only decimal expressions of byte values (0 to 255), with no leading zeros.

For example, the 34980A assumes that all dot- notation addresses are expressed as decimal byte values and strips all leading zeros from these byte values. Thus, attempting to set a Default Gateway of “255.255.020.011” will become “255.255.20.11” (a purely decimal expression). Be sure to enter the exact expression, “255.255.20.11”, in your computer web software to address the instrument. Do not use “255.255.020.011” — the computer will interpret this address differently due to the leading zeros.

•The Default Gateway is stored in non- volatile memory, and does not change when power has been off, after a Factory Reset (*RST command), or after an Instrument Preset (SYSTem:PRESet command).

80 34980A User’s Guide