3. Configuration Options
3-108 December 2002 9000-A2-GB31-00
Alternate IP Address
Possible Settings: 001.000.000.000 – 223.255.255.255, Clear
Default Setting: Clear (000.000.000.000)
Specifies the alternate IP address for the modem port. If this configuration option is not
configured (i.e., it is zero), the modem port’s primary IP address is used when the
alternate telephone directory is used for dial-out traps.
Display Conditions – This option only appears when Port Use is set to Net Link.
001.000.000.000 – 223.255.255.255 – Shows the modem’s alternate IP address, which
you can view or edit.
Clear – Clears the alternate IP address for the modem port and fills the address with
zeros.
Alternate Subnet Mask
Possible Settings: 000.000.000.000 – 255.255.255.255, Clear
Default Setting: 000.000.000.000
Specifies the alternate subnet mask needed to access the unit. Only in effect when the
modem port is configured as a network communication link.
Display Conditions – This option only appears when Port Use is set to Net Link.
000.000.000.000 – 255.255.255.255 – Shows the subnet mask for the modem port, which
you can view or edit.
Clear – Clears the subnet mask for the modem port and fills the address with zeros.
When the node subnet mask is all zeros, the IP protocol creates a default subnet mask
based upon the class of the IP address: Class A: 255.000.000.000, Class B:
255.255.000.000, or Class C: 255.255.255.000.

Table 3-39. Modem Port Options (4 of 4)