Specifications

26  Operations
Installation and Operations Manual
Enabling the DHCP boot delay:
To enable the boot delay, check the Enable checkbox. To disable the boot delay, uncheck (clear) the
checkbox. Click Apply.
Enabling
the Boot Delay option gives the PT22 approximately 90-seconds to establish a connection
through a DHCP server. This interval allows various network component activities to occur as the PT22
powers up (such as obtaining SNTP time stamps for logging). This is the default state.
Disabling
the Boot Delay option forces the unit to boot after approximately 5-seconds regardless of the
DHCP acquisition state. This speeds up a boot when a DHCP server is connected to one of the outlets in
the unit. In this configuration, SNMP traps, SNTP, and other protocols will not be available until a DHCP
address has been resolved.
NOTES:
 The Boot Delay option executes only when DHCP is enabled.
 The firmware can detect network link integrity and will wait for network connection. This means that if the network is
not currently connected, the enabled Boot Delay option will be ignored.
Enabling the DHCP static address fallback:
To enable static address fallback, check the Enable checkbox. To disable, uncheck (clear) the checkbox.
Click Apply.
Enabling
the Static Address Fallback option informs the unit to automatically fall back to a static
address if a DHCP server does not respond after 90-seconds. This is the default state.
Disabling
the Static Address Fallback option generates DHCP server requests until the unit obtains a
dynamic address.
NOTES:
 The Static Address Fallback option executes only when DHCP is enabled.
 If the DHCP server boot time is excessive, you may need to disable the Static Address Fallback option.
Network defaults
The PT22 is configured with the following network defaults to allow unit configuration out-of-the-box
through either Telnet or Web:
 IP address: 192.168.1.254
 Subnet Mask: 255.255.255.0
 Gateway: 192.168.1.1
The initial local PC network connection must be configured as noted below:
NOTE: Contact your system administrator for instructions in reconfiguring the network connection. Reconfiguration of
your network connection may require a restart to take effect.
 IP address: 192.168.1.x (where x is 2-253)
 Subnet Mask: 255.255.255.0
NOTE: The unit must be restarted after network configuration changes. See the “Performing a Warm Boot” section in this
manual.
Setting the IP address, subnet mask, gateway, or DNS address:
In the appropriate field, enter the IP address, subnet mask, gateway address or DNS address and click Apply.