Ip Preserve: Retaining Vlan-1 Ip Addressing Across Configuration File Downloads; Operating Rules For Ip Preserve - HP PROCURVE 6120 Management And Configuration Manual

Configuring IP Addressing

IP Preserve: Retaining VLAN-1 IP Addressing Across Configuration File Downloads

8-16
IP Preserve: Retaining VLAN-1 IP
Addressing Across Configuration File
Downloads
For the switches covered in this guide, IP Preserve enables you to copy a
configuration file to multiple switches while retaining the individual IP
address and subnet mask on VLAN 1 in each switch, and the Gateway IP
address assigned to the switch. This enables you to distribute the same
configuration file to multiple switches without overwriting their individual IP
addresses.

Operating Rules for IP Preserve

When ip preserve is entered as the last line in a configuration file stored on a
TFTP server:
■ If the switch's current IP address for VLAN 1 was not configured by DHCP/
Bootp, IP Preserve retains the switch's current IP address, subnet mask,
and IP gateway address when the switch downloads the file and reboots.
The switch adopts all other configuration parameters in the configuration
file into the startup-config file.
If the switch's current IP addressing for VLAN 1 is from a DHCP server,
■
IP Preserve is suspended. In this case, whatever IP addressing the config-
uration file specifies is implemented when the switch downloads the file
and reboots. If the file includes DHCP/Bootp as the IP addressing source
for VLAN 1, the switch will configure itself accordingly and use DHCP/
Bootp. If instead, the file includes a dedicated IP address and subnet mask
for VLAN 1 and a specific gateway IP address, then the switch will
implement these settings in the startup-config file.
The ip preserve statement does not appear in show config listings. To verify
■
IP Preserve in a configuration file, open the file in a text editor and view
the last line. For an example of implementing IP Preserve in a configura-
tion file, see figure 8-6, below.