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Enhancements in Release F.04.08

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

IP Preserve: Retaining VLAN-1 IP Addressing Across

Configuration File Downloads

IP Preserve enables you to copy a configuration file to multiple Series 2500 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 configuration file specifies is imple-

mented 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 configuration file, see figure 59, below.

To set up IP Preserve, enter the ip preserve statement at the end of a configuration file. (Note that you

do not execute IP Preserve by entering a command from the CLI).

Figure 59. Example of Implementing IP Preserve in a Configuration File

Entering "ip preserve" in the last line of a configuration

file implements IP Preserve when the file is downloaded

to the switch and the switch reboots.

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HP PROCURVE 2300 Manuale Utente Pagina 140