IPv6 Management Features

IP Preserve for IPv6

;J8697A Configuration Editor; Created on release #K.13.01 hostname "ProCurve"

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password manager password operator ip preserve

Entering an ip preserve statement as the last line in a configuration file stored on a TFTP server allows you to download and execute the file as the startup-config file on an IPv6 switch. When the switch reboots, the configuration settings in the downloaded file are implemented without changing the IPv6 address and gateway assigned to the switch as shown in Figure 5-11.

Figure 5-10. Example of How to Enter IP Preserve in a Configuration File

To download an IP Preserve configuration file to an IPv6-based switch, enter the TFTP copy command as described in “TFTP File Transfers over IPv6” on page 5-15to copy the file as the new startup-config file on a switch.

When you download an IP Preserve configuration file, the following rules apply:

■If the switch’s current IPv6 address for VLAN 1 was statically configured and not dynamically assigned by a DHCP/Bootp server, the switch reboots and retains its current IPv6 address, subnet mask, and gateway address. All other configuration settings in the downloaded configuration file are applied.

■If the switch’s current IPv6 address for VLAN 1 was assigned from a DHCP server and not statically configured, IP Preserve is suspended. The IPv6 addressing specified in the downloaded configuration file is implemented when the switch copies the file and reboots.

•If the downloaded file specifies DHCP/Bootp as the source for the IPv6 address of VLAN 1, the switch uses the IPv6 address assigned by the DHCP/Bootp server.

•If the file specifies a dedicated IPv6 address and subnet mask for VLAN 1 and a Gateway IPv6 address, the switch implements these settings in the startup-config file.

To verify how IP Preserve was implemented in a switch, after the switch reboots, enter the show run command. Figure 5-11 shows an example in which all configurations settings have been copied into the startup-config file except for the IPv6 address of VLAN 1 (2001:db8::214:c2ff:fe4c:e480) and the default IPv6 gateway (2001:db8:0:7::5), which were retained.

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