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8-19
Configuring IP Addressing
IP Preserve: Retaining VLAN-1 IP Addressing Across Configuration File Downloads
Figure 8-9. Configuration File in TFTP Server, with Dedicated IP Addressing Instead of DHCP/Bootp
To summarize the IP Preserve effect on IP addressing:
■ If the switch received its most recent VLAN 1 IP addressing from a DHCP/
Bootp server, it ignores the IP Preserve command when it downloads the
configuration file, and implements whatever IP addressing instructions
are in the configuration file.
■ If the switch did not receive its most recent VLAN 1 IP addressing from a
DHCP/Bootp server, it retains its current IP addressing when it downloads
the configuration file.
■ The content of the downloaded configuration file determines the IP
addresses and subnet masks for other VLANs.
ProCurve# show run
Running configuration:
; J8715A Configuration Editor;
hostname "ProCurve"
module 1 type J8702A
module 2 type J8705A
trunk A11-A12 Trk1 Trunk
ip default-gateway 10.10.10.115
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged A1,A7-A10,A13-A24,B1-B24,Trk1
ip address 10.12.17.175 255.255.255.0
tagged A4-A6
no untagged A2-A3
exit
vlan 2
name "VLAN2"
untagged A2-A3
no ip address
exit
spanning-tree Trk1 priority 4
password manager
password operator
Because switch 4 (figure 8-7) received
its most recent IP addressing from a
DHCP/Bootp server, the switch
ignores the ip preserve command and
implements the IP addressing
included in this file.