Configuring IP Addressing

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

ProCurve# show run

Running configuration:

; J8715A Configuration Editor; Created on release #K.12.07

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 8-10) 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.

Figure 8-12. 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.

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