Configuring IP Addressing

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

ProCurve# show run

Running configuration:

; J8715A Configuration Editor;

hostname "ProCurve" module 1 type J8702A module 2 type J8705A

trunk A11-A12 Trk1 Trunk

 

Because switch 4 (figure 8-7) received

ip default-gateway 10.10.10.115

 

 

its most recent IP addressing from a

 

snmp-server community "public" Unrestricted

DHCP/Bootp server, the switch

vlan 1

implements the IP addressing

 

 

 

ignores the ip preserve command and

name "DEFAULT_VLAN"

included in this file.

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

 

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.

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