KB.15.15

Example 40 An IP address that is not actually configured

on the VLAN

HP Switch(config)#: show running-config

vlan 5

name “VLAN5”

ip address 11.22.33.1 255.0.0.0

exit

vlan 6

name “VLAN6”

ip address 11.23.34.1 255.255.255.0

exit

The information is retained in the config file to allow you to

boot up the switch and have it function as it did when it was

configured with earlier software that allows overlapping

subnets. This occurs because the overlapping IP address

has been removed and is not visible to the switch. To resolve

this:

If you attempt to remove the overlapping subnet from the

VLAN, the switch displays an error message similar to:

The IP address ip address is not configured on this VLAN

This occurs because the overlapping IP address has been

removed and is not visible to the switch. To resolve this:

• Enter the show ip command to determine which

addresses are visible to the switch.

• Remove the erroneous IP addresses from the config file

by entering the no ip address command to remove

all the IP addresses from the specific VLAN. Be sure to

document the other valid IP addresses on that VLAN so

they can be restored after removing the erroneous IP

addresses from the config file.

If you go back to a software version prior to K.15.09 before

removing the overlapping IP address, the prior software

version enables the overlapping IP subnet.

DHCP/Bootp If you are using DHCP/Bootp to acquire the switch's

configuration, packet time-to-live, and TimeP information,

designates the VLAN on which DHCP is configured as the

Primary VLAN.

NOTE: In the factory-default configuration, the

DEFAULT_VLAN is the Primary VLAN.

Per-VLAN features IGMP and some other features operate on a per VLAN basis.

This means you must configure such features separately for

each VLAN in which you want them to operate.

Default VLAN You can rename the default VLAN, but you cannot change

its VID (1) or delete it from the switch.

48 Static Virtual LANs