IP Address Range Change

[lukekinson]

Hello

We currently have 3 vlans setup on out 4507 switch they are 10.1.1.0, 10.1.101.0 and 10.1.102.0. we have been told by HQ that we need to migrate all addresses to 10.84.0.0 range. How can i do this in stages without interupting the network. Do i set up a static route to the new range on the switch??

[JORGE RODRIGUEZ]

luke, can you email me your network diagram if you have any.. we'll take it from there.

[JORGE RODRIGUEZ]

email me or attach a network diagram to see your LAN and Edge connectivity to HQ.

to remove vlan3 pertaining to 10.1.102.0 subnet and its SVI do as follows on your core switch, also

remove static routes pertaining to it.

Cat4507R#vlan database

Cat4507R(vlan)#no vlan 3

Cat4507R(vlan)#exit

Cat4507R#config t

Cat4507R(config)#no interface vlan 3

Cat4507R(config)#no ip route 10.1.102.0 255.255.255.0 Vlan3

Cat4507R(config)#exit

Cat4507R#clear ip route 10.1.102.0

you could use 10.84.1.128/25 for internal network devices this will give you 126 IP addresses.

10.84.1.128/25 ( net management interfaces )

10.84.2.0/16 for Server ( 254 hosts )

10.84.3.0/16 printers ( 254 hosts )

10.84.10.0/16 workstations(254 hosts)

for your your servers segment, printers and workstation just create the vlans and its interfaces

Cat4507R#vlan database

Cat4507R(vlan)#vlan 5 name servers_segment

Cat4507R(vlan)#vlan 6 name printers_segment

Cat4507R(vlan)#vlan 7 name Workstations_segment

Cat4507R(vlan)#exit

Cat4507R#show vlan ( verify new vlans are there )

create new SVI for the new vlans

Cat4507R#config t

Cat4507R(config)#interface vlan5

Cat4507R(config-if)#ip address 10.18.2.254 255.255.0.0

Cat4507R(config-if)#Description Server_Segment

Cat4507R(config-if)#no shut

Cat4507R(config-if)#exit

Cat4507R(config)#interface vlan6

Cat4507R(config-if)#ip address 10.18.3.254 255.255.0.0

Cat4507R(config-if)#Description Printer_Segment

Cat4507R(config-if)#no shut

Cat4507R(config-if)#exit

Cat4507R(config)#interface vlan7

Cat4507R(config-if)#ip address 10.18.10.254 255.255.0.0

Cat4507R(config-if)#Description Workstations_Segment

Cat4507R(config-if)#no shut

Cat4507R(config-if)#exit

in your downstream switches make sure you assign a port for a workstation vlan 7, configure PC

with a new IP scheme from 10.18.10.0 and ping its respective gateway 10.18.10.254, also from

PC ping any host on 10.1.1.0 and 10.1.101.0 subnets.