Extending DHCP scope by adding a secondary IP range to same vlan?
Current dhcp scope is running out of IPs and would like to add a secondary IP range for vlan 50 and I was hoping the following will work. Extending the current ip range is not an option at the moment, so the PC's connected to switch ports configured for vlan 50 will pick up addresses from both ranges...
I was hoping someone can clarify if the following scenario will work or not or can foresee any problems with it, HSRP is also included, will this be a issue?:
interface Vlan50 ip address 188.8.131.52 255.255.255.0 secondary ip address 192.168.10.1 255.255.0.0 standby 1 ip 192.168.10.254 standby 1 ip 184.108.40.206 secondary standby 1 priority 110 standby 1 preempt
interface Vlan50 ip address 220.127.116.11 255.255.255.0 secondary ip address 192.168.10.2 255.255.0.0 standby 1 ip 192.168.10.254 standby 1 ip 18.104.22.168 secondary
sw1 and sw2:
ip dhcp excluded-address 192.168.10.1 ip dhcp excluded-address 192.168.10.2
ip dhcp excluded-address 192.168.10.254 ip dhcp excluded-address 22.214.171.124
ip dhcp excluded-address 126.96.36.199
ip dhcp excluded address 188.8.131.52
ip dhcp pool pool1 network 192.168.10.0 255.255.255.0 dns-server 184.108.40.206 default-router 192.168.10.254 ! ip dhcp pool pool2 network 220.127.116.11 255.255.255.0 dns-server 18.104.22.168 default-router 22.214.171.124
Sorry forgot to mention the above config is isolated in a test lab environment and will not be using these addresses in the production environment.
I tested in a lab environment and I was able to assign the two laptops with an ip address, one from the 192.169.12.xand one from the 192.168.10.x range and both laptops were connected to switch ports configured for access vlan 50.
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