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DHCP superscopes

How do i configure a DHCP superscopes on Cisco routers?

Thanks

2 REPLIES
Bronze

Re: DHCP superscopes

I think the only thing you can do to configure the DHCP superscope on the router is the following:

Declare your primary dhcp pool as you would normally do, then decalre a secondary dhcp pool, and configure as much as you need.

Then assign secondary ip addresses on the interface connecting to your lan and add the " ip dhcp smart-relay" command.

With this, the router will start giving out ip addresses from the primary, and when it runs out of them, it will start giving out from the second, and so on.

For example,

Lets say you have networks 10.1.1.0, 10.1.2.0 and 10.1.3.0

First you declare your ip pools:

ip dhcp pool rollover

network 10.1.1.0 255.255.255.0

dns-server {ip of dns 1} {ip of dns 2} 

default-router {ip address}

lease {days} {hours} {minutes}

netbios-name-server {ip address}

domain-server {domain, i.e. cisco.com}

ip dhcp pool rollover2

network 10.1.2.0 255.255.255.0

dns-server {ip of dns 1} {ip of dns 2}  <---- same as above

default-router {ip address} <--------- same as above

lease {days} {hours} {minutes} <---- same as above

netbios-name-server {ip address} <---- same as above

domain-server {domain, i.e. cisco.com} <----- same as above

ip dhcp pool rollover3

network 10.1.3.0 255.255.255.0

dns-server {ip of dns 1} {ip of dns 2}  <---- same as above

default-router {ip address} <--------- same as above

lease {days} {hours} {minutes} <---- same as above

netbios-name-server {ip address} <---- same as above

domain-server {domain, i.e. cisco.com} <----- same as above

Then lets say that you LAN is connected via the interface Ethernet0, you

would have to assign 3 ip addresses to the interface:

Interface Ethernet0

ip address 10.1.1.0 255.255.255.0

ip address 10.1.2.0 255.255.255.0 secondary

ip address 10.1.3.0 255.255.255.0 secondary

And from the global config mode add the "ip dhcp smart-relay" command

That would be all the config needed.

New Member

I had the same issue after 8

I had the same issue after 8 years of this post and the reply helped me :) 

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