DHCP Server
This feature allows an interface to be configured as a DHCP helper so that it forwards the broadcast DHCP requests that it receives from the DHCP servers.
For each parameter of the feature that has a default value, the scope is set to Default (indicated by a check mark), and the default setting or value is shown. To change the default or to enter a value, click the scope drop-down to the left of the parameter field and choose one of the following:
Basic Configuration
Field |
Description |
---|---|
Address Pool |
Enter the IPv4 prefix range, in the format prefix/length, for the pool of addresses in the service-side network for which the router interface acts as the DHCP server. |
Exclude |
Enter one or more IP addresses to exclude from the DHCP address pool. To specify multiple individual addresses, list them separated by a comma. To specify a range of addresses, separate them with a hyphen. |
Lease Time(seconds) |
Specify how long a DHCP-assigned IP address is valid. Range: 60 through 31536000 seconds Default: 86400 |
Static Lease
Field |
Description |
---|---|
Add Static Lease |
|
MAC Address |
Enter the MAC address of the client to which the static IP address is being assigned. |
IP |
Enter the static IP address to assign to the client. |
DHCP Options
Field |
Description |
---|---|
Add Option Code |
|
Code |
Configure the option code. Range: 1-254 |
Type |
Choose one of the three types:
|
Advanced
Field |
Description |
---|---|
Interface MTU |
Specify the maximum MTU size of packets on the interface. Range: 68 to 65535 bytes |
Domain Name |
Specify the domain name that the DHCP client uses to resolve hostnames. |
Default Gateway |
Enter the IP address of a default gateway in the service-side network. |
DNS Servers |
Enter one or more IP address for a DNS server in the service-side network. Separate multiple entries with a comma. You can specify up to eight addresses. |
TFTP Servers |
Enter the IP address of a TFTP server in the service-side network. You can specify one or two addresses. If two, separate them with a comma. |