Table 52: DHCP Pool Configuration Fields (continued)
Field
Description
Network Base Address
(Dynamic pools only) The network portion of the IP address. A DHCP client can be
offered any available IP address within the defined network as long as it has not
been configured as an excluded address.
Network Mask
For dynamic bindings, this field specifies the subnet mask for a DHCP address of a
dynamic pool. You can enter a value in Network Mask or Prefix Length to specify the
subnet mask, but do not enter a value in both fields.
Client Name
For manual bindings, this field specifies a name for the client to which the DHCP
server will statically assign an IP address. This field is optional.
Hardware Address Type
For manual bindings, this field specifies the protocol of the hardware platform of the
DHCP client. Valid types are ethernet and ieee802. Default value is ethernet.
Hardware Address
For manual bindings, this field specifies the MAC address of the hardware platform
of the DHCP client.
Client ID
(Manual pools only) The value some DHCP clients send in the Client Identifier field of
DHCP messages. This value is typically identical to the Hardware Address value. In
some systems, such as Microsoft DHCP clients, the client identifier is required instead
of the hardware address. If the client's DHCP request includes the client identifier, the
Client ID field on the DHCP server must contain the same value, and the Hardware
Address Type field must be set to the appropriate value. Otherwise, the DHCP server
will not respond to the client's request.
Host IP Address
(Manual pools only) The IP address to offer the client.
Host Mask
For manual bindings, this field specifies the subnet mask to be statically assigned to
a DHCP client. You can enter a value in Host Mask or Prefix Length to specify the
subnet mask, but do not enter a value in both fields.
Lease Expiration
Whether the information the server provides to the client should expire.
•
Enable – Allows the lease to expire. If you select this option, you can specify the
amount of time the lease is valid in the Lease Duration field.
•
Disable – Sets an infinite lease time. For Dynamic bindings, an infinite lease time
implies a lease period of 60 days. For a Manual binding, an infinite lease period
never expires.
Lease Duration
The number of Days, Hours, and Minutes the lease is valid. This field cannot be
configured if the Lease Expiration is disabled.
Next Server Address
The IP address of the next server the client should contact in the boot process. For
example, the client might be required to contact a TFTP server to download a new
image file. To configure this field, click the Edit icon in the row. To reset the field to
the default value, click the Reset icon in the row.
To configure settings for one or more default routers, DNS servers, or NetBIOS
servers that can be used by the client(s) in the pool, use the buttons available in the
appropriate table to perform the following tasks:
•
To add an entry to the server list, click the + (plus) button and enter the IP
address of the server to add.
•
To edit the address of a configured server, click the Edit icon associated with the
entry to edit and update the address.
•
To delete an entry from the list, click the – (minus) button associated with the
entry to remove.
•
To delete all entries from the list, click the – (minus) button in the heading row.
Configuring System Information
ExtremeSwitching 200 Series: Administration Guide
77
