D-Link DI-1750 Reference Manual page 108

♦ TACACS+ assigned IP address or IP address pooling—During the authorization phase of IPCP
address negotiation, TACACS+ can return an IP address that the user being authenticated on a
dialup interface can use.
♦ Local address pool—The local address pool contains a set of contiguous IP addresses (a
maximum of 1024 addresses) stored in two queues. The free queue contains addresses are stored
to the free queue in first-in, first-out (FIFO) order to minimize the chance the address will be reused,
and to allow a peer to reconnect using the same address that it used in the last connection. If the
address is available, it is assigned; if not, another address from the free queue is assigned.
2. Precedence Rules
The following precedence rules of peer IP address support determine which address is used.
Precedence is listed from most likely to least likely:
An address from a local IP address pool or DHCP (typically not allocated unless no other address
exists)
Configured address from the peer default ip address command or address from the protocol
translate command.
AAA/TACACS+ provided address or addresses from the pool named by AAA/TACACS+.
Peer provided address from IPCP negotiation (not accepted unless no other address exists).
3. Interfaces Affected
Address pooling is available on all asynchronous serial, synchronous serial, ISDN BRI, and ISDN PRI
interfaces running PPP.
5.7.7 Configuring IP Address Assignment for each Interface
♦ Define an IP address pool for a specific interface.
♦ Specify one IP address to be assigned to all dial-in peers on an interface.
To define an IP address pool for use on an interface, use the following commands:
ip local pool poolname
{begin-ip-address
[ip-address-number]}
interface type number
peer default config-ip addrpool
pool-name
Please refer to the following example for the order of these commands:
[DEFAULT@Router /config/]#ip
Key Word:
U(undo) D(default)
......
(11) local
(12) name-server
......
Please Input the code of command to be excute(0-20): 11
Key Word:
Q(quit)
(00)pool
Please Input the code of command to be excute(0-0): 0
Key Word:
Command
Q(quit)
Specify local options
Specify IP address of domain name server to use
IP Local address pool lists
Model Name
Purpose
Creates one or more local IP address pools.
Specifies the interface and enters interface
configuration mode.
Specifies the address pool for the interface to
use.
- 106 -