AIS AI2524 Manuel D’Utilisation
AI2524 Router Card User’s Manual
Page 11-8
August 1997
2524UM
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Configure IP
Address Pooling
Address Pooling
Point-to-point interfaces must be able to provide a remote node with
its IP address through the IP Control Protocol (IPCP) address negotia-
tion process. The IP address can be:
its IP address through the IP Control Protocol (IPCP) address negotia-
tion process. The IP address can be:
z
Configured through the command lin
z
Entered with an EXEC-level command
z
Provided by TACACS+, DHCP, or from a locally administered
pool
pool
IP address pooling consists of a pool of IP addresses from which an in-
coming interface can provide an IP address to a remote node through
the IP Control Protocol (IPCP) address negotiation process. It also en-
hances the flexibility of configuration by allowing multiple types of
pooling to be active simultaneously.
coming interface can provide an IP address to a remote node through
the IP Control Protocol (IPCP) address negotiation process. It also en-
hances the flexibility of configuration by allowing multiple types of
pooling to be active simultaneously.
IP address pooling allows the configuration of a global default address
pooling mechanism, per-interface configuration of the mechanism,
and per-interface configuration of a specific address or pool name.
pooling mechanism, per-interface configuration of the mechanism,
and per-interface configuration of a specific address or pool name.
Peer Address Allocation
A peer IP address can be allocated to an interface through several
methods:
methods:
z
Dialer map lookup. This method is used only if the peer requests
an IP address, if no other peer IP address has been assigned, and if
the interface is a member of a dialer group.
an IP address, if no other peer IP address has been assigned, and if
the interface is a member of a dialer group.
z
PPP or SLIP EXEC command. An asynchronous dial-up user can
enter a peer IP address or host name when PPP or SLIP is invoked
from the command line. The address is used for the current session
and then discarded.
enter a peer IP address or host name when PPP or SLIP is invoked
from the command line. The address is used for the current session
and then discarded.
z
IPCP negotiation. If the peer presents a peer IP address during
IPCP address negotiation and if no other peer address is assigned,
the presented address is acknowledged and used in the current ses-
sion.
IPCP address negotiation and if no other peer address is assigned,
the presented address is acknowledged and used in the current ses-
sion.
z
Chat script. The IP address in the
dialer map
command entry
that started the script is assigned to the interface and overrides any
previously assigned peer IP address.
previously assigned peer IP address.
z
VTY/Protocol translation. Th
translate
command can defin
the peer IP address for a VTY (pseudo async interface).