Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
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Service Configuration Procedures
Configuring IP Address Pools on the System ▀
Cisco ASR 5000 Series Access Service Network Gateway Administration Guide ▄
OL-22953-01
Configuring IP Address Pools on the System
One of the steps in establishing a subscriber session between the mobile and the ASN Gateway service running on the
system is that upon successful authentication, the subscriber's mobile node is assigned an IP address. The IP address can
be dynamically assigned from a pool that is configured on the system or on the AAA server. It also supports static or
dynamic addressing through DHCP client-mode or DHCP relay-mode. The IP address may be an address that is
statically configured in the user profile or even one that is requested by the subscriber.
system is that upon successful authentication, the subscriber's mobile node is assigned an IP address. The IP address can
be dynamically assigned from a pool that is configured on the system or on the AAA server. It also supports static or
dynamic addressing through DHCP client-mode or DHCP relay-mode. The IP address may be an address that is
statically configured in the user profile or even one that is requested by the subscriber.
IP addresses can be dynamically assigned from a single pool, a group of IP pools, or a group of IP pool groups. The
addresses, IP pools, or IP pool groups are placed into a queue in each pool or pool group. An address is assigned from
the head of the queue and when released, returned to the end. This method is known as least recently used (LRU).
addresses, IP pools, or IP pool groups are placed into a queue in each pool or pool group. An address is assigned from
the head of the queue and when released, returned to the end. This method is known as least recently used (LRU).
When a group of pools have the same priority, an algorithm determines a probability for each pool based on the number
of available addresses. A pool is chosen based on the probability. This method, over time, allocates addresses evenly
from the group of pools.
of available addresses. A pool is chosen based on the probability. This method, over time, allocates addresses evenly
from the group of pools.
Important:
Note that setting different priorities on each pool can cause addresses in some pools to be used more
frequently.
This section provides instructions for configuring local IP address pools on the system. These instructions assume that
you are at the root prompt for the Exec mode:
you are at the root prompt for the Exec mode:
Step 1
Enter the configuration mode by entering:
The following prompt appears:
Step 2
Enter context configuration mode:
context_name is the name of the destination context in which you want to configure the IP address pool. The name must
be from 1 to 79 alpha and/or numeric characters and is case sensitive.
be from 1 to 79 alpha and/or numeric characters and is case sensitive.
The following prompt appears:
Step 3
Create an IPv4 address pool by entering the following command.