Листовка для Cisco Cisco Packet Data Gateway (PDG)
APN Configuration Mode Commands
▀ ip address alloc-method
▄ Cisco ASR 5x00 Command Line Interface Reference
1304
Important:
If this option is used, the name of the IP address pool from which to allocate addresses must be
configured using the
ip address pool-name
command. If no pool name is specified, the system will attempt to
allocate an address from any public pool configured in the destination context.
no-dynamic
Disables the dynamic assignment of IP addresses to PDP contexts using this APN. Default: Disabled
If a PDP context needing an IP address is received by an APN with this option enabled, it will be rejected
with a cause code of 220 (Unknown PDP address or PDP type).
If a PDP context needing an IP address is received by an APN with this option enabled, it will be rejected
with a cause code of 220 (Unknown PDP address or PDP type).
prefer-dhcp-options
If this keyword is specified with
dhcp-proxy
for IP address allocation configuration, the GGSN will prefer
DHCP-supplied parameters over values provided by AAA server or by local configuration. This keyword
controls the following parameters:
controls the following parameters:
primary and secondary Domain Name Server (DNS) addresses
primary and secondary NetBIOS Name Server (NBNS) addresses
These values will be sent out in the PCO IE of a GTP Create PDP Response Message whenever the MS
Requests them in A Create PDP Request Message.
Default: Disabled
Requests them in A Create PDP Request Message.
Default: Disabled
Important:
This keyword is available only with dhcp-proxy ip allocation method as this functionality is
implemented only for GGSN acting as DHCP proxy.
By default, this functionality is disabled. Hence, DNS and NBNS values received from a DHCP server will
not be considered by the GGSN.
not be considered by the GGSN.
allow-deferred
Enables support for P-GW deferred address allocation. Default: Disabled
allow-user-specified
Enables support for PDP contexts requesting the use of specific (static) addresses. Default: Enabled
Important:
If this option is not enabled, PDP contexts requesting the use of a static address will be rejected with
a cause code of 220 (Unknown PDP address or PDP type).
Usage
Use this command to configure the method by which the APN profile will assign IP addresses to PDP
contexts.
When the PDP context is being established and the APN name is determined, the system will examine the
APN’s configuration profile. Part of that procedure is determining how to handle IP address allocation. The
figure in the Example section below displays the process used by the system to determine how the address
should be allocated.
contexts.
When the PDP context is being established and the APN name is determined, the system will examine the
APN’s configuration profile. Part of that procedure is determining how to handle IP address allocation. The
figure in the Example section below displays the process used by the system to determine how the address
should be allocated.
Example
The following command configures the APN to dynamically assign an address from a DHCP server and
reject PDP sessions with static IP addresses:
reject PDP sessions with static IP addresses: