PDN Gateway Configuration
▀ Configuring the System as a Standalone eGTP P-GW
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
128
Notes:
QCI values 1 through 9 are standard values and are defined in 3GPP TS 23.203.
The above configuration only shows one keyword example. Refer to the
QCI - QOS Mapping Configuration
Mode Commands
chapter in the
Command Line Interface Reference
for more information on the
qci
command
and other supported keywords.
Verifying and Saving the Configuration
Save your configuration to flash memory, an external memory device, and/or a network location using the Exec mode
command
save configuration
. For additional information on how to verify and save configuration files, refer to the
System Administration Guide
and the
Command Line Interface Reference
.
DHCP Service Configuration
The system can be configured to use the Dynamic Host Control Protocol (DHCP) to assign IP addresses for PDP
contexts. IP address assignment using DHCP is done using the following method, as configured within an APN:
DHCP-proxy
: The system acts as a proxy for client (MS) and initiates the DHCP Discovery Request on behalf of client
(MS). Once it receives an allocated IP address from DHCP server in response to DHCP Discovery Request, it assigns
the received IP address to the MS. This allocated address must be matched with the an address configured in an IP
address pool on the system. This complete procedure is not visible to MS.
As the number of addresses in memory decreases, the system solicits additional addresses from the DHCP server. If the
number of addresses stored in memory rises above the configured limit, they are released back to the DHCP server.
There are parameters that must first be configured that specify the DHCP servers to communicate with and how the IP
address are handled. These parameters are configured as part of a DHCP service.
Important:
This section provides the minimum instruction set for configuring a DHCP service on system for
DHCP-based IP allocation. For more information on commands that configure additional DHCP server parameters and
working of these commands, refer to the
DHCP Service Configuration Mode Commands
chapter of
Command Line
Interface Reference
.
These instructions assume that you have already configured the system level configuration as described in
System
Administration Guide
and P-GW service as described in
eGTP P-GW Configuration
section of this chapter.
To configure the DHCP service:
Step 1
Create the DHCP service in system context and bind it by applying the example configuration in the
DHCP Service
Creation
section.
Step 2
Configure the DHCP servers and minimum and maximum allowable lease times that are accepted in responses from
DHCP servers by applying the example configuration in the
DHCP Server Parameter Configuration
section.
Step 3
Verify your DHCP Service configuration by following the steps in the
DHCP Service Configuration Verification
section.
Step 4
Save your configuration as described in the
Verifying and Saving Your Configuration
chapter.
