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Charging Characteristics
GTPC Characteristics
Timers And QoS
Step 4Choose Charging Characteristics to view the properties on the right pane. See Table 27-3 for more 
details on the charging characteristics configured for the GGSN.
Step 5Under the GGSN node, choose Timers and QoS to view the properties on the right pane. See Table 27-4 
for more details on the Timers and QoS parameters...

  
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GGSN Commands
The following GGSN-related commands can be launched from the inventory by right-clicking a GGSN 
and choosing GGSN> Commands > Configuration. Your permissions determine whether you can run 
these commands (see Permissions Required to Perform Tasks Using the Prime Network Clients). To find 
out if a device supports these commands, see the Cisco Prime Network 4.3.2 Supported...

  
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Working with the GPRS Tunneling Protocol User Plane (GTPU)
The GGSN communicates with SGSNs on a Public Land Mobile Network (PLMN) using the GPRS 
Tunneling Protocol (GTP). The signaling or control aspect of this protocol is referred to as the GTP 
Control Plane (GTPC) while the encapsulated user data traffic is referred to as the GTP User Plane 
(GTPU). GTPU is used for transferring...

  
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Table 27-7 describes the IP address details available for each GTPU.
GTPU Commands
The following GTPU-related commands can be launched from the inventory by right-clicking a GTPU 
and choosing Commands > Configuration. Your permissions determine whether you can run these 
commands (see Permissions Required to Perform Tasks Using the Prime Network Clients). To find out 
if a device...

  
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Working with Access Point Names (APNs)
APN is the access point name that is configured in the GGSN configurations. The GGSN’s APN support 
offers the following benefits:
Extensive parameter configuration flexibility for the APN.
Extensive QoS support.
Virtual APNs to allow differentiated services within a single APN. The APN that is supplied by the 
mobile station is evaluated by the...

  
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Tunneling: PPP may be tunneled with L2TP. IPv4 may be tunneled with GRE, IP-in-IP or L2TP. 
Load-balancing across multiple tunnels. IPv6 is tunneled in IPv4. Additional tunneling techniques, 
such as, IPsec and VLAN tagging may be selected by the APN, but are configured in the GGSN 
independently from the APN. 
QoS: IPv4 header ToS handling. Traffic rate limits for different 3GPP...

  
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Step 3To view additional details configured for the APN, use the following tabs: 
Vi r t u a l  A P N s—A virtual APN is a non-physical entity that represents an access point that does not 
itself provide direct access to a real target network. A virtual APN can be used to consolidate access 
to multiple, physical target networks through a single access point.
QCI to DSCP Mapping—Shows...

  
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Table 27-10 Additional Configuration Details for APN
Field Description
Virtual APNs
Preference Specifies the order in which the referenced APNs are compared by the 
system. Can be configured to any integer value from 1 (highest priority) to 
1000 (lowest priority).
APN Specifies the name of an alternative APN configured on the system that is to 
be used for PDP contexts with matching...

  
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Allocation retention 
priorityIndicates the priority of allocation and retention of the service data flow. This 
parameter allows prioritizing allocation of resources during bearer 
establishment and modification. During network traffic congestions, a lower 
ARP flow is dropped to free up the capacity.
DSCP Denotes a mechanism for classifying and managing network traffic and 
providing...

  
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Viewing Additional Characteristics of an APN
To view additional characteristics of an APN:
Step 1Right-click the required device in the Vision client and choose Inventory. 
Step 2In the Logical Inventory window, choose Logical Inventory > Context> Mobile > APN Container> 
APN. Peak Data Rate The peak data rate allowed, in bytes, for the uplink direction and QoS traffic 
class....