# PS-Network-GTPU Schema Statistics

The PS-Network-GTPU schema provides operational statistics that can be used for monitoring and troubleshooting the following products: HNB-GW.
This schema provides the following types of statistics:

- Counter: A counter records incremental data cumulatively and rolls over when the counter limit is reached. All counter statistics are cumulative and reset only by one of the following methods: roll-over when limit is reached, after a system restart, or after a clear command is performed. The limit depends upon the data type.
- Gauge: A gauge statistic indicates a single value; a snapshot representation of a single point in time within a defined time frame. The gauge changes to a new value with each snapshot though a value may repeat from one period to the next. The limit depends upon the data type.
- Information: This type of statistic provides information, often intended to differentiate sets of statistics; for example, a VPN name or IP address. The type of information provided depends upon the data type.

The data type defines the format of the data for the value provided by the statistic. The following data types are used in statistics for this schema:

- Int32/Int64: An integer, either 32-bit or 64-bit: For statistics with the Int32 data type, the roll-over to zero limit is 4,294,967,295. For statistics with the Int64 data type, the roll-over to zero limit is 18,446,744,073,709,551,615.
- Float: A numeric value that can be represented fractionally; for example, 1.345.
- String: A series of ASCII alphanumeric characters in a single grouping, usually pre-configured.

IMPORTANT:

Unless otherwise indicated, all statistics are counters and all statistics are standards-based.

Key Variables: Every schema has some variables which are typically referred to as 'key variables'. These key variables provide index markers to identify which object the statistics apply to. For example, in the card schema, the card number (variable %card%) uniquely identifies a card. For an HA service, the keys would be "%vpnname%" plus "%servname%", as the combination uniquely identifies an HA service. So, in a given measurement interval, one row of statistics will be generated per unique key. The schema keys are identified in the Description section of the table.
Table 1. Bulk Statistic Variables in the PS-Network-GTPU Schema

Variables | Description | Data Type
--- | --- | ---
nwname | Indicates the name of the Packet Switch (PS) Network connected with specific HNB-GW on which statistics are collected or displayed. This is a key variable. | String
dest-pt-code | Indicates the destination point code in SS7 notation of SGSN in core network connected with specific HNB-GW of which statistics are collected or displayed. This is a key variable. | String
gtpu-pkt-rx | Indicates the total number of packets received by HNB-GW from SGSN over GTP-U connection. Trigger: Increments when a packet received by HNB-GW from CN. Availability: Across PS Networks | Unsigned Int64
gtpu-pkt-tx | Indicates the total number of packets sent by HNB-GW towards SGSN over GTP-U connection. Trigger: Increments when a GTP-U packet sent by HNB-GW to CN. Availability: Across PS Networks | Unsigned Int64
gtpu-bytes-rx | Indicates the total number of bytes received by HNB-GW from SGSN over GTP-U connection. Trigger: Increments when a byte received by HNB-GW from CN. Availability: Across PS Networks | Unsigned Int64
gtpu-bytes-tx | Indicates the total number of bytes sent by HNB-GW towards SGSN over GTP-U connection. Trigger: Increments when a byte sent by HNB-GW to CN. Availability: Across PS Networks | Unsigned Int64
IMPORTANT: For information on statistics that are common to all schema see the Statistics and Counters Overview chapter.