CISCO-GGSN-MIB
This MIB module manages the Gateway GPRS Support Node (GGSN) devices. A GGSN device provides interworking with external packet-data network of a particular GPRS service provider. It provides a combination of IP routing and GPRS specific functionality to support mobile users. GTP version1 is introduced in UMTS release 99 and Cisco GGSN will support both GTP version 1 (GTP v1) and version zero (GTP v0) simultaneously. GTP v1 supports multiple PDP contexts sharing one IP address. TFTs are introduced to achieve this. Each TFT is associated with a PDP context and there may exist one PDP context without TFT amongst all PDP contexts sharing the same IP address. Each TFT has one to eight packet filters each assigned with a precedence index. These packet filters are evaluated one at a time against the packet header information in sequence of their precedence index. A match is claimed if all the filters are matched and the PDP context that the TFT belongs to will be selected, else the checks are performed against the filters of another PDP context. If the packet header doesn't contain any TFT packet filter information, then the PDP context without the TFT is selected for further processing. Note on notifications: When an alarm occurs on the device, if the alarm's severity is higher than the severity filter threshold, a notification is generated by the device; and if cGgsnNotifEnabled is 'true', then the device's SNMP-engine configuration will be searched to determine where to send the notification. Acronyms and terms: APN Access Point Name CSG Content Service Gateway CDR Charging Data Record DCCA Diameter Credit Control Application ETSI European Telecommunications Standards Institute GGSN Gateway GPRS Support Node GPRS General Packet Radio Service GSM Global System for Mobile communication GTP GPRS Tunneling Protocol G-PDU GTP PDU IE Information Element MS Mobile Station MSISDN Mobile Station ISDN number PDP Packet Data Protocol PDU Protocol Data Unit PLMN Public Land Mobile Network SGSN Serving GPRS support Node SLB Server Load Balancing TFT Traffic Flow Template T-PDU the payload of G-PDU UMTS Universal Mobile Telecommunications System IMS IP Multimedia Subsystem COPS Common Open Policy Service protocol PEP Policy Enforcement Point PDF Policy Decision Function P-CSCF Proxy Call Session Control Function PLMN Public Land Mobile Network QS Quota Server UE User Equipment REFERENCE [1] GSM 03.60: Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); Service description; Stage 2. V7.1.0 [2] GSM 09.60: Digital cellular telecommunication system (Phase 2+); General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across Gn and Gp Interface. V7.3.0 [3] 3GPP; Technical Specification Group Services and System Aspects; QoS Concept and Architecture. 3G TS 23.107 v3.2.0. [4] 3GPP; Technical Specification Group Core Network; General Packet Radio Service(GPRS); GPRS Tunnelling Protocol (GTP) across Gn and Gp Interface (Release 1999). 3G TS 29.060 v3.5.0. [5] 3GPP: Technical Specification Group Core Network; Policy control over Go interface (Release 5). 3GPP TS 29.207 V5.2.0