Cisco Cisco Packet Data Gateway (PDG) Ratgeber Für Administratoren
System Operation and Configuration
Terminology ▀
Cisco ASR 5000 System Administration Guide ▄
21
Bindings
A binding is an association between elements within the system. There are two types of bindings: static and dynamic.
Static binding is accomplished through system configuration. Static bindings associate:
A specific logical interface (configured within a particular context) to a physical port. Once the interface is
bound, traffic can flow through the context as if it were any physically-defined circuit. Static bindings support
any encapsulation method over any interface and port type.
any encapsulation method over any interface and port type.
A service to an IP address assigned to a logical interface within the same context. This allows the interface to
take on the characteristics (that is, support the protocols) required by the service.
Dynamic binding associates a subscriber to a specific egress context based on the configuration of their profile or
system parameters. This provides a higher degree of deployment flexibility, as it allows a wireless carrier to support
multiple services and facilitates seamless connections to multiple networks.
system parameters. This provides a higher degree of deployment flexibility, as it allows a wireless carrier to support
multiple services and facilitates seamless connections to multiple networks.
Management ports can only be bound in the local context. Traffic or subsciber ports can only be bound in a non-local
context.
context.
Services
Configure services within a context to enable certain functionality. The following are examples of services you can
configure on the system, subject to licensing availability and platform type:
configure on the system, subject to licensing availability and platform type:
Gateway GPRS Support Node (GGSN) services
Serving GPRS Support Node (SGSN) Services
Packet Data Serving Node (PDSN) services
Foreign Agent (FA) services
Home Agent (HA) services
Layer 2 Tunneling Protocol Access Concentrator (LAC) services
Dynamic Host Control Protocol (DHCP) services
Access Service Network Gateway (ASN-GW) services
ASN Paging Controller and Location Registry services
Packet Data Interworking Function (PDIF) services
Session Control Manager (SCM) services (P-CSCF, S-CSCF, A-BG)
Mobility Management Entity (MME) Services
PDN Gateway (P-GW) Services
Serving Gateway (S-GW) Services
Home-NodeB Gateway (HNB-GW) Services
Evolved Packet Data Gateway (ePDG)
Intelligent Policy Control Function (IPCF) Services (PCC-Service, PCC-Policy, PCC-AF)