Bindings - Cisco ASR 5000 Series Administration Manual

▀ Terminology
One or more Ga interfaces can be configured per system context. Ga interfaces are bound to ports on either the
Ethernet 10/100 or Ethernet 1000 Line Cards or on the QGLC (ASR 5000 only).
Gc: This is the interface used by the GGSN to communicate with the Home Location Register (HLR) via a GTP-
to-MAP (Mobile Application Part) protocol convertor. This interface is used for network initiated PDP
contexts.
For network initiated PDP contexts, the GGSN will communicate with the protocol convertor using GTP. The
convertor, in turn, will communicate with the HLR using MAP over Signalling System 7 (SS7).
One Gc interface can be configured per system context. Gc interfaces are bound to ports on either the Ethernet
10/100 or Ethernet 1000 Line Cards or on the QGLC (ASR 5000 only).
Gi: This is the interface used by the GGSN to communicate with packet data networks (PDNs) external to the
PLMN. Examples of PDNs are the Internet or corporate intranets.
Additionally, inbound packets received on this interface could initiate a network requested PDP context if the
intended MS is not currently connected.
One or more Gi interfaces can be configured per system context. Gi interfaces are bound to ports on either the
Ethernet 10/100 or Ethernet 1000 Line Cards or on the QGLC (ASR 5000 only).
Gp: This is the interface used by the GGSN to communicate with GPRS support nodes (GSNs, e.g. GGSNs
and/or SGSNs) on different PLMNs. Within the system, a single interface can serve as both a Gn and a Gp
interface.
One or more Gn/Gp interfaces can be configured per system context. Gp interfaces are bound to ports on either
the Ethernet 10/100 or Ethernet 1000 Line Cards or on the QGLC (ASR 5000 only).
AAA: This is the interface used by the GGSN to communicate with either an authentication or accounting server
on the network using the Remote Authentication Dial In User Service (RADIUS) protocol.
This is an optional interface that can be by the GGSN for subscriber PDP context authentication or accounting.
AAA interfaces are bound to ports on either the Ethernet 10/100 or Ethernet 1000 Line Cards or on the QGLC
(ASR 5000 only).
S6b: This is an optional Diameter protocol-based interface over which the GGSN communicates with 3G
AAA/HSS in LTE/SAE network for subscriber authorization.
DHCP: This is the interface used by the GGSN to communicate with a Dynamic Host Control Protocol (DHCP)
Server. The system can be configured to dynamically provide IP addresses for PDP contexts from the DHCP
server.
DHCP interfaces are bound to ports on either the Ethernet 10/100 or Ethernet 1000 Line Cards or on the QGLC
(ASR 5000 only).

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 the configuration of the system. Static bindings are used to associate:
▄ Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide
Important:
This interface is supported through license-enabled feature. For more information
on this support, refer Common Gateway Access Support in guide.
Understanding the Service Operation
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