Glossary
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TAINY iQ
GPRS
GPRS is the abbreviation for "General Packet Radio Service" and a data
transfer system of GSM2+ mobile radio systems. GPRS systems use the
base station of the GSM network for the radio technology and an internal
infrastructure for the networking and coupling to other IP networks, such as
the internet. In the process, data is communicated packet-oriented, wherein
the internet protocol (IP) is used. GPRS provides data rates of up to 115.2
KBit/s.
GRE
Via the TAINY IQ-LTE independent (sub-) networks can be connected. For
that purpose the TAINY IQ-LTE uses the GRE (=Generic Routing
Encapsulation) protocol (RFC 1701; RFC 1702; RFC 2784).
GRE-VPN
TAINY iQ
TAINY iQ
TAINY iQ
Router
Sub-
Net
Sub-
Net
Sub-
Net
Sub-
Net
GRE-IP
NHRP spoke
GRE-IP
NHRP spoke
GRE-IP
NHRP spoke
GRE-IP
WAN-IP
NHRP hub
The (sub-) networks require a GRE-capable router (e.g. the TAINY IQ-LTE),
to create a DM VPN among themselves.
From one (sub-) network an address of another (Sub-) network can be
directly addressed provided a corresponding route is configured.
As the GRE protocol establishes 1:1 tunnels between endpoints only, the
DM VPN is organized like a NBMA (=Nonbroadcast Multiple Access)
network. Inside this virtual network, data are transmitted directly from
endpoint to endpoint or across a switching device.
By using the NHRP (=Next Hop Resolution Protocol) the addresses of the
endpoints (NHRP spokes) are collected at one endpoint acting as a NHRP
hub, which shares this information on request.
In a DM VPN one GRE endpoint (e.g. the router of the central site) must
operate in hub mode, while other GRE endpoints (e.g. TAINY IQ-LTE)
operates in spoke mode.
All spokes in the DM VPN must know the WAN IP address as well as the
DM VPN IP address of the hub.
If the hub receives data, which is not addressed to its own directly
connected (sub-) network, it either forwards the data to the addressed
endpoint in the DM VPN or the hub informs the sender, how to contact the
addressed endpoint directly.
The GRE protocol does cover neither authentication nor encryption. This
can be done by an additional IPsec layer.
GSM
GSM (= Global System for Mobile Communication) is a worldwide standard
for digital mobile radio networks. In addition to the voice service for
telephony, GSM supports various data services, such as fax, SMS, CSD and
GPRS. Depending on legal regulations in various countries, the frequency
bands 900 MHz, 1800 MHz or 850 MHz and 1900 MHz are used.
Summary of Contents for TAINY IQ-LTE
Page 1: ...TAINY IQ LTE User Manual ...
