Alcatel SPEED TOUCH PRO, User Manual

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CIP operation
Classical IP and STPro
Configuration and
operation example
10 Configuration and Use - CIP & IP Routing
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3EC 17059 ABAA TCZZA Ed. 01
10.3 Using CIP & IP Routing
Similar to classical LAN networking, CIP adheres to the
"alwayson" concept.
IP packets sourced by local PCs, arrive via the Ethernet segment in
the STPro . The latter makes routing decisions based on the
destination IP address of the packet. If the packet ends up in the
CIP member it will on its turn determine to which VC it has to
output the packet.
You can check IP connectivity from any PC on the local Ethernet
segment. Therefor, ping the IP address at the far end of the virtual
connection; e.g. for the example of subsection 10.2.7, this would
be 172.16.1.2, or thus
ping 172.16.1.2
.
The IP router in the STPro forwards packets between the Ethernet
port and the Classical IP entity sitting on top of the DSL/ATM port.
In turn, the CIP entity determines which VC it has to output the
packet to, prior to ATM encapsulation.
The figure below provides an overview of the STPro reartofront
end Classical IP operation:
Virtual Channels
VPI/VCI:8/80
VPI/VCI:8/81
VPI/VCI:8/82
VPI/VCI:8/83
Virtual Channel Resolving,
ATM encapsulation
IP Routing
IP Packet
Ethernet
CIP
Member