Alcatel AST570, Руководство пользователя

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CIP operation
Classical IP and
AST570
Configuration and
operation example
12 Configuration and Use - CIP & IP Routing
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3EC 17766 AAAA TCZZA Ed. 04
12.3 Using CIP & IP Routing
Similar to classical LAN networking CIP & IP Routing adheres to
the "alwayson" concept.
IP packets sourced by local PCs, arrive via the Ethernet segment in
the AST570 . 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 12.2.7, this would
be 172.16.1.2, or thus
ping 172.16.1.2
.
The IP router in the AST570 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 AST570
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