Руководство Пользователя для Netopia 3220-h
Cayman 3220-H User’s Guide
How Your Cayman 3220-H Works
December 2000
C-15
When the host receives the Confirmation packet from the Access
Concentrator, negotiations are concluded and they can proceed to
the PPP Session stage.
Concentrator, negotiations are concluded and they can proceed to
the PPP Session stage.
PPP Session Stage
Once the PPPoE session is operative, the host and Access
Concentrator exchange PPP packets using the unique session
identifier they negotiated during discovery.
Concentrator exchange PPP packets using the unique session
identifier they negotiated during discovery.
An Access Concentrator may periodically send ICMP Echo-Request
packets to the host to verify connectivity. This serves to identify
situations where a host terminates a session without sending a
Terminate-Request packet (described in the next section), since the
Access Concentrator might not otherwise be able to determine that
the session is no longer functional.
packets to the host to verify connectivity. This serves to identify
situations where a host terminates a session without sending a
Terminate-Request packet (described in the next section), since the
Access Concentrator might not otherwise be able to determine that
the session is no longer functional.
At any time after they have established a PPP session, either the host
or the Access Concentrator can terminate the session by sending the
other a PPPoE Active Discovery Terminate (PADT) packet. When this
occurs, no further PPP traffic, including standard PPP termination
traffic, is permitted between the host and the Access Concentrator.
or the Access Concentrator can terminate the session by sending the
other a PPPoE Active Discovery Terminate (PADT) packet. When this
occurs, no further PPP traffic, including standard PPP termination
traffic, is permitted between the host and the Access Concentrator.