von kogel » Mi 23 Mai, 2001 15:14
<HTML>Hab mich auch mal deswegen gewundert und jemandem aus dem Forum, der vor einiger Zeit diese Frage hatte, eine mail geschrieben.
Hier ein kleines Zitat aus der Antwort:
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Das sind Multicast-LOGs der "neuen" A-Online Router und nicht
weiter schlimm, also keine potentiellen Hackattacken. Ich
hoffe Du weiĂźt was Multicastpakete sind?
+++++ schnipp +++++
PIM routers periodically send Hello messages to discover neighboring PIM
routers. Hello messages are multicast using the address 224.0.0.13
(ALL-PIM-ROUTERS group). A Holdtime field specifies how long the information
is valid. Routers don't send any acknowledgement that a Hello message was
received. Also, unlike some other protocols, such as DVMRP, when a Hello
message is received, its interface is not automatically added to the list of
outgoing interfaces for forwarding multicast traffic. PIM-SM uses an
explicit join model; a downstream receiver must join a group before traffic
is forwarded on the interface.
+++++ schnapp +++++
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gruesse
kogel</HTML>