| 摘要 |
Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with pre-dropping of a packet if its Time-To-Live (TTL) value is not large enough to reach a destination, such as, but not limited to, its destination if it is a unicast packet, or at least one more destination for a multicast packet. A packet switching device maintains associations between (a) nearest receiving node distances and (b) prefixes or complete addresses. If a packet does not have enough TTL to reach an intended recipient identified by a corresponding nearest receiving node distance, then the packet is dropped even though the TTL has not expired. In this manner, some bandwidth and other network resources are not wasted on traffic that will timeout via the TTL mechanism before reaching a subsequent intended recipient.
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