Bug 1744 - IPv6 NDisc cache does not report dropped packets
IPv6 NDisc cache does not report dropped packets
Product: ns-3
Classification: Unclassified
Component: ipv6
All All
: P5 enhancement
Assigned To: Tommaso Pecorella
Depends on:
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Reported: 2013-08-06 17:23 EDT by Tommaso Pecorella
Modified: 2013-08-06 17:23 EDT (History)
1 user (show)

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Description Tommaso Pecorella 2013-08-06 17:23:25 EDT
Packets dropped by NDisc cache due to internal queue limits are not added to any trace.

This is not a dramatic problem, as the queue limit is much larger for NDisc Cache w.r.t. ARP cache. ARP cache "PendingQueueSize" default is 3 packets for *all* the pending packets, while NDisc queue limit "UnresolvedQueueSize" is 3 packets for each pending request (thus, each destination address).

In order to hit the limit, one should send a batch of 4 or more packets to the same destination. Unlikely happening.

Still, they should be logged.