Amer Networks E5Web GUI - Manual (Page 142)

given the value AcceptLog. This can help identify if the cause is the same IPv6 address moving
between hardware Ethernet addresses.
• NDCacheSize
The neighbor discovery cache provides higher traffic throughput speeds by reducing
neighbor discovery traffic and the time required to process this traffic. The size of the cache
can be adjusted with this setting to suit particular scenarios with different network sizes.
A larger cache means a greater allocation of physical memory. However, if the cache is too
small, items may be discarded because they cannot fit and this will lead to higher latency
times and more neighbor discovery traffic.
•
Timing Settings
There are a number of timing settings associated with neighbor discovery:
NDMulticastSolicit
NDMaxUnicastSolicit
NDBaseReachableTime
NDDelayFirstProbeTime
NDRetransTimer
Lower values for these means that the cache is better able to deal with stray hosts that only
communicate for a short period but it also leads to an increase in neighbor discovery traffic.
In order to increase the time an entry stays in the cache before triggering a time-out or
sending probes, it is recommended to increase the value of NDBaseReachableTime.
All settings relevant to neighbor discovery can be found in the separate cOS Core CLI Reference
Guide under the object name ARPNDSettings.
Chapter 3: Fundamentals
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