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ipv6 neighbors max-learning-num max-number
By default, an interface can learn a maximum of 512 dynamic neighbor entries.
Setting the aging timer for ND entries in stale state
About the aging timer for ND entries in stale state
ND entries in stale state have an aging timer. If an ND entry in stale state is not refreshed before the
timer expires, the ND entry changes to the delay state. If it is still not refreshed in 5 seconds, the ND
entry changes to the probe state, and the device sends an NS message three times. If no response
is received, the device deletes the ND entry.
Procedure
1. Enter system view.
system-view
2. Set the aging timer for ND entries in stale state.
ipv6 neighbor stale-aging aging-time
The default setting is 240 minutes.
Minimizing link-local ND entries
About minimizing link-local ND entries
Perform this task to minimize link-local ND entries assigned to the hardware. Link-local ND entries
refer to ND entries that contain link-local addresses.
By default, the device assigns all ND entries to the hardware. With this feature enabled, the newly
learned link-local ND entries are not assigned to the hardware if the link-local addresses of the
entries are not the next hops of any routes. This feature saves hardware resources.
This feature takes effect only on newly learned link-local ND entries.
Procedure
1. Enter system view.
system-view
2. Minimize link-local ND entries.
ipv6 neighbor link-local minimize
By default, the device assigns all ND entries to the hardware.
Setting the hop limit
About hop limit
You can set the hop limit value to fill in the Hop Limit field for IPv6 packets to be sent.
Procedure
1. Enter system view.
system-view
2. Set the value for the Hop Limit field in the IP header.
ipv6 hop-limit value
The default setting is 64.
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