Operation Manual – IPv6
H3C S3610&S5510 Series Ethernet Switches
Chapter 1 IPv6 Basics Configuration
1-17
Parameters
Description
Reachable time
After the neighbor reachability detection shows that a
neighbor is reachable, the device considers the neighbor is
reachable within the reachable time. If the device needs to
send a packet to a neighbor after the reachable time expires,
the device will again confirm whether the neighbor is
reachable.
Note:
The values of the Retrans Timer field and the Reachable Time field configured for an
interface are sent to hosts via RA messages. Furthermore, this interface sends NS
messages at intervals of Retrans Timer and considers a neighbor reachable within the
time of Reachable Time.
Follow these steps to configure parameters related to an RA message:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the
current hop limit
ipv6 nd hop-limit
value
Optional
64 by default.
Enter interface view
interface interface-type
interface-number
—
Disable the RA
message
suppression
undo ipv6 nd ra halt
Optional
By default, RA messages are
suppressed.
Configure the
maximum and
minimum intervals
for sending RA
messages
ipv6 nd ra interval
max-interval-value
min-interval-value
Optional
By default, the maximum
interval for sending RA
messages is 600 seconds, and
the minimum interval is 200
seconds.
The device sends RA
messages at intervals of a
random value between the
maximum interval and the
minimum interval.
The minimum interval should
be less than or equal to 0.75
times the maximum interval.
