Configuring The Number Of Attempts To Send An Ns Message For Dad; Configuring Pmtu Discovery; Configuring A Static Pmtu For A Specified Ipv6 Address - H3C S5500-SI Series Operation Manual

Operation Manual – IPv6
H3C S5500-SI Series Ethernet Switches
Set the reachable time
Caution:
The maximum interval for sending RA messages should be less than or equal to the
router lifetime in RA messages.

1.4.4 Configuring the Number of Attempts to Send an NS Message for DAD

An interface sends a neighbor solicitation (NS) message for DAD after acquiring an
IPv6 address. If the interface does not receive a response within a specified time
(determined by the ipv6 nd ns retrans-timer command), it continues to send an NS
message. If it still does not receive a response after the number of attempts to send an
NS message reaches the maximum, the acquired address is considered available.
Follow these steps to configure the attempts to send an NS message for DAD:
Enter system view
Enter interface view
Configure the number of
attempts to send an NS
message for DAD

1.5 Configuring PMTU Discovery

1.5.1 Configuring a Static PMTU for a Specified IPv6 Address

You can configure a static PMTU for a specified destination IPv6 address. When a
source host sends packets through an interface, it compares the interface MTU with the
static PMTU of the specified destination IPv6 address. If the packet size is larger than
To do...
ipv6 nd nud
reachable-time value
To do...
system-view
interface interface-type
interface-number
ipv6 nd dad attempts
value
Chapter 1 IPv6 Basics Configuration
Use the command...
Use the command...
1-19
Remarks
Optional
By default, the neighbor
reachable time on the
local interface is 30,000
milliseconds and the
Reachable Timer field in
RA messages is 0.
Remarks
—
—
Optional
1 by default. When the
value argument is set to 0,
DAD is disabled.