Configuring The Number Of Attempts To Send An Ns Message For Dad; Configuring Pmtu Discovery - H3C S3610-28P Operation Manual

Operation Manual – IPv6
H3C S3610&S5510 Series Ethernet Switches

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
the smaller one between the two values, the host fragments the packet according to the
smaller value.
Follow these steps to configure a static PMTU for a specified address:
Enter system view
Configure a static PMTU
for a specified IPv6
address
1.5.2 Configuring the Aging Time for PMTU
After the MTU of the path from the source host to the destination host is dynamically
determined (refer to
packets to the destination host on basis of this MTU. After the aging time expires, the
To do...
system-view
interface interface-type
interface-number
ipv6 nd dad attempts
value
To do...
system-view
ipv6 pathmtu
ipv6-address [ value ]
IPv6 PMTU
Chapter 1 IPv6 Basics Configuration
Use the command...
Use the command...
Discovery), the source host sends subsequent
1-19
Remarks
—
—
Optional
1 by default. When the
value argument is set to 0,
DAD is disabled.
Remarks
—
Required
By default, no static
PMTU is configured.