3Com S7902E, Руководство по настройке

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To do… Use the command… Remarks
Set the M flag bit to 1
ipv6 nd autoconfig
managed-address-flag
Optional
By default, the M flag bit is set to 0,
that is, hosts acquire IPv6
addresses through stateless
autoconfiguration.
Set the O flag bit to 1
ipv6 nd autoconfig
other-flag
Optional
By default, the O flag bit is set to 0,
that is, hosts acquire other
information through stateless
autoconfiguration.
Configure the router lifetime
in RA messages ipv6 nd ra router-lifetime
value
Optional
1800 seconds by default.
Set the NS retransmission
timer ipv6 nd ns retrans-timer
value
Optional
By default, the local interface sends
NS messages at an interval of 1000
milliseconds, and the value of the
Retrans Timer field in RA messages
sent by the local interface is 0.
Set the reachable time
ipv6 nd nud
reachable-time value
Optional
By default, the neighbor reachable
time on the local interface is 30000
milliseconds, and the value of the
Reachable Timer field in RA
messages is 0.
z
The maximum interval for sending RA messages should be less than or equal to the router lifetime
in RA messages.
z
In VRRP networking, the source MAC address in an NA message is always different from that in
the link layer address option at present, and therefore the consistency check on the MAC address
of ND packets cannot be enabled.
Configuring the Maximum Number of Attempts to Send an NS Message for DAD
An interface sends a neighbor solicitation (NS) message for duplicate address detection 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 sent attempts reaches a configurable threshold, the acquired address is
considered usable.
Follow these steps to configure the attempts to send an NS message for DAD:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—