R21xx-HP FlexFabric 11900 Layer 3 IP Services Command Reference

197
Usage guidelines
If the neighbor reachability detection shows that a neighbor is reachable, the device considers the
neighbor reachable within the specified reachable time. If the device must send a packet to the neighbor
after the specified reachable time expires, the device reconfirms whether the neighbor is reachable.
The value specified by this command serves as the neighbor reachable time on the local interface, and
it also serves as the value in the Reachable Time field in RA messages sent by the local interface.
Examples
# Set the neighbor reachable time on VLAN-interface 100 to 10000 milliseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd nud reachable-time 10000
Related commands
display ipv6 interface
ipv6 nd ra halt
Use ipv6 nd ra halt to suppress an interface from advertising RA message.
Use undo ipv6 nd ra halt to disable this function.
Syntax
ipv6 nd ra halt
undo ipv6 nd ra halt
Default
An interface is suppressed from sending RA messages.
Views
Interface view
Predefined user roles
network-admin
Examples
# Disable RA message suppression on VLAN-interface 100.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] undo ipv6 nd ra halt
ipv6 nd ra hop-limit unspecified
Use ipv6 nd ra hop-limit unspecified to specify unlimited hops in RA messages.
Use undo ipv6 nd ra hop-limit unspecified to restore the default.