Chapter 26
| IP Interface Commands
Neighbor Discovery
– 677 –
Command Usage
This command specifies the interval between transmitting neighbor solicitation
messages when resolving an address, or when probing the reachability of a
neighbor. Therefore, avoid using very short intervals for normal IPv6 operations.
Example
The following sets the interval between sending neighbor solicitation messages to
30000 milliseconds:
Console(config)#interface vlan 1
Console(config)#pv6 nd ns-interval 30000
Console(config)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled
Link-local address:
FE80::200:E8FF:FE90:0/64
Global unicast address(es):
2009:DB9:2229::79, subnet is 2009:DB9:2229:0::/64
Joined group address(es):
FF01::1/16
FF02::1/16
FF02::1:FF00:79/104
FF02::1:FF90:0/104
IPv6 link MTU is 1500 bytes.
ND DAD is enabled, number of DAD attempts: 5.
ND retransmit interval is 1000 milliseconds
ND reachable time is 30000 milliseconds
Console#
Related Commands
show running-config (96)
ipv6 nd raguard This command blocks incoming Router Advertisement and Router Redirect
packets. Use the no form to disable this feature.
Syntax
[no] ipv6 nd raguard
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ IPv6 Router Advertisements (RA) convey information that enables nodes to
auto-configure on the network. This information may include the default router
address taken from the observed source address of the RA message, as well as
on-link prefix information. However, unintended misconfigurations, or possibly
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