UMN:CLI
User Manual
V8102
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3600000>
[VLAN/MGMT
/LO]
0-3600000: IPv6 reachable time in milliseconds (A
value of 0 indicates that the configured time is un-
specified by this switch.)
no ipv6 nd reachable-time
Deletes a configured reachable time and restores the
default time.
If the switch is configured with shorter reachable times, it enables detecting unavailable
neighbors more quickly, however, shorter times consume more IPv6 network bandwidth
and processing resources in all IPv6 network devices. We do not recommend configuring
a short reachable time value.
For example, to configure the reachable time of 1000 milliseconds for Ethernet interface br2,
enter the following commands:
SWITCH(config)#
interface br2
SWITCH(config-if)#
ipv6 nd reachable-time
1000
SWITCH(config-if)#
8.2.6
RA Suppression
If IPv6 unicast routing is enabled on an Ethernet interface, by default, this interface sends
IPv6 router advertisement messages. However, by default, non-LAN interface types, for
example, tunnel interfaces, do not send router advertisement messages.
To control transmission of IPv6 RA messages on the interface, use the following com-
mand.
Command
Mode
Description
ipv6 nd suppress-ra
Interface
[VLAN/MGMT
/LO]
Disables the sending of RA messages on an Ethernet
interface.
no ipv6 nd suppress-ra
Sends RA messages on an interface.
8.2.7
Hop Limit
To configure the maximum number of hops used in RA messages and all IPv6 packets,
use the following command.
Command
Mode
Description
ipv6 nd ra-hoplimit
<0-255>
Interface
[VLAN/MGMT
/LO]
Configures the maximum number of hops in RA mes-
sages.
0-255: RA hop limit
no ipv6 nd ra-hoplimit
Returns the hop limit to its default value.
8.2.8
Retrans-time
To configure the interval between IPv6 neighbor solicitation retransmissions on an inter-
face, use the following command.
Command
Mode
Description
i