25-3
Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 25 Configuring IPv6 Neighbor Discovery
Configuring Neighbor Solicitation Messages
Guidelines and Limitations for the Neighbor Solicitation Message Interval
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context mode.
Firewall Mode Guidelines
Supported in routed mode only. Transparent mode is not supported.
Additional Guidelines and Limitations
The interval value is included in all IPv6 router advertisements sent out this interface.
Default Settings for the Neighbor Solicitation Message Interval
Table 25-1 lists the default settings for neighbor solicitation message parameters.
Configuring the Neighbor Solicitation Message Interval
You can configure the interval between IPv6 neighbor solicitation retransmissions on an interface. Valid
values range from 1000 to 3600000 milliseconds. The default value is 1000 milliseconds. This setting is
also sent in router advertisement messages.
To configure the neighbor solicitation message interval, perform the following steps:
Step 1 Choose Configuration > Device Setup > Interfaces.
Step 2 Choose the interface on which to configure the neighbor solicitation interval. The interface must have
been configured with an IPv6 address. See the “Configuring IPv6 Addresses on an Interface” section on
page 25-6 for more information.
Step 3 Click Edit. The Edit Interface dialog box appears with three tabs: General, Advanced, and IPv6.
Step 4 Click the IPv6 tab.
Step 5 In the NS Interval field, enter the time interval.
Step 6 Click OK.
Step 7 Click Apply to save the configuration.
Table 25-1 Default Neighbor Solicitation Messages Parameters
Parameters Default
value (transmission interval) 1000 seconds between neighbor solicitation
transmissions
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