688
Command Reference for AT-IX5-28GPX High Availability, High Power Video Surveillance PoE Switch
C613-50057-01 REV A
AlliedWare Plus™ Operating System - Version 5.4.5-0.x
IP
V
6 C
OMMANDS
IPV
6
OPPORTUNISTIC
-
ND
ipv6 opportunistic-nd
Overview
Use this command to enable opportunistic neighbor discovery for the global IPv6
ND cache. Opportunistic neighbor discovery changes the behavior for unsolicited
ICMPv6 ND packet forwarding on the device.
Use the
no
variant of this command to disable opportunistic neighbor discovery
for the global IPv6 ND cache.
Syntax
ipv6 opportunistic-nd
no ipv6 opportunistic-nd
Default
Opportunistic neighbor discovery is disabled by default.
Mode
Global Configuration
Usage
When opportunistic neighbor discovery is enabled, the device will reply to any
received unsolicited ICMPv6 ND packets. The source MAC address for the
unsolicited ICMPv6 ND packet is added to the IPv6 ND cache, so the device
forwards the ICMPv6 ND packet. When opportunistic neighbor discovery is
disabled, the source MAC address for the ICMPv6 packet is not added to the IPv6
ND cache, so the ICMPv6 ND packet is not forwarded by the device.
Examples
To enable opportunistic neighbor discovery for the IPv6 ND cache, enter:
awplus#
configure terminal
awplus(config)#
ipv6 opportunistic-nd
To disable opportunistic neighbor discovery for the IPv6 ND cache, enter:
awplus#
configure terminal
awplus(config)#
no ipv6 opportunistic-nd
Related
Commands
arp opportunistic-nd
show ipv6 neighbors
Validation
Commands
show running-config interface