IPv6 Commands
OL-32830-01 Command Line Interface Reference Guide
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Example 3. The following example deletes all static entries in the IPv6 neighbor
discovery cache on VLAN 1:
switchxxxxxx(config)#
no ipv6 neighbor
vlan1
Example 4. The following example deletes all static entries in the IPv6 neighbor
discovery cache on all interfaces:
switchxxxxxx(config)#
no ipv6 neighbor
27.12 ipv6 unreachables
Use the ipv6 unreachables command in Interface Configuration mode to enable
the generation of Internet Control Message Protocol for IPv6 (ICMPv6)
unreachable messages for any packets arriving on a specified interface.
To prevent the generation of unreachable messages, use the no form of this
command.
Syntax
ipv6 unreachables
no ipv6 unreachables
Parameters
N/A.
Default Configuration
The sending of ICMP IPv6 unreachable messages is enabled.
Command Mode
Interface Configuration mode
User Guidelines
If the switch receives a Unicast packet destined for itself that uses a protocol it
does not recognize, it sends an ICMPv6 unreachable message to the source.
Summary of Contents for 300 Series
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