IPv6 Addressing Commands
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D E L L CO N F I D E N T I A L – P R E L I MI N A RY 5/ 1 5 /1 2 - F O R PR O O F O N LY
User Guidelines
Using the
no
ipv6 link-local address
command removes the manually
configured link local IPv6 address from an interface. Multiple IPv6 addresses
can be configured per interface, but only one link-local address. When the
no
ipv6 link-local address
command is used, the interface is reconfigured with
the standard link local address (the same IPv6 link-local address that is set
automatically when the
enable ipv6
command is used). The system
automatically generates a link-local address for an interface when IPv6
processing is enabled on the interface. To manually specify a link-local
address to be used by an interface, use the
ip
v6 link-local address command.
The system supports only 64 bits prefix length for link-local addresses.
Example
console(config)# interface vlan 1
console(config-if)#
ipv6 address
fe80::123/64
link-local
ipv6 unreachables
Use the
ipv6 unreachables
Interface Configuration mode command to enable
the generation of Internet Control Message Protocol for IPv6 (ICMPv6)
unreachable messages for any packets arriving on a specified interface. Use
the
no
form of this command To prevent the generation of unreachable
messages.
Syntax
ipv6 unreachables
no ipv6 unreachables
Parameters
This command has no arguments or keywords.
Default Configuration
ICMP unreachable messages are sent by default.
Command Mode
Interface Configuration (Ethernet, VLAN, Port-channel) mode.