CLI Reference Guide-R05

Chapter 1 | Initial Switch Configuration
Basic Configuration
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Address for Multi-segment Network — To generate an IPv6 address that can be
used in a network containing more than one subnet, the switch can be configured
to automatically generate a unique host address based on the local subnet address
prefix received in router advertisement messages. (DHCP for IPv6 will also be
supported in future software releases.)
To dynamically generate an IPv6 host address for the switch, complete the
following steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to access
the interface-configuration mode. Press <Enter>.
2. From the interface prompt, type “ipv6 address autoconfig” and press <Enter>.
3. Type “ipv6 enable” and press <Enter> to enable IPv6 on an interface that has
not been configured with an explicit IPv6 address.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address autoconfig
Console(config-if)#ipv6 enable
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
fe80::260:3fff:fe11:6700/64
Global unicast address(es):
2001:db8:2222:7272:2e0:cff:fe00:fd/64, subnet is 2001:db8:2222:7272::/
64[AUTOCONFIG]
valid lifetime 2591978 preferred lifetime 604778
Joined group address(es):
ff02::1:ff00:0
ff02::1:ff11:6700
ff02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised router lifetime is 1800 seconds
Console#
Downloading a
Configuration File
Referenced by a DHCP
Server
Information passed on to the switch from a DHCP server may also include a
configuration file to be downloaded and the TFTP servers where that file can be
accessed. If the Factory Default Configuration file is used to provision the switch at
startup, in addition to requesting IP configuration settings from the DHCP server, it
will also ask for the name of a bootup configuration file and TFTP servers where
that file is stored.
If the switch receives information that allows it to download the remote bootup file,
it will save this file to a local buffer, and then restart the provision process.