C
HAPTER
2
| Initial Switch Configuration
Basic Configuration
– 87 –
3. Type “end” to return to the Privileged Exec mode. Press <Enter>.
4. Wait a few minutes, and then check the IP configuration settings by
typing the “show ip interface” command. Press <Enter>.
5. Then save your configuration changes by typing “copy running-config
startup-config.” Enter the startup file name and press <Enter>.
Console(config)#interface vlan 1
Console(config-if)#ip address dhcp
Console(config-if)#end
Console#show ip interface
VLAN 1 is Administrative Up - Link Up
Address is 00-12-CF-DA-FC-E8
Index: 1001, MTU: 1500
Address Mode is DHCP
IP Address: 192.168.0.2 Mask: 255.255.255.0
Console#copy running-config startup-config
Startup configuration file name []: startup
\Write to FLASH Programming.
\Write to FLASH finish.
Success.
OBTAINING AN IPV6 ADDRESS
Link Local Address — There are several ways to configure IPv6 addresses.
The simplest method is to automatically generate a “link local” address
(identified by an address prefix of FE80). This address type makes the
switch accessible over IPv6 for all devices attached to the same local
subnet.
To generate an IPv6 link local 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. Type “ipv6 enable” and press <Enter>.
Console(config)#interface vlan 1
Console(config-if)#ipv6 enable
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::260:3EFF:FE11:6700/64
Global unicast address(es):
2001:DB8:2222:7272::/64, subnet is 2001:DB8:2222:7272::/64
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
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