C
HAPTER
2
| Initial Switch Configuration
Basic Configuration
– 64 –
To generate an IPv6 global unicast 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 ipv6-address” or
“ipv6 address ipv6-address/prefix-length,” where “prefix-length”
indicates the address bits used to form the network portion of the
address. (The network address starts from the left of the prefix and
should encompass some of the ipv6-address bits.) The remaining bits
are assigned to the host interface. Press <Enter>.
3. Type “exit” to return to the global configuration mode prompt. Press
<Enter>.
4. To set the IP address of the IPv6 default gateway for the network to
which the switch belongs, type “ipv6 default-gateway gateway,” where
“gateway” is the IPv6 address of the default gateway. Press <Enter>.
ES-3052G(config)#interface vlan 1
ES-3052G(config-if)#ipv6 address 2001:DB8:2222:7272::/64
ES-3052G(config-if)#exit
ES-3052G(config)#ipv6 default-gateway 2001:DB8:2222:7272::254
ES-3052G(config)end
ES-3052G#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
ES-3052G#show ipv6 default-gateway
ipv6 default gateway: 2001:DB8:2222:7272::254
ES-3052G#
DYNAMIC CONFIGURATION
Obtaining an IPv4 Address
If you select the “bootp” or “dhcp” option, the system will immediately
start broadcasting service requests. IP will be enabled but will not function
until a BOOTP or DHCP reply has been received. Requests are broadcast
every few minutes using exponential backoff until IP configuration
information is obtained from a BOOTP or DHCP server. BOOTP and DHCP
values can include the IP address, subnet mask, and default gateway. If
the DHCP/BOOTP server is slow to respond, you may need to use the “ip
dhcp restart client” command to re-start broadcasting service requests.
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