Administration: File Management
DHCP Auto Configuration
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 54
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DHCP Auto Configuration
Auto Configuration enables passing configuration information to hosts on a TCP/IP
network. Based on this protocol, the Auto Configuration feature enables the switch
to download configuration files from a TFTP server.
By default, the switch is enabled as a DHCP client when the Auto Configuration
feature is enabled. The switch can be configured as a DHCPv4 client in which auto
configuration from a DHCPv4 server is supported and/or a DHCPv6 client in which
auto configuration from a DHCPv6 server is supported.
DHCPv4 Auto Configuration is triggered in the following cases:
• After rebooting the switch when an IP address is allocated or renewed
dynamically (using DHCPv4).
• Upon an explicit DHCPv4 renewal request and if the switch and the server
are configured to do so.
• Upon automatic renewal of the DHCPv4 lease.
DHCPv6 Auto Configuration is triggered when the following conditions are fulfilled:
• When a DHCPv6 server sends information to the switch. This occurs in the
following cases:
- When IPv6 stateless client is enabled.
- When DHCPv6 messages are received from the server.
- When DHCPv6 information is refreshed by the switch.
- After rebooting the switch when stateless DHCPv6 client is enabled.
• When the DHCPv6 server packets contain the configuration filename
option.
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