Default Switch Information; Dhcp-Based Autoconfiguration Overview - Cisco Catalyst 9200 Configuration Manual

Default Switch Information

Default Switch Information
Table 4: Default Switch Information
Feature
IP address and subnet mask
Default gateway
Enable secret password
Hostname
Telnet password
Cluster command switch functionality
Cluster name

DHCP-Based Autoconfiguration Overview

DHCP provides configuration information to Internet hosts and internetworking devices. This protocol consists
of two components: one for delivering configuration parameters from a DHCP server to a device and an
operation for allocating network addresses to devices. DHCP is built on a client-server model, in which
designated DHCP servers allocate network addresses and deliver configuration parameters to dynamically
configured devices. The device can act as both a DHCP client and a DHCP server.
During DHCP-based autoconfiguration, your device (DHCP client) is automatically configured at startup
with IP address information and a configuration file.
With DHCP-based autoconfiguration, no DHCP client-side configuration is needed on your device. However,
you need to configure the DHCP server for various lease options associated with IP addresses.
If you want to use DHCP to relay the configuration file location on the network, you might also need to
configure a Trivial File Transfer Protocol (TFTP) server and a Domain Name System (DNS) server.
Note We recommend a redundant connection between a switch stack and the DHCP, DNS, and TFTP servers. This
is to help ensure that these servers remain accessible in case one of the connected stack members is removed
from the switch stack.
The DHCP server for your device can be on the same LAN or on a different LAN than the device. If the
DHCP server is running on a different LAN, you should configure a DHCP relay device between your device
and the DHCP server. A relay device forwards broadcast traffic between two directly connected LANs. A
router does not forward broadcast packets, but it forwards packets based on the destination IP address in the
received packet.
DHCP-based autoconfiguration replaces the BOOTP client functionality on your device.
System Management Configuration Guide, Cisco IOS XE Gibraltar 16.10.x (Catalyst 9200 Switches)
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Default Setting
No IP address or subnet mask are defined.
No default gateway is defined.
No password is defined.
The factory-assigned default hostname is Device.
No password is defined.
Disabled.
No cluster name is defined.
Performing Device Setup Configuration