Obtaining Configuration Files - Cisco WS-C2950-24 Configuration Manual

Changing IP Information

Obtaining Configuration Files

Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
6-10
Figure 6-2 Relay Device Used in Autoconfiguration
Switch
(DHCP client)
10.0.0.1
20.0.0.2
DHCP server TFTP server
For CLI procedures, refer to the Cisco IOS Release 12.0 documentation on
Cisco.com for additional information and CLI procedures.
Depending on the availability of the IP address and the configuration filename in
the DHCP reserved lease, the switch obtains its configuration information in the
following ways:
The IP address and the configuration filename is reserved for the switch and
•
provided in the DHCP reply (one-file read method).
The switch receives its IP address, subnet mask, and configuration filename
from the DHCP server. It also receives a DNS server IP address and a TFTP
server name. The switch sends a DNS request to the DNS server, specifying
the TFTP server name, to obtain the TFTP server address. Then the switch
sends a unicast message to the TFTP server to retrieve the named
configuration file from the base directory of the server, and upon receipt,
completes its boot-up process.
• Only the configuration filename is reserved for the switch. The IP address is
dynamically allocated to the switch by the DHCP server (one-file read
method).
The switch follows the same configuration process described above.
Cisco router
(Relay)
10.0.0.2
20.0.0.1
20.0.0.3 20.0.0.4
DNS server
Chapter 6 Configuring the System
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