Cisco Catalyst 3560-X Series, Software Configuration Manual

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1-10
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Assigning the Switch IP Address and Default Gateway
Assigning Switch Information
Note The switch broadcasts TFTP server requests if the TFTP server is not obtained from the DHCP replies,
if all attempts to read the configuration file through unicast transmissions fail, or if the TFTP server
name cannot be resolved to an IP address.
Example Configuration
Figure 1-3 shows a sample network for retrieving IP information by using DHCP-based
autoconfiguration.
Figure 1-3 DHCP-Based Autoconfiguration Network Example
Table 1-2 shows the configuration of the reserved leases on the DHCP server.
DNS Server Configuration
The DNS server maps the TFTP server name tftpserver to IP address 10.0.0.3.
Switch 1
00e0.9f1e.2001
Cisco router
111394
Switch 2
00e0.9f1e.2002
Switch 3
00e0.9f1e.2003
DHCP server DNS server TFTP server
(tftpserver)
10.0.0.1
10.0.0.10
10.0.0.2 10.0.0.3
Switch 4
00e0.9f1e.2004
Table 1-2 DHCP Server Configuration
Switch A Switch B Switch C Switch D
Binding key (hardware address) 00e0.9f1e.2001 00e0.9f1e.2002 00e0.9f1e.2003 00e0.9f1e.2004
IP address 10.0.0.21 10.0.0.22 10.0.0.23 10.0.0.24
Subnet mask 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0
Router address 10.0.0.10 10.0.0.10 10.0.0.10 10.0.0.10
DNS server address 10.0.0.2 10.0.0.2 10.0.0.2 10.0.0.2
TFTP server name tftpserver or
10.0.0.3
tftpserver or
10.0.0.3
tftpserver or
10.0.0.3
tftpserver or
10.0.0.3
Boot filename (configuration file)
(optional) switcha-confg switchb-confg switchc-confg switchd-confg
Hostname (optional) switcha switchb switchc switchd