Cisco Systems 3560X Manual De Usuario
3-10
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 3 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.
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
shows a sample network for retrieving IP information by using DHCP-based autoconfiguration.
Figure 3-3
DHCP-Based Autoconfiguration Network Example
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 3-2
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)
(optional)
switcha-confg
switchb-confg
switchc-confg
switchd-confg
Hostname (optional)
switcha
switchb
switchc
switchd