4-8
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Chapter 4 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 4-3
shows a sample network for retrieving IP information by using DHCP-based autoconfiguration.
Figure 4-3
DHCP-Based Autoconfiguration Network Example
Table 4-2
shows the configuration of the reserved leases on the DHCP server.
Switch 1
00e0.9f1e.2001
Cisco router
49066
Switch 2
00e0.9f1e.2002
Switch 3
00e0.9f1e.2003
DHCP server
DNS server
TFTP server
(maritsu)
10.0.0.1
10.0.0.10
10.0.0.2
10.0.0.3
Switch 4
00e0.9f1e.2004
Table 4-2
DHCP Server Configuration
Switch-1
Switch-2
Switch-3
Switch-4
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
maritsu or 10.0.0.3
maritsu or 10.0.0.3
maritsu or 10.0.0.3
maritsu or 10.0.0.3
Boot filename
(configuration file)
(optional)
switch1-confg
switch2-confg
switch3-confg
switch4-confg
Host name (optional)
switch1
switch2
switch3
switch4
