Configuring the Switch
Configuring the Switch
IP Configuration
| DHCP/Bootp Operation |
| Overview |
| The DHCP/Bootp switch configuration option is used to download configura- |
| tion data from a DHCP or Bootp server to the switch. With DHCP you can have |
| the switch automatically retrieve the IP address with no configuration |
| required on either the switch or the DHCP server. A Bootp server requires |
| some configuration, but you can additionally identify a file to be downloaded |
| to the switch containing a full switch configuration. |
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N o t e | The Switch 212M and Switch 224M are compatible with both DHCP and Bootp |
| servers. |
| Once the switch acquires an IP configuration from either a DHCP or Bootp |
| server, it displays the IP address, subnet mask, and gateway information in |
| the IP Configuration screen. |
| The DHCP/Bootp Process |
| |
| Whenever the IP Config parameter in the switch is configured to DHCP/Bootp |
| (the default), or when the switch is rebooted with this configuration: |
| 1. DHCP/Bootp requests are automatically broadcast on all local networks. |
| (The switch sends one type of request that either a DHCP or Bootp server |
| can process.) |
| 2. When a DHCP or Bootp server receives the request, it replies with an |
| automatically generated IP address and subnet mask for the switch. The |
| switch also receives an IP Gateway address if the server has been config- |
| ured to provide one. In the Bootp case, the server must first be configured |
| with an entry that has the MAC address of the switch. |
| The switch properly handles replies from either type of server. If multiple |
| replies are returned, the switch tries to use the first DHCP reply. |
| If the switch does not receive a reply to its DHCP/Bootp requests, it continues |
| to periodically send request packets, but with decreasing frequency. Thus, if |
| a DHCP or Bootp server is not available or accessible to the switch when |
| DHCP/Bootp is first configured, the switch may not immediately receive the |
| desired configuration. After verifying that the server has become accessible |
| to the switch, reboot the switch to |