Configuration Guide User guide

1028 FastIron Configuration Guide
53-1002494-02
Configuring IP parameters – Layer 3 Switches
DHCP Client-Based Auto-Configuration and Flash
image update
NOTE
The DHCP Client-Based Auto-Configuration and Flash image update are platform independent and
have no differences in behavior or configuration across all platforms (FESX, FSX, FWS, and FCX).
DHCP Client-Based Auto-Configuration allows Layer 2 and Layer 3 devices to automatically obtain
leased IP addresses through a DHCP server, negotiate address lease renewal, and obtain flash
image and configuration files.
DHCP Client-Based Auto-Configuration occurs as follows.
1. The IP address validation and lease negotiation enables the DHCP client (a Brocade Layer 2 or
Layer 3 device) to automatically obtain and configure an IP address, as follows:
• One lease is granted for each Layer 2 device. if the device is configured with a static IP
address, the DHCP Auto-Configuration feature is automatically disabled.
• For a Layer 3 device, one leased address is granted (per device) to the interface that first
receives a response from the DHCP server.
TABLE 177 CLI display of show ip dhcp-server summary command
Field Description
Total number of active leases Indicates the number of leases that are currently active
Total number of deployed address-pools The number of address pools currently in use.
Total number of undeployed address-pools The number of address-pools being held in reserve.
Server uptime The amount of time that the server has been active.
TABLE 178 DHCP Server commands
Command Description
option
bootstrapfilename
Sets the name of the bootstrap file. The no form of this command removes the
name of the bootstrap file.
default-lease-time Specifies the duration of the lease for an IP address that is assigned from a
DHCP server to a DHCP client.
database tftp Defines the TFTP IP address server for storing the DHCP database, the name of
the stored file and the time period at which the stored database is synchronized
with the database on the device.
database ftp Defines the FTP IP address server for storing the DHCP database, the name of
the stored file and the time period at which the stored database is synchronized
with the database on the device.
max-lease-time Specifies the maximal duration of the leases in seconds.
option
bootfile-name
Specifies the pathname of the boot file.
option tftp-server Specifies the IP address of a TFTP server.