Administrator Guide

Layer 2 Switching Commands 327
mytftpserverpath/N3000_N2000v6.3.0.1.stk
Option 125 also supports sub-option 6, which is the path to a configuration
file on the TFTP server. Only the path name is relevant. Configure the DHCP
server to use vendor id 674 and the required sub-option 6 and a hexadecimal
encoded ASCII path value. If sub-option 6 is specified, the switch attempts to
download the configuration file <hostname>.cfg using the DHCP supplied
host name. If that file is not found on the TFTP server, the switch attempts
to download the "host.cfg" file. The configuration file consists of a series of
CLI commands in ASCII text which are executed by the switch in Privileged
Exec mode.
For example, one might enter the following information:
• A2-02-00-00 — Dell Enterprise number 674. It should be written from
right to left. 674 decimal is 02 a2 00 00
•08 — Data Length (8 decimal)
•06 — Sub option code 6
• 06 — Sub option length (10 decimal)
• Conversion of the file name from ACSII to hexadecimal "mypath" - 6D-79-
70-61-74-68
Commands in this Section
This section explains the following commands:
release dhcp
Use the release dhcp command in Privileged Exec mode to force the
DHCPv4 client to release a leased address.
Syntax
release dhcp interface-id
• interface-id — Any valid VLAN interface. See Interface Naming Conventions for
interface representation.
release dhcp –
renew dhcp show dhcp lease
2CSNXXX_SWUM204.book Page 327 Monday, January 25, 2016 1:25 PM