Patton electronic SmartNode 4110 Series Release or renew a Dhcp lease manually advanced, Mode Any

SmartWare Software Configuration Guide 27 • DHCP configuration

Release or renew a DHCP lease manually (advanced)

After enabling the DHCP-client, the interface receives a DHCP lease from the DHCP-server. To manually release and/or renew this DHCP lease use the command described below.

This procedure describes how to release and renew the DHCP lease

Mode: interface

Step	Command	Purpose
1	node(if-ip)[name]#dhcp-client release	Releases DHCP lease. (See note)
2	node(if-ip)[name]#dhcp-client renew	Gets a new DHCP lease from the DHCP-server

Note If you are connected by Telnet over the IP interface on which you release the DHCP lease, the connection is lost after entering the command dhcp-client release. You need an other way (e.g. a serial connection) to connect to the SmartNode again and to enter the command dhcp-client renew!

Get debug output from DHCP-client

This procedure describes how to enable/disable DHCP-client debug monitor

Mode: Any

Step	Command	Purpose
1	node(if-ip)[name]#[no] debug dhcp-client	Enables/disables the DHCP-client debug monitor

Example: Enable DHCP debug monitor

This example shows how to enable the DHCP-client debug monitor and the debug output of the command dhcp-client release and dhcp-client renew.

node(cfg)#context ip node(ctx-ip)[router]#interface eth0 node(if-ip)[eth0]#debug dhcp-client node(if-ip)[eth0]#dhcp-client release

01:12:28 DHCPC > router/eth0 (Rels): Unicasting DHCP release (xid 490cb56b, secs 1).

01:12:29 DHCPC > router/eth0 (Rels): Shutting down.

01:12:29 DHCPC > router/eth0 (Rels): Tearing down IP interface

2001-01-01T01:12:30	:	LOGINFO	:	Link	down on interface eth0.
2001-01-01T01:12:30	:	LOGINFO	:	Link	up on interface eth0.

node(if-ip)[eth0]#dhcp-client renew

01:17:46 DHCPC > router/eth0 (Init): Tearing down IP interface

01:17:46 DHCPC > router/eth0 (Init): Broadcasting DHCP discover (xid 0f839e56, secs 0).

01:17:46 DHCPC > router/eth0 (Init): Requesting IP address 172.16.224.102

01:17:47 DHCPC > router/eth0 (Slct): Got offer from 172.16.1.10 for IP 172.16.224.102

01:17:47 DHCPC > router/eth0 (Slct): Selected offer for 172.16.224.102

01:17:47 DHCPC > router/eth0 (Slct): Broadcasting DHCP request (select) (xid 6ff42c38, secs 1).

DHCP-client configuration tasks 296