Problem DHCP on L3 Switch

[join_sn09]

Dear Expert and All,

I would like to ask you some quetion on DHCP, i had switch 6509 and all the client provide DHCP

by this switch and never release . I currently 100 user. and i setp DHCP start from 10 to 250. Last time

all the client used from 10-100.So on client ip 20,21,22,23 is doesn't work (i mean now not use this

ip address but it remmaber on switch)so when i take the new computer to plug on the switch it start for 101.

My question: Which command that release ip 20,21,22,23 and the new client renew ip 20,21,22,23?( I mean don't

want the new client catch ip start from 101 because ip 20,21,22,23 is free)

Could you advice Please?

Best Regards,

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[hadbou]

"set interface sc0 dhcp release" is the command used to release the ip address assigned by DHCP

"set interface sc0 192.20.11.44/255.255.255.0" is the command used to assign a new no dhcp ip address.

"set interface sc0 dhcp renew" is the command to renew the DHCP assigned ip address.

For more information on this command refer:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/catos/8.x/command/reference/set_f_l.html#wp1025833

[join_sn09]

Dear Hadbou,

thanks you for your advice.

The command that you gave me for OS but my switch is IOS.

Could you give me some command for IOS?

and i would like to know which command that we can release one or two IP not all.:)

Best Regards,

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