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BOOTP-DHCP, Request becoming from cisco switch - how can stop

jmpatagonia
Level 1
Level 1


Hello I have a Cisco sf350 switch, we create a new vlan and detect on Linux Server on that vlan that we have a lot of BOOTP/DHCP message become from the switch.

07:29:12.423400 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 2c:57:41:73:91:21, length: 296
--> 2c:57:41:73:91:21 Cisco switch maccadress

How can I stop this ?

We look inside the switch and not have a dhcp request configured, have a static ip.

6 Replies 6

ip dhcp bootp ignore <<- try this command

The messages are detect on the linux server not on switch.

This command ip dhcp bootp ignore take effect on the switch ?

regards

 

Yes it config in SW

Hello MHM Cisco World, the command send to me not work, have error on my switch, 

Switch9-VLan137(config)#ip dhcp bootp ignore
% Unrecognized command

We dont have an setting for dhcp, on the switch, is default fabric configured respect to dhcp.

 

 

 
 

jmpatagonia
Level 1
Level 1

it is not possible to set , erro.

Switch11-VLan137(config)#ip dhcp
% Incomplete command
Switch11-VLan137(config)#ip dhcp
excluded-address Exclude range of addresses for allocation
information Dhcp information
pool Configure pool of addresses.
relay Configure DHCP relay
server Enable DHCP server
snooping Dhcp Snooping set enable status
tftp-server IP DHCP client tftp server configuration

jmpatagonia
Level 1
Level 1

The command ip dhcp bootp ignore not work on this switch, and the dhcp service is not activated on this switch

Switch11-VLan137#do sh ver
Active-image: flash://system/images/image1.bin
Version: 2.5.0.83
MD5 Digest: 07968d912499cff5e8b07fdc24779854
Date: 18-Jun-2019
Time: 16:49:35
Inactive-image: flash://system/images/_image1.bin
Version: 2.5.0.83
MD5 Digest: 07968d912499cff5e8b07fdc24779854
Date: 18-Jun-2019
Time: 16:49:35

 

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