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how to stop tftp broadcast

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soonerfisher

Technical User
Jun 9, 2005
3
US
We are having an issue on a Cisco 1720 router that was installed several years ago. The router is functioning great as far as I can tell except for their has been a new firewall installed that is reporting that the router is doing a tftp broadcast that is causing a problem for them. I googled “tftp broadcast” and was able to find the following in this document -
If the TFTP request fails, or if newrouter still has not obtained the IP addresses of all its interfaces, and those addresses are not contained in the host configuration file, then newrouter enters setup mode automatically. Setup mode prompts you for manual configuration of the Cisco IOS software at the console. The new router continues to issue broadcasts to attempt to learn its host name and obtain any unresolved interface addresses. The broadcast frequency will dwindle to every 10 minutes after several attempts. Refer to the "Using Setup for Configuration Changes" section later in this chapter for details on the setup command.


To me this is what appears to be happening. Can you tell me how to make it stop?
 
Can you show us a "sh run" from your router?
 
anahuac#show run
Building configuration...

Current configuration:
!
version 12.0
service config
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname anahuac
!
enable secret 5 $1$l8gK$WujexQKU5VAD2pDwQUgFX.
enable password cisco
!
memory-size iomem 25
ip subnet-zero
no ip domain-lookup
!
no ip bootp server
!
!
!
interface Serial0
ip address 192.168.1.1 255.255.255.0
no ip directed-broadcast
no fair-queue
no cdp enable
!
interface FastEthernet0
ip address 137.100.25.25 255.255.0.0
no ip directed-broadcast
no cdp enable
!
router igrp 1
network 137.100.0.0
network 192.168.1.0
!
ip classless
no ip http server
!
no cdp run
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
password cisco
login
!
end
 
I believe if you do a "no service config" this will stop that from happening .
 
Yes, and for future reference, when you give out your configuration, be sure to remove any reference to your passwords. ;-)
 
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