do you have the same error even running ntop without using the config file?
Try to run ntop on interface eth0 just to check that package is working
as expected.

Yuri

Yu Wan wrote, On 09/07/2008 17.00:
> Dear ALL,
> I have problem on ntop v.3.3.6 (Dag Apt RPM Repository) on CentOS 5.0
> 
> I have one PC with 256M memory and 2 NIC, eth0 used for management, and 
> eth1 was spaned from switch for my internet router.
> When I run with "ntop @/etc/ntop.conf", the system complain "**ERROR** 
> pcap_open_live(): 'bind: Network is down'"
> Please check the error message:
> [EMAIL PROTECTED] ~]# ntop @/etc/ntop.conf
>    Processing file /etc/ntop.conf for parameters...
> Thu Jul 10 06:48:44 2008  NOTE: Interface merge enabled by default
> Thu Jul 10 06:48:44 2008  Initializing gdbm databases
> Thu Jul 10 06:48:44 2008  ntop v.3.3.6 (Dag Apt RPM Repository)
> Thu Jul 10 06:48:44 2008  Configured on Jun 12 2008 11:27:52, built on 
> Jun 12 2008 11:30:05.
> Thu Jul 10 06:48:44 2008  Copyright 1998-2007 by Luca Deri 
> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
> Thu Jul 10 06:48:44 2008  Get the freshest ntop from http://www.ntop.org/
> Thu Jul 10 06:48:44 2008  NOTE: ntop is running from 'ntop'
> Thu Jul 10 06:48:44 2008  NOTE: (but see warning on man page for the 
> --instance parameter)
> Thu Jul 10 06:48:44 2008  NOTE: ntop libraries are in '/usr/lib'
> Thu Jul 10 06:48:44 2008  Initializing ntop
> Thu Jul 10 06:48:44 2008  No patterns to load: protocol guessing disabled.
> Thu Jul 10 06:48:45 2008  **ERROR** pcap_open_live(): 'bind: Network is 
> down'
> Thu Jul 10 06:48:45 2008  Please correct the problem or select a 
> different interface using the -i flag
> Thu Jul 10 06:48:45 2008  **FATAL_ERROR** Not root, ntop shutting down...
> Thu Jul 10 06:48:45 2008  CLEANUP[t3086829248]: ntop caught signal 2 
> [state=2]
> Thu Jul 10 06:48:45 2008  ntop is now quitting...
> 
> 
> But I was very sure the link with eth1 was up.Does anyboy who can help 
> me to check it?
> Many thanks!
> 
> Please check OS information:
> [EMAIL PROTECTED] ~]# uname -a
> Linux localhost.localdomain 2.6.18-8.el5 #1 SMP Thu Mar 15 19:57:35 EDT 
> 2007 i686 i686 i386 GNU/Linux
> 
> And the way I installed the ntop
> rpm -Uhv 
> http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
> yum install ntop
> 
> The configuration of ntop:
> --user root
> 
> ### Sets the directory that ntop runs from.
> --db-file-path /var/ntop
> 
> ### Interface(s) that ntop will capture on (default: eth0)
> --interface eth1
> 
> ### Configures ntop not to trust MAC addrs.  This is used when port 
> mirroring or SPAN
> --no-mac
> 
> ### Logging messages to syslog (instead of the console):
> ###  NOTE: To log to a specific facility, use --use-syslog=local3
> ###  NOTE: The = is REQUIRED and no spaces are permitted.
> #--use-syslog
> 
> ### Tells ntop to track only local hosts as specified by the 
> --local-subnets option
> #--track-local-hosts
> 
> ### Sets the port that the HTTP webserver listens on
> ###  NOTE: --http-server 3000 is the default
> #--http-server 3000
> 
> ### Sets the port that the optional HTTPS webserver listens on
> #--https-server 3001
> 
> ### Sets the networks that ntop should consider as local.
> ###  NOTE: Uses dotted decimal and CIDR notation. Example: 
> 192.168.0.0/24 <http://192.168.0.0/24>
> ###        The addresses of the interfaces are always local and don't 
> need to be specified.
> #--local-subnets xx.xx.xx.xx/yy
> ### Sets program to run as a daemon
> ###  NOTE: For more than casual use, you probably want this.
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Ntop mailing list
> [email protected]
> http://listgateway.unipi.it/mailman/listinfo/ntop

-- 
############################################################
  Yuri Francalacci                                      
  E-Mail: [EMAIL PROTECTED]   Internet: http://www.ntop.org/
  *** Esse Quam Videri -- To Be, Rather Than To Seem ***
############################################################

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