Re: [Bridge] Error in Bridge Settings!!

["Kirti S. Bajwa" <kbajwa@tibonline.net>]

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Etienne:

 

Your response makes sense. In my case, if I enter the script manually, the
message goes away. That's why your response makes sense. Since the process
works, I am going to leave it to that.

 

Thanks.

 

Kirti

 

-----Original Message-----
From: Etienne Pretorius [mailto:etiennep@kingsley.co.za] 
Sent: Thursday, June 29, 2006 2:35 AM
To: Kirti S. Bajwa; bridge@lists.osdl.org
Subject: Re: [Bridge] Error in Bridge Settings!!

 

Let me first explain that I have the same problem in my Ethernet bridge
setup.

What I have determined, that there is a loop in my network but STP is
preventing a packet broacast storm. I have switches instead of hubs but my
primary bridge is broadcasting packets somehow, because when I unplug the
primary's Ethernet from our internal network then those messages stop
appearing. I am in the process of re-setting up that bridge so that
*hopefully* I wont be seeing this message in future. I wander if it might be
the HUBs you using.... they might be broadcasting any packet to all ports
and so your bridge will receive its own packets back to it? Like I said - I
have the same problem, but the setup still works and I am trying to remove
loops in my network to see if that *really* is the cause to the error
message.



Kind Regards
Etienne


Kirti S. Bajwa wrote: 

Hello Bridge List:

 

Please help a newbie!

 

I have setup two freshly installed CentOS 4.3 servers and have setup
redundant BRIDGE. My plan is to have the 'redundant' BRIDGE working and then
I will add 'Shorewall' Firewall to these two servers. On both machines, I
have included the following lines in '/etc/rc.local' so that the BRIDGE will
be ACTIVE after BOOT:

 

/etc/rc.local

=========

 # Setup BRIDGE (First Bridge)

 brctl   addbr       tibbr1

 brctl   addif        tibbr1  eth0

 brctl   addif        tibbr1  eth1

 ifconfig   tibbr1  up

 ifconfig   tibbr1  12.21.237.2   netmask   255.255.255.0

 brctl   setageing   tibbr1  300

 brctl   stp   tibbr1    on

 brctl   setbridgeprio   tibbr1   100

 brctl   setpathcost  tibbr1  eth0  100

 brctl   setpathcost  tibbr1  eth1  100

 reboot 

 

=========

Similar lines are included in the second server except the bridge name is
'tibbr2', IP addr is 12.21.237.4 & bridge & path costs are 200.

MAC addresses on each server are as follows:

 

Server 1:

eth0: 00:80:ad:16:f3:25

eth1: 00:30:1b:38:c6:41

 

Server 2:

eth0: 00:80:ad:16:e6:43

eth1: 00:30:1b:38:c4:c9

 

PROBLEM:

-------------

When I boot one of the servers, I get the following errors:

 

eth1: received packet with own address as source address

eth0: received packet with own address as source address

 

What are these errors & why they are appearing? 

 

If I no-op (#) the following lines, the error disappear:

 

# ifconfig   tibbr1  up

# ifconfig   tibbr1  12.21.237.2   netmask   255.255.255.0

 

 

FYI, my current hardware setup is as follows:

 

                              T1 Line

                                     |

                      Cisco 26XX Router

                                     |

                                 HUB -------> HUB (Current Network)

                                     |

               ----------------------------

               |                  eth0                |                    

             fw1                                   fw2              

               |                  eth1                |

              -----------------------------

                                     |

                                 HUB

                                     |

             (Future: additional Servers)

 

Please HELP! How can I fix the settings so the above listed PROBLEM is
resolved!!

 

Kirti

 





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