[Xorp-users] OSPF4 neighbor shown in only one machine not on the other two

Bruce Simpson bms at incunabulum.net
Fri May 1 08:53:53 PDT 2009


Hi,

Your configuration file looks OK, which suggests the problem might be 
with the VLAN driver support in Linux, or how XORP is trying to use it.

It would be helpful to see a packet capture on the affected machines, I 
believe there are no outstanding bugs for the VLAN support and it has 
been tested as working before on generic Linux.

It is possible there's a difference between your SUSE machines and your 
Fedora machines in that behaviour. Can you be sure they are patched to 
the correct switch ports in your network?

You don't mention if the machines successfully synchronized their OSPF 
databases. Please send the output of the 'show ospf4 neighbor' commands 
when reporting problems with OSPF such as this, as we need to know what 
states they're in.

You can use Wireshark (www.wireshark.org) or tcpdump (www.tcpdump.org), 
both should be available in Fedora as yum packages. Be sure to time 
what's happening, and try to preserve all XORP logs from your session.

Please don't send the traces/log files here or to the list -- instead, 
attach them to the bug report which Syed has asked you to open.

bhavin81 at iitb.ac.in wrote:
> Hello Friends,
>
>       I have tried to configure ospf4 in xorp. I have configured
> 3 machines for this purpose. When i use the command show ospf4
> neighbor on one machine(fedora 8) out of three then it shows neighbor
> correclty but when i use the same command on other two machines (suse
> 10.3) then it does not show neighbors on the those machines.

thanks,
BMS



More information about the Xorp-users mailing list