[Xorp-users] OSPF Hello messages not exchanged after some period, and link status becomes dead

Ben Greear greearb at candelatech.com
Tue Mar 23 16:38:15 PDT 2010

On 03/23/2010 03:49 PM, Dejan Petkovic wrote:

> Hi Ben,
> the thing is, when the routers on both nodes are in down mode, the
> suggested commands can not be executed on the nodes. They simply do
> not return any result, i.e. I have to break the command. However,
> after I kill xorp rtrmgr script on both nodes, I get the below output
> from the suggested commands. The XORP version I use is 1.6.

You mean that the linux command line hangs while xorp is in the broken

If so, it's probably a kernel bug of some sort (something probably holds
the netdev list lock or similar).

Please show me the strace output from one of the blocking commands:
strace ip route show

What Linux kernel version are you using?

If you run strace or gdb against the xorp-fea process, can you see
if it's hung in any particular system call?

Can you use a newer version of OpenVZ, or maybe try to replicate
using something other than openVZ?

Also, 1.6 is not under active development...please try xorp.ct:


Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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