BFD on 1.4.2

[Kristoffer Egefelt]

>> Hi,
>> 
>> I?m trying BFD with some Force10 S4810 routers, problem is that sessions only come up every 3 or 4 times I restart bird.
>> Also if Force10 routers are restarted, some times the sessions do not come back up.
>> Also I have to restart bird to get it to work - birdc configure does not do it.
>> 
>> I tried with the sysctl -w net.ipv4.ip_local_port_range="49152 65535? but this does not help either.
>> 
>> I?m not able to get more debug info from the force10 devices than this:
> 
> What you get from 'show bfd sessions' in BIRD?

# birdc show ospf nei
BIRD 1.4.2 ready.
ospf1:
Router ID   	Pri	     State     	DTime	Interface  Router IP   
77.66.22.229	  0	    2way/other	00:20	bond0.3000 77.66.22.229   
77.66.22.227	  0	    2way/other	00:20	bond0.3000 77.66.22.227   
77.66.22.195	  5	    full/bdr  	00:18	bond0.3000 77.66.22.226   
77.66.22.194	 10	    full/dr   	00:19	bond0.3000 77.66.22.225   

Working:

# birdc show bfd ses
BIRD 1.4.2 ready.
bfd1:
IP address                Interface  State      Since       Interval  Timeout
77.66.22.227              bond0.3000 Down       17:16:24      1.000    0.000
77.66.22.225              bond0.3000 Up         17:16:31      0.100    0.300
77.66.22.226              bond0.3000 Up         17:16:30      0.100    0.300
77.66.22.229              bond0.3000 Down       17:16:25      1.000    0.000

Not working:

# birdc show bfd ses
BIRD 1.4.2 ready.
bfd1:
IP address                Interface  State      Since       Interval  Timeout
77.66.22.227              bond0.3000 Down       17:27:00      1.000    0.000
77.66.22.225              bond0.3000 Init       17:27:08      1.000    3.000
77.66.22.229              bond0.3000 Down       17:27:00      1.000    0.000
77.66.22.226              bond0.3000 Init       17:27:06      1.000    3.000


> 
> Could you get some tcpdump of BFD packets in both cases?

Sure, see attached tar, including two dumps, working and notworking.
.225 is the router, .228 is bird. 

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> 
> -- 
> Elen sila lumenn' omentielvo
> 
> Ondrej 'SanTiago' Zajicek (email: santiago at crfreenet.org)
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> "To err is human -- to blame it on a computer is even more so."