All right. I solved this problem after hours of googling.
It is caused by the limit of enteries in IPv6 kernel routing table,
which is defined in /proc/sys/net/ipv6/route/max_size and is 4096 by
default. But we have more than 4096 IPv6 routes, so it crashed when
adding 4097th entry into kernel table. But it also took down OSPF
communication.
Maybe bird should check this limit and tell more interesting error
message? Thanks.
Petr
Dne 10.12.2010 14:47, Petr Šťastný napsal(a):
Hello,
I have bird6 (1.2.5) running OSPF and BGP. Everything works perfectly
until I enable BGP protocol:
bird> enable XXX
10-12-2010 14:37:52 <INFO> Enabling protocol XXX
10-12-2010 14:37:54 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:37:54 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:37:54 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:37:54 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:37:54 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:37:54 <WARN> ...
10-12-2010 14:38:02 <ERR> OSPF: Socket error: Network is unreachable
10-12-2010 14:38:12 <ERR> OSPF: Socket error: Network is unreachable
10-12-2010 14:38:12 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:12 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:12 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:12 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:12 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:12 <WARN> ...
10-12-2010 14:38:22 <ERR> OSPF: Socket error: Network is unreachable
10-12-2010 14:38:25 <WARN> Netlink: No such process
10-12-2010 14:38:25 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:25 <WARN> Netlink: No such process
10-12-2010 14:38:25 <WARN> Netlink: Cannot allocate memory
10-12-2010 14:38:25 <WARN> Netlink: No such process
It is interesting that I also have another router with bird6 running
OSPF (the same network) and BGP peer without any problem.
The router has 5 GB of free memory.
bird> show memory
BIRD memory usage
Routing tables: 46 kB
Route attributes: 4952 B
Protocols: 72 kB
Total: 151 kB
Any idea?
Thanks
Petr Stastny
