[quagga-users 7143] Re: Ospf 'can't setsockopt IP_ADD_MEMBERSHIP'

Kris Olander kriso at packetdesign.com
Wed Jun 28 12:27:59 IST 2006


You need to bump the following parameter (that's what the  
"perhaps ..." message implies doing)

  /proc/sys/net/ipv4/igmp_max_memberships to 31

and see what happens.  The default is 20.  This inhibits certain  
random interfaces from joining the AllSPFRouters address so no  
adjacencies will form.

-Kris

Kris Olander
kriso at packetdesign.com



On Jun 28, 2006, at 10:32 AM, Jason Sigurdur wrote:

> Hi, I am using Fedora core 5 and quagga-0.98.5-4. My system is  
> using gre
> over ipsec. 30 gre tunnels.
>
> Each System is in a point-to-point configuration. When I start ospfd I
> get the following messages:
>
> un 28 11:23:31 GW16 ospfd[4709]: can't setsockopt IP_ADD_MEMBERSHIP  
> (fd
> 5, addr 1.16.10.2, ifindex 26, AllSPFRouters): No buffer space
> available; perhaps a kernel limit on # of multicast group memberships
> has been exceeded?
> Jun 28 11:23:31 GW16 ospfd[4709]: can't setsockopt  
> IP_ADD_MEMBERSHIP (fd
> 5, addr 1.16.11.1, ifindex 27, AllSPFRouters): No buffer space
> available; perhaps a kernel limit on # of multicast group memberships
> has been exceeded?
>
>
> The connection between routers is very intermittent. Any  
> suggestions on
> how I can fix this would be appreciated.
>
> jason
>
>
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