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How to increase OSPF adjacency membership on SecurePlatform Pro
Symptoms
  • On SecurePlatform Pro, adding more than twenty OSPF adjacency members will fail.
  • Errors similar to the following will appear in /var/log/messages:

    gated[8200]: task_set_option: task MRouting socket 19 option GroupAdd(10) interface 192.168.0.1(eth5.254) group 224.0.0.2: No buffer space available
Cause
OSPF adjacency membership is soft limited by the Linux kernel parameter:
/proc/sys/net/ipv4/igmp_max_memberships

On SecurePlatform Pro this parameter is set, by default, to "20".
Solution

Proceed as follows:

  1. Connect to command line on Secureplatform Pro.

  2. Log in to Expert Mode.

  3. Run:
    [Expert@hostName]# echo 50 > /proc/sys/net/ipv4/igmp_max_memberships


In the example above, igmp_max_memberships has now been set to "50".

Note: To survive a reboot after change, set the parameter at the beginning of the CP products startup script: /etc/rc.d/init.d/cpboot

See sk33542 (Configuring security gateway parameters on SecurePlatform to survive a reboot)

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