WLC 7.4.100.0 Mobility group control and data path down

Hi All,
Today i am facing issue with mobility group. i checked and found  control and data path is down on foreign controller.I am able to ping anchor controller. Required ports are open on firewall but mping and eping fails. Any idea whats wrong. On Anchor controller, i have 7 foreign controller configured and among these 3 are working fine. Having problem with 4 foreign controller. Previously all are working fine and there is no changes made on network or firewall.            

Post output of "show mobility summary" of your Anchor WLC & a non-working WLC. Also "show sysinfo" of those two controllers.
Regards
Rasika

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