File System RAS events undeliverable to Coordinator

standbye controller unreachable in xsan admin:

0429 18:00:33] 0xb0617000 (debug) nss_port_acquire_thread [-1335791616] exit

[0429 18:00:33] 0xb0185000 NOTICE PortMapper: fsmpm configuration reload complete

[0429 18:00:33] 0xa0742720 (debug) Dropping 192.168.168.100 coordinator 0 for new 49152

[0429 18:00:33] 0xb0513000 NOTICE Portmapper: File System RAS events undeliverable to Coordinator '192.168.168.100'. Please upgrade Xsan on this host.

[0429 18:00:33] 0xa0742720 (debug) NSS: Coordinator 192.168.168.100 flags changed from 0x2 to 0x7

[0429 18:00:33] 0xa0742720 (debug) NSS: Coordinator 192.168.168.100 id is 192.168.168.100

[0429 18:00:33] 0xa0742720 (debug) NSS: Computing nss_coord_sum

[0429 18:00:38] 0xb0207000 (debug) nss_port_acquire_thread [-1340051456] exit

[0429 18:03:15] 0xa0742720 NOTICE PortMapper: launching configuration reload thread

[0429 18:03:15] 0xb0185000 NOTICE PortMapper: fsmpm configuration reload initiated (flags FFFFFFFF)

[0429 18:03:15] 0xb0185000 INFO NSS: Primary Name Server is '192.168.168.100' (192.168.168.100)

[0429 18:03:15] 0xb0207000 INFO NSS: Name Server '192.168.168.100' (192.168.168.100) port is 49152, revision is 0x0102.

[0429 18:03:15] 0xb0185000 INFO NSS: Secondary #1 Name Server is '192.168.168.101' (192.168.168.101)

[0429 18:03:15] 0xb0595000 (debug) nss_port_acquire_thread [-1336324096] exit