Getting Socket write failed for some clients. But Telnet is successful from master to client and vice versa also bpclntcmd commands are successful.
D:\Program Files\Veritas\NetBackup\bin\admincmd>bptestbpcd -client client1 -debug
17:41:59.832 [17332.19096] <2> bptestbpcd: VERBOSE = 0
17:41:59.832 [17332.19096] <2> read_client: dname=., offline=0, online_at=0 offl
ine_at=0
17:41:59.832 [17332.19096] <2> read_client: dname=.., offline=0, online_at=0 off
line_at=0
17:41:59.832 [17332.19096] <2> read_client: dname=CO_0, offline=0, online_at=0 o
ffline_at=0
17:41:59.832 [17332.19096] <2> read_client: dname=host_info, offline=0, online_a
t=0 offline_at=0
17:41:59.832 [17332.19096] <2> read_client: dname=OA_2147483647, offline=0, onli
ne_at=2147483647 offline_at=0
17:41:59.832 [17332.19096] <2> db_freeEXDB_INFO: ?
17:41:59.848 [17332.19096] <2> copy_preferred_network_list: ../../libvlibs/nbcon
f.c.1801: pseudo PN for : server1
17:41:59.848 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.848 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.848 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.848 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.848 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.864 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.879 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.895 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.910 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.926 [17332.19096] <8> async_connect: [vnet_connect.c:1700] getsockopt S
O_ERROR returned 10049 0x2741
17:41:59.926 [17332.19096] <16> connect_to_service: connect failed STATUS (18) CONNECT_FAILED
status: FAILED, (41) ADDR_IN_USE; system: (10049) The requested address
is not valid in its context. ; FROM 10.242.251.115 TO client110.242.19.42 bpcd VIA nbrntd
17:41:59.926 [17332.19096] <8> vnet_connect_to_bpcd: [vnet_connect.c:297] connect_to_service() failed 18 0x12
17:41:59.926 [17332.19096] <2> local_bpcr_connect: Can't connect to client Client1
17:41:59.926 [17332.19096] <2> ConnectToBPCD: bpcd_connect_and_verify(Client1, Client1) failed: 25
<16>bptestbpcd main: Function ConnectToBPCD(client1) failed: 25
17:41:59.926 [17332.19096] <16> bptestbpcd main: Function ConnectToBPCD(Client1) failed: 25
<16>bptestbpcd main: cannot connect on socket
17:41:59.957 [17332.19096] <16> bptestbpcd main: cannot connect on socket
<2>bptestbpcd: cannot connect on socket
17:41:59.957 [17332.19096] <2> bptestbpcd: cannot connect on socket
<2>bptestbpcd: EXIT status = 25
17:41:59.973 [17332.19096] <2> bptestbpcd: EXIT status = 25
cannot connect on socket
D:\Program Files\Veritas\NetBackup\bin\admincmd>