Thanks Michael...
You are right..ssms uses port 1433..i used 443 just to avoid using the actual port number...sorry about that. VIP indeed is opened for 1433.
I did a tcpdump when client was accessing VIP on port 1433,and here's what we saw
14:55:25.626243 802.1Q vlan21 P0 10.30.45.11.49448 > 10.210.0.210.1433: S 2503976789:2503976789(0) win 8192 (DF)
14:55:25.626541 802.1Q vlan21 P0 10.30.45.11.49448 > 10.210.0.210.1433: . ack 2045621418 win 256 (DF)
14:55:25.626553 802.1Q vlan21 P0 10.30.45.11.49448 > 10.210.0.211.1433: S 2296223818:2296223818(0) win 4380 (DF)
14:55:25.627153 802.1Q vlan21 P0 10.30.45.11.137 > 10.210.0.210.137: NBT UDP PACKET(137): QUERY; REQUEST; UNICAST
14:55:27.126335 802.1Q vlan21 P0 10.30.45.11.137 > 10.210.0.210.137: NBT UDP PACKET(137): QUERY; REQUEST; UNICAST (DF)
pool member has BigIP as its gwy.