D-Link DFL-M510 Faq page 4

System
Q: Why does the device memory usage exceed 80% right after
start-up?
A:
To achieve robustness and efficiency, we do not allocate memory dynamically
(runtime) in M510. Instead, we pre-allocate almost all necessary memory space for
tables and data objects during booting up and then do the memory management by our
own program, not the Operating System. Although the memory usage looks high right
after the booting, it tends to keep stable (from 80% to 89%) without too much peaks.
Q: Why does D-Link strongly suggest not managing DFL-M510
from the Internet?
A:
Since the communication between M-510 device and Java GUl could be quite
bandwidth-consumptive (especially in signature download or firmware upgrade), the
GUI communication possibly affects the upstream bandwidth and introduce more latency
to outbound traffic. Moreover, the administrator may not have smooth RTM transaction
by the way if the upstream bandwidth is quite limited.
Q: Do the"Standby Hosts" disappear from the host table after
rebooting?
A:
"Standby Hosts" will disappear only if device is reset to factory default status or the
user manually removes them from UI. On the other hand, "Stand by Hosts" is stored in
non-volatile memory so that rebooting the device does not clear it either. One
noticeable technical issue is the M510 store the "Standby Hosts" temporarily in a one-
way hash table, and a host record could be overwritten by another if hash collision
happens.
D-Link Nordic Technical Support 4