Chapter 9 — Troubleshooting and Support
Network Setup Tips
September 2017
User Guide
—
Spectra Verde Array
150
For
example,
if
only
a
single
host
is
connected
to
the
Verde
array
through
a
link
aggregated
connection,
the
measured
performance
is
lower
than
the
potential
maximum
transfer
rate
because
only
one
physical
port
of
the
three
port
link
aggregation
is
being
utilized
by
the
switch.
If
a
single
share
is
mounted
three
times
using
different
IP
addresses
and
transfers
are
started
to
that
share
from
three
separate
hosts,
the
resulting
throughput
would
be
approximately
three
times
that
of
a
single
host
connection.
You
may
need
to
configure
more
than
three
IP
addresses
on
the
Verde
array
to
force
the
switch
hashing
algorithm
to
utilize
all
physical
ports
and
maximize
performance.
Additionally,
if
link
aggregation
is
configured
for
the
Verde
master
node,
then
switches
must
also
be
able
to
support
link
aggregation
to
aggregate
or
ʺ
trunk
ʺ
the
data
ports
together
to
provide
higher
bandwidth
into
the
Verde
array.
Switches
must
support
link
aggregation
using
LACP
(Link
Aggregation
Control
Protocol),
and
the
switches
must
hash
the
destination
IP
addresses.
Manually
configure
LACP
on
the
switch
ports.
LACP
does
not
get
enabled
automatically.
Once
configured
correctly
and
attached
to
the
network,
the
status
in
the
user
interface
indicates
the
speed
of
the
connection
and
whether
the
port
is
active.
The
link
lights
on
the
network
ports
should
be
on
and
active
at
both
the
Verde
master
node
and
the
network
switch.
Figure 117
Connection example utilizing two IP addresses assigned to a single
share.
Client mounts
Client
Switch
Verde array
IP address 1 Share X
IP address 2 Share X
LACP
Destination IP address hashing
Single MAC address
2 static IP addresses assigned
Up to 16 static IP addresses
Link aggregation - two 10 GigE ports
IP address 1
IP address 2