Chapter 9 — Troubleshooting and Support
Network Setup Tips
September 2017
User Guide
—
Spectra Verde Array
151
From
your
network,
use
the
ʺ
ping
ʺ
command
(see
)
to
test
the
assigned
IP
address
for
the
Verde
management
port
or
data
port.
If
this
is
not
successful,
use
the
following
troubleshooting
tips
to
ascertain
if
the
problem
is
a
network
setup
issue.
Troubleshooting
Port Link LED Does Not Light
Check
the
port
configuration
on
the
network
switch.
The
Verde
master
node
only
supports
auto
‐
negotiation.
Make
sure
the
switch
is
configured
to
match
speeds
on
both
ends
of
the
connection.
Check
the
cables
that
connect
the
port
to
the
other
device.
Make
sure
that
they
are
connected.
Verify
that
you
are
using
the
correct
cable
type
and
connectors.
This
is
especially
critical
for
10
GigE
and
40
GigE
connections
utilizing
SFPs.
Verify
that
the
switch
ports
are
not
administratively
disabled.
Consult
the
switch
User
Guide
for
more
information.
Port Link LED is Lit, But I Cannot Ping the Verde Array
Check
the
LACP
settings
on
the
switch.
If
you
are
using
link
aggregation
on
the
Verde
array,
the
switch
MUST
be
configured
to
use
LACP
on
those
ports.
If
you
are
not
using
link
aggregation,
the
switch
must
be
configured
NOT
to
use
LACP
on
those
ports.
Check
the
VLAN
(Virtual
Local
Area
Network)
settings
on
the
switch.
Ensure
that
the
ports
are
assigned
to
the
correct
VLAN.
Tools
Ping
The
ping
command
is
a
simple
tool,
based
on
a
request
‐
response
mechanism,
to
verify
connectivity
to
a
remote
network
node.
The
ping
command
is
based
on
ICMP
(Internet
Control
Message
Protocol).
The
request
is
an
ICMP
Echo
request
packet
and
the
reply
is
an
ICMP
Echo
Reply.
Like
a
regular
IP
packet,
an
ICMP
packet
is
forwarded,
based
on
the
intermediate
routers
ʹ
routing
table,
until
it
reaches
the
destination.
After
it
reaches
the
destination,
the
ICMP
Echo
Reply
packet
is
generated
and
returned
to
the
originating
node.