2
Management
32
These
MIB
file
should
be
transferred
to
the
hard
disk
of
the
workstation
that
will
run
the
SNMP
client
so
they
can
be
imported
by
the
client
software.
When
the
SNMP
client
runs,
the
MIB
files
are
read
and
tell
the
client
which
values
can
be
queried
on
an
SEG
device.
Each
entry
in
the
MIB
includes
a
textual
explanation
of
what
the
value
is.
A
complete
list
is
not
reproduced
in
this
guide.
A
typical
MIB
file
entry
for
the
total
number
of
packets
transmitted
by
an
interface
is
shown
below:
clvIfPktsTotCnt
OBJECT
‐
TYPE
SYNTAX
Counter32
MAX
‐
ACCESS
read
‐
only
STATUS
current
DESCRIPTION
"Total
number
of
packets
transmited
by
the
interface"
::=
{
clvIfStatsEntry
10
}
All
SEG
statistical
values
that
can
be
accessed
by
SNMP
are
listed
in
the
SEG
‐
100
Statistics
Reference,
which
provides
all
available
information
for
each.
This
includes
the
description
of
the
values
along
with
the
MIB
IOD
,
MIB
name
and
MIB
type
.
All
retrievable
statistics
are
part
of
a
hierarchy.
Identifying
a
particular
statistic
involves
constructing
a
path,
which
is
also
described
in
the
Statistics
Reference
.
Defining SNMP access
SNMP
access
is
defined
through
the
definition
of
an
SEG
Remote
object
with
a
Mode
value
of
SNMP
.
The
Remote
object
requires
the
entry
of:
•
Source
interface
–
The
SEG
interface
on
which
SNMP
requests
will
arrive.
•
Source
network
–
The
IP
address
or
network
from
which
SNMP
requests
will
come.
•
Destination
interface
–
The
SEG
interface
to
which
SNMP
requests
are
sent.
By
default,
this
is
core
.
•
Destination
network
–
The
IP
address
or
network
from
which
SNMP
requests
are
sent.
By
default,
this
is
all
‐
nets
.
•
Community
–
The
community
string
which
provides
password
security
for
the
accesses.
Defining community strings
Security
for
SNMP
Versions
1
and
2c
is
handled
by
the
Community
String,
which
is
the
same
as
a
password
for
SNMP
access.
The
Community
String
should
be
difficult
to
guess
and
should
therefore
be
constructed
in
the
same
way
as
any
other
password,
using
combinations
of
upper
and
lower
case
letters
along
with
digits.
IP rules are not required
SNMP
access
does
not
require
any
IP
rules
to
be
defined
to
allow
SNMP
related
traffic
to
flow.
Such
traffic
is
automatically
allowed
by
the
SEG.
