| The pcomLedProgram string is a sequence of instructions for
the LED state. The LED constantly repeats the program.
Each LED state is represented by a two octet sequence where
the value of the first octet of the pair indicates the color
of the LED, and the value of the seconds octet of the pair
indicates the duration in which that color will be present.
+----------+----------+ --/ /-- +----------+----------+
| Color | Duration | | Color | Duration |
+----------+----------+ --/ /-- +----------+----------+
The 'color' octet may have one of the following values:
0 - off
1 - other
2 - red
3 - yellow
4 - green
5 - blue
6 - red-blinking
7 - yellow-blinking
8 - blue-blinking
9 - green-blinking
The value 'off' indicates that the led is off.
The value 'other' indicates a color not covered by any others
in the list.
The value of the second octet in each pair indicates the
duration in which that color will be present. A value
of zero indicates that the LED is off. A value of 0xff
indicates that the LED is always on. Values in between
0 and 0xff indicate the duration in 10 ms ticks.
A zero length string may be returned if the LED is
'not present'. This indicates that the LED is
currently not visible. (This is provided for modules
which may attach to different chassis, i.e. an 8-slot chassis
or a single-slot chassis, in which a different LEDs may be
visible. For example, say an extra three LEDs are visible
when the device is inserted in a single-slot chassis. When
the device is removed from the single slot chassis and
inserted into the 8-slot chassis, these three LEDs may not
be visible. Therefore, a zero length string may be returned
to indicate that these three LEDs are not present.)
Activity LEDs are a special case. Activity LEDs are defined
as LEDs which blink whenever data is received on the line.
They are typically on solid under heavy activity. Since these
LEDs can change rapidly, the following rules apply:
o The initial state of activity LEDs is off.
o If the line shows activity any time in a 10 second
period, then the LED is shown as on.
o If the line shown inactivity any time in a 10 second
period, then the LED is shown as off.
Example: Consider a 4-bank, 12-port repeater:
Bank: Ports:
---- -----
Bank A: A1, A2, A3
Bank B: B1, B2, B3
Bank C: C1, C2, C3
Bank D: D1, D2, D3
Which has the following LEDs:
LED: pcomLedDescr: pcomLedIndex:
--- ------------ ------------
PWR Hub Power On 1
DIAG Diagnostics 2
A Bank Indicator A 3
B Bank Indicator B 4
C Bank Indicator C 5
D Bank Indicator D 6
P1: Port Status 1A/B/C/D 7
P2: Port Status 2A/B/C/D 8
P3: Port Status 3A/B/C/D 9
Assume the ports of this repeater are in the following states:
Port: State:
---- -----
1A Operational, auto-partitioned, media available
2A Not operational
3A Operational, not auto-partitioned, media available
1B Operational, not auto-partitioned, media available
2B Not operational
3B Not operational
1C Operational, not auto-partitioned, media available
2C Operational, auto-partitioned, media available
3C Not operational
1D Operational, auto-partitioned, media available
2D Not operational
3D Operational, auto-partitioned, media available
Here are the contents of the pcomLedTable for this example:
ledIndex: ledDescr: ledProgram:
-------- -------- ----------
1 Hub Power On 0x04, 0xFF
2 Diagnostics 0x04, 0x32, 0x00, 0x32
3 Bank Indicator A 0x04, 0xC8, 0x00, 0xC8, 0x00,
0xC8, 0x00, 0xC8
4 Bank Indicator B 0x00, 0xC8, 0x04, 0xC8, 0x00,
0xC8, 0x00, 0xC8
5 Bank Indicator C 0x00, 0xC8, 0x00, 0xC8, 0x04,
0xC8, 0x00, 0xC8
6 Bank Indicator D 0x00, 0xC8, 0x00, 0xC8, 0x00,
0xC8, 0x04, 0xC8
7 Port 1A/B/C/D 0x00, 0xC8, 0x04, 0xC8, 0x04,
0xC8, 0x00, 0xC8
8 Port 2A/B/C/D 0x08, 0xC8, 0x08, 0xC8, 0x00,
0xC8, 0x08, 0xC8
9 Port 3A/B/C/D 0x04, 0xC8, 0x08, 0xC8, 0x08,
0xC8, 0x00, 0xC8
This example shows:
o LED 1 is green, and always on
o LED 2 is blinking at a frequency of 1 Hz (1/2 sec green,
1/2 sec. off)
LED's 3-6 indicate for which bank (a-D) of ports status is
currently being displayed on LED's 7-9.
o LED 3 is on for 2 seconds, then off for 6 seconds
o LED 4 is off for 2 seconds, on for 2 seconds, off for 4 seconds
o LED 5 is off for 4 seconds, on for 2 seconds, off for 2 seconds
o LED 6 is off for 6 seconds, then on for 2 seconds
o LED 7 is the status LED for Ports 1A, 1B, 1C and 1D. In
this example, it is: off for 2 seconds (indicating port 1A is
operational but auto-partitioned), solid green for 4 seconds
(indicating ports 1B and 1C are operational, not
auto-partitioned with media available), and off for 2 seconds
(indicating Port 1D is operational but auto-partitioned)
o LED 8 is the status LED for Ports 2A, 2B, 2C and 2D. In
this example, it is: Blinking green for 4 seconds (indicating
ports 2A and 2B are not operational), off for 2 seconds
(indicating port 2C is operational but auto-partitioned), and
blinking green for 2 seconds (indicating port 2D is not
operational).
o LED 9 is the status LED for Ports 3A, 3B, 3C and 3D. In this
example, it is: Solid green for 2 seconds (indicating port 3A
is operational, not auto-partitioned with media available),
Blinking Green for 4 seconds (indicating ports 3B and 3C are
not operational), and off for 2 seconds (indicating port 3D
is operational but auto-partitioned ). |
