Quadrics QsNetII Interconnect

and the switch cards in the interconnect. A link can be node-to-interconnect, or
interconnect-to-interconnect for federated configurations.
The link LEDs are located on QM500 PCI cards in nodes, and on the switch cards
in the interconnect. Each card has a group of three red, amber, and green LEDs.
Each LED has the following meaning when illuminated:
• Red – An error has been detected since the registers were last cleared.
• Amber (flashing) – Data traffic flowing on the link.
• Green – The link is connected.
Where two functional components are powered on and connected by a functional
link cable, the green LEDs are illuminated. An illuminated red LED indicates
that a component or the link cable might be faulty. The fault might only be an
installation problem, such as a card that is not correctly seated in the slot or a cable
that is not securely seated in a port.
During a normal (error free) initialization and run sequence you will see two
different patterns of LED illumination as follows:
• LED illumination during node boot is described in Section 10.2.1.1.
• LED illumination during interconnect power up is described in Section 10.2.1.2.
10.2.1.1 Power on and Boot a Node
The red, amber, and green LEDs on the link components provide the following
diagnostic information as you power on and boot each node.
Event
Node LED Display (QM500 array) Switch Card LED Display
Node connected No LEDs illuminated Red illuminated
Node on Green illuminated Green and red illuminated
Node boot Green illuminated. Amber
flashes briefly.
Green and red illuminated
Node at login Green illuminated Green illuminated
System run Green illuminated. Amber
illuminated intermittently or
continuously (data traffic).
Green illuminated
10.2.1.2 Power on the Interconnects
The red, amber, and green LED arrays on the interconnect port provide the
following diagnostic information as you power on each interconnect:
Event Node-level Interconnect LEDs Top-level Interconnect LEDs
NLI off, TLI off No LEDs illuminated No LEDs illuminated
NLI on, TLI off Red illuminated No LEDs illuminated
NLI on, TLI on Red illuminated Red illuminated
Link to NLI only Red illuminated Red illuminated
Link to TLI only Red illuminated Red illuminated
Link from NLI
to TLI
Green illuminated Green illuminated
System run Green illuminated. Amber
illuminated intermittently or
continuously (data traffic).
Green illuminated
See Section 10.3 for information on using the LEDs to diagnose link problems.
10-4 Using Component LEDs