Sun Network QDR InfiniBand Gateway Switch
 
Oracle Exalogic Elastic Cloud X2-2 Hardware
 

PLA-Support>Sun Systems>SAND>Network>SN-SND: Sun Network Infiniband
 

In this Document

Symptoms

Cause

Solution

Created from <SR 3-6308393583>

Applies to:

Symptoms

In this example 0A-ETH-1 was previously working and listlinkup output  shows 0A-ETH-1 down and enabled.

NM2-GW# listlinkup |grep down

Connector 0A-ETH Present
  Bridge-0 Port 0A-ETH-1 (Bridge-0-2) down (Enabled)   <---down and enabled

*note: There are 8 ports and 2 1x4 splitter cables so the portrange is:

0A-ETH-1, 0A-ETH-2, 0A-ETH-3, 0A-ETH-4 (plugged into physical port 0A on NM2-GW switch)

1A-ETH-1. 1A-ETH-2, 1A-ETH-3, 1A-ETH-4 (plugged into physical port 1A on NM2-GW switch)

Physical components:

NM2-GW--port:0A==qsfp+-----1X4 splitter cable----(1)---SFP+==Client switch

Cause

The above NM2-GW switch listlinkup output indicates a physical layer (cable, switchport, qsfp+,sfp+)  problem on 0A-ETH-1. Possible causes include defective NM2-GW switchport, qsfp+ (transeiver), quad splitter cable or Customer uplink switchport or sfp+(transiever) or uplink Client switch port was put into  the "shut" state.

Solution

 Isolate the problem by swapping the suspected  components with known working components.  Start with the components that are th easiest to acces

Example:

1) Replace qsfp+ with known good qsfp+  and check listlinkup and LED status. If the Link comes UP, then the problem was a defective or poorly seated qsfp+ transiever

2) If no change,  put original qsfp+ back and replace sfp+ on the client switch and check listlinkup and LED status. If the Link comes UP, then the problem was a defective sfp+ transeiver

*note that the sfp+ is provided by the Customer.

3) If no change, put original sfp+ back and move sfp+ and cable end to a known working port on the client switch and check listlinkup and LED status. If the Link comes UP, then

the problem was a defective or misconfigured client switch port.

4) If no change, move  sfp+ and cable end back  to original client switch port. Move the qsfp+ and cable end to a known working NM2-GW port and check listlinkup and LED

status. If the Link comes UP, then the NM2-GW switch port is likely defective.

5) If no change, move the qsfp+ and cable end back to the original port. Move sfp+ to one of the other cables at the end of the splitter cable and check

listlinkup and LED status. If the link comes UP, then the cable is defective.

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