Known Issues
The following sections describe known issues in firmware releases and possible workarounds.
| Internal Ref | Issue | 
| 3436244 | Description: On rare occasions, a 'group join' request may reach a timeout. | 
| Workaround: N/A | |
| Keywords: SHARP | |
| Fixed in Version: 31.2012.1024 | |
| 3198634 | Description: When using HDR speeds on NDR systems with NDR optic cables, the link does not raise. | 
| Workaround: N/A | |
| Keywords: HDR Speed, Optic Cables | |
| Discovered in Version: 31.2012.1024 | |
| 3323781 | Description: GMP MADs with GRH header towards the Router are not supported. | 
| Workaround: N/A | |
| Keywords: Routers | |
| Discovered in Version: 31.2010.5042 | |
| 2922333 | Description: In some cases, MMS4X00-NL1.2 may have low BER. | 
| Workaround: N/A | |
| Keywords: Signal Integrity | |
| Discovered in Version: 31.2010.2110 | |
| 2838195 | Description: Using NDR speed with Optical Transceivers causes bandwidth to be 350Gb/s instead of 400Gb/s in small packets. | 
| Workaround: N/A | |
| Keywords: Optical Transceivers | |
| Discovered in Version: 31.2010.1310 | |
| 2834238 | Description: When using Optical Transceiver, toggling a port in a cage may toggle the adjacent port in the cage. | 
| Workaround: N/A | |
| Keywords: Optical Transceivers, Port Toggle | |
| Discovered in Version: 31.2010.1310 | |
| 955641 | Description: VL_HIGH_LIMIT is not affecting the VL arbiter as expected. | 
| Workaround: Arbitration table should be set using only the low priority VL arbitration table. | |
| Keywords: VL Arbitration | |
| Discovered in Version: 31.2010.1310 | |
| 1249608 | Description: Configuring weight "0" for VL, results in unexpected behavior. | 
| Workaround: Arbitration table should be configured with weights other than "0". | |
| Keywords: VL Arbitration | |
| Discovered in Version: 31.2010.1310 | |
| 2057793 | Description: Congestion profiles in VS-MAD PortProfileSetting support only fixed mode. Percentage mode is not supported. | 
| Workaround: N/A | |
| Keywords: InfiniBand Congestion Control | |
| Discovered in Version: 31.2010.1310 |