A fix is available
APAR status
Closed as program error.
Error description
A VIOS Server will not forward traffic from its VIO Clients to the external network. Packets from the VIO Client travel to the hypervisor (phype) but the packets are dropped by the hypervisor as it attempts to deliver the packet to the VIOServer's trunk adapter. The hypervisor will have dropped the packets because there are no buffers to place the data in. On the VIOServer, interrupts are not activating the trunk adapter to read and remove data from its buffers. This results in having full buffers at the trunk adapter. Since the trunk adapter's buffers are full, phype cannot deliver the data and so VIO Clients cannot get packets through the SEA adapter and out to the network. The problem was discovered on P7 systems where Vlans on the SEA are used. "Hypervisor Receive" errors on the trunk adapter will increase as this problem occurs and the VIO Clients are not able to reach the outside network.
Local fix
Problem summary
Unresponsive VIO Clients with traffice not forwarded to external network.
Problem conclusion
Ensure proper locking around receive scheduling operations.
Temporary fix
Comments
5300-11 - use AIX APAR IZ98424 5300-12 - use AIX APAR IZ98126 6100-04 - use AIX APAR IZ97605 6100-05 - use AIX APAR IZ97457 6100-06 - use AIX APAR IZ96155 7100-00 - use AIX APAR IZ97035
APAR Information
APAR number
IZ97035
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2011-03-21
Closed date
2011-03-21
Last modified date
2013-04-16
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U832906
UP11/05/10 I 1000
PTF to Fileset Mapping
U832906 devices.vdevice.IBM.l-lan.rte 7.1.0.15
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Document Information
Modified date:
16 April 2013