![]() | Sun System Handbook - ISO 4.1 October 2012 Internal/Partner Edition | ||
|
|
![]() |
||||||||||||||||||||||||||||||||||||
Solution Type Troubleshooting Sure Solution 1396100.1 : Sun Storage 7000 Unified Storage System: Causes and Solutions for Well Known General Networking Problems
In this Document
Applies to:Sun Storage 7310 Unified Storage System - Version Not Applicable to Not Applicable [Release N/A]Sun ZFS Storage 7420 - Version Not Applicable to Not Applicable [Release N/A] Sun Storage 7210 Unified Storage System - Version Not Applicable to Not Applicable [Release N/A] Sun Storage 7110 Unified Storage System - Version Not Applicable to Not Applicable [Release N/A] Sun ZFS Storage 7320 - Version Not Applicable to Not Applicable [Release N/A] 7000 Appliance OS (Fishworks) NAS head revision : [not dependent] BIOS revision : [not dependent] ILOM revision : [not dependent] JBODs Model : [not dependent] CLUSTER related : [not dependent] PurposeThis document will list some of the more common causes of loss of general network connectivity. Where the problem is not specific to one particular data service protocol or clients of a particular directory service, and affects both the Management Interface and client data share access equally. To discuss this information further with Oracle experts and industry peers, we encourage you to review, join or start a discussion in the My Oracle Support Community - 7000 Series ZFS Appliances
Troubleshooting Steps1. General Checks for Network OutagesFirst rule out problems with the network infrastructure. 2. Loss of network following configuration changeBecause of the way the 4 layer network model on the appliance works, making changes at the datalink or device levels will mean that the routing and interface levels will need to be removed by the system before the lower level changes can be applied. The interface and routing information should then be applied again once the change has been made. However, if for some reason the change cannot be applied then the interface and routing layers cannot be reapplied and the network connectivity will be lost. An example of this would be when changing an existing datalink to make a Link Aggregation by adding another device. If the switch that the devices are connected to does not use LACP and the correct properties are not selected then the link will not become active and the interface cannot be applied back. For further details on possible impact to routing of changing or removing a datalink, also see : 3. One or more interfaces in an IPMP group are marked as failedIf probe-based failure detection is used for interfaces in an IPMP group, you may find some or all of the interfaces being failed intermittently. This is often due to a default router that is being used as a target for the ICMP probes from the test interfaces in the IPMP group. These routers can often be "intelligent" switches that can prioritise network traffic when they become busy. A lower priority is given to ICMP traffic which can increase the return times for the ICMP probes to greater than the timeout value set to decide if the interface has failed. 4. Other causes of network problems
This is an illegal configuration for most types of switch - see:
If SNMP is being used to monitor the appliance and a lot of network interfaces are configured then this can lead to problems with the SNMP service which can then hog CPU resource. Please see:
If you are experiencing problems with nge interfaces intermittently failing on 7x10 Unified Storage appliances and you are running with appliance kit version less than 2010.08.17.3.1 see:
If your BUI shows your network devices are only connected at half-duplex please see:
Please see:
Back to <Document 1392086.1> Sun Storage 7000 Unified Storage System: How to Troubleshoot Network Problems.
References<NOTE:1331769.1> - Sun Storage 7000 Unified Storage System: How to Troubleshoot Performance Issues<NOTE:1388529.1> - Sun Storage 7000 Unified Storage System: How to Troubleshoot ZFS Storage Pool Issues <NOTE:1372016.1> - Sun Storage 7000 Unified Storage System: The network connection keeps getting set to half duplex <NOTE:1382065.1> - Aggregation with each interface connected to a seperate network switch <NOTE:1165144.1> - Sun Storage 7000 Unified Storage System: Networking - Default or static routes lost <NOTE:1321373.1> - Sun Storage 7000 Unified Storage Systeme: Default route vanishes on one cluster node when network configuration is changed on other node. <NOTE:1392086.1> - Sun Storage 7000 Unified Storage System: How to Troubleshoot Network Problems <NOTE:1395461.1> - Sun Storage 7000 Unified Storage System: Best Practice Recommendations for Network Configuration <NOTE:1397685.1> - Sun Storage 7000 Unified Storage System: nge network interfaces may disappear from the appliance under certain conditions <NOTE:1397764.1> - Sun Storage 7000 Unified Storage System: Appliance may hang, run slowly or lose network connectivity when using SNMP to monitor many network interfaces <NOTE:1022238.1> - Sun Storage 7410 recovery procedure for mismatched network device names. Attachments This solution has no attachment |
||||||||||||||||||||||||||||||||||||
|