Troubleshooting
Problem
The appliance is generating millions of CRC and input errors.
Cause
Interface is configured as half duplex
Diagnosing The Problem
Run the command: ethtool eth
N
Where N is the ethernet interface associated with the appliance IP.
Check if the ethernet interface is running half duplex.
Resolving The Problem
Before you begin:
- It is recommended to run these commands through the IMM or DRAC console as you may loose connectivity to the machine for a few minutes while speeds are reset.
- The issue may be a switch speed setting is not on Auto Negotiating. You may also want to hard set the switch to 1000 Mb/s Full Duplex. If this is the case contact your network administrator.
Force the speed of the interface using the "
ETHTOOL_OPTS
" setting in the file /etc/sysconfig/network-scripts/ifcfg-ethN
Example:
vi /etc/sysconfig/network-scripts/ifcfg-eth0
Append the line as follows to disable Auto-Negotiation, enable Full Duplex and set up Speed to 1000 Mb/s :
ETHTOOL_OPTS="autoneg off duplex full speed 1000"
Where do you find more information?
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.5D0.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.12D8.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.1EE4.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.2B6C.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.37A8.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.4700.png)
![](/support/pages/system/files/support/swg/sectech.nsf/0/321dca2c25722ea185257d1100665dea/Content/0.542A.png)
Related Information
[{"Product":{"code":"SSBQAC","label":"IBM Security QRadar SIEM"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"Integrations - IBM","Platform":[{"code":"PF016","label":"Linux"}],"Version":"7.1;7.2","Edition":"All Editions","Line of Business":{"code":"LOB24","label":"Security Software"}}]
Was this topic helpful?
Document Information
Modified date:
16 June 2018
UID
swg21678799