Troubleshooting
Problem
Peer groups enable the exchange of SLM data among a group of DataPower Gateways.
When creating the membership list, include the current instance.
To exchange SLM data at periodic interval, peer members must:
- Have identical SLM configurations, including the members list, the Peer Group, the IP Multicast object (name and config).
- Use the XML Management Interface to exchange data as SOAP over HTTPS. The new information is aggregated in the information store of each peer member.
- Be clock-synchronized. You can use the NTP service.
- Use the same packet transmission method, either SLM unicast peering or SLM multicast peering.
Creating a SLM peer group https://www.ibm.com/support/knowledgecenter/SS9H2Y_7.7.0/com.ibm.dp.doc/slm_slmpeergroup.html
When the SLM configuration between the peers are not identical, a hash mismatch occurs.
Symptom
The SLM policy for the peer group will not function properly. A similar exception can be observed in the error report:
1,20200101T140000Z,default,slm,error,,,21111,x.x.x.x,0x80e002a2,,,"(apply-changes) hash mismatch (have 74/QaiQPCltosaL2SKLLcLD3lOw= got
avmkr+xjbG"
1,20200101T140000Z,default,slm,error,,,21111,x.x.x.x,0x80e002a2,,,"(apply-changes) hash mismatch (have 74/QaiQPCltosaL2SKLLcLD3lOw= got
avmkr+xjbG"
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SS9H2Y","label":"IBM DataPower Gateway"},"Component":"","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]
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Document Information
Modified date:
08 June 2021
UID
swg21883705