Issue Description
S9700 Cluster SPU(V200R003C00SPC300) reset abnormally 2 times in three days. The Huawei S9700 is in Core layer and SPU Board is as firewall function.
Handling Process
1.Check the connected terminal’s behavior when it becomes online, if it send the arp actively
2.Check if there exists some kind of ip scanning tools in network part, which will cause a mass of persistent arp-miss
3.Check ‘display arp’ more times, check if the unreal table just are some a few special ip
After the analysis we found that the problem is when the device receives amounts of unknown source uncast packets ,the memory will increase continuously ,
And finally the boards will reset for lack of memory . We installed the patch VASP-V200R003HP0026.pat and the problem disappeared.
Root Cause
The problem is when the device receives amounts of unknown source uncast packets ,the memory will increase continuously ,
And finally the boards will reset for lack of memory . And this problem can be solved by installing the new patch. So the root cause is a software bug.
Solution
The solution is installing the software patch VASP-V200R003HP0026.pat to fix the software bug.
Huawei S9700 Series switch:
honesorry 