You can try to execute the command and see but the reboot should resolve this issue completely.
clear iparp
clear fdb
I have seen sometime the issue will get resolved after executing "enable ip-subnet-lookup" command.
When the ip-subnet-lookup feature is enabled it will only store 1 network address in the IPFDB table instead of 254 separate entries (when using a /24). This can give a big improvement in the IPFDB table space, but there are a few limitations:
- Flow Redirection is not supported in the IP Subnet Lookup.
- IP-based QOS or ACL cannot be active with IP Subnet Lookup.
You will need to reboot the switch before the ip-subnet-lookup feature becomes active.
Also wanted to mentioned that if switch is running with EW-7.4.3 then we have product defect in this software version and try to upgrade the latest software version which is available for your hardware.
After performing above step if the issue still present then I would recommend you to open case with TAC.