The system might stop new MAC learning and impact the Layer 2 traffic forwarding

When the issue happens, the following error logs could be seen:
BRCM_SALM:brcm_salm_periodic_clear_pending(),195: Failed to delete Pending entres forunit = 0, modid = 0, port = x, err code = -9
LBCM-L2,pfe_bcm_l2_mac_delete(),x:FDb MAC HW-delete failed(-6) for vlan-hw-token=4mac= invalid

The above mentioned BRCM_SALM message is logged when SW learnt pending MACs are cleared but it fails.
MAC-Pending is SW learnt MACs which are not yet accepted by RE. There will be a periodic thread running which will clear pending MACs.

To restore from the problematic status, consider rebooting the system in the maintenance window.

https://prsearch.juniper.net/problemreport/PR1475005