RX Frame Errors/rx_length_errors were Triggered by Malformed Learning Packets in Network Bonding Mode 5/6
Last updated on SEPTEMBER 14, 2017
Applies to:Oracle VM - Version 3.0.1 and later
Linux OS - Version Oracle Linux 5.0 and later
Network bonding is configured for Mode 5 (balance-tlb) or Mode 6 (balance-alb).
RX frame errors are seen in ifconfig output:
When bonding is configured for rlb[mode=5]/alb[mode=6], bonding driver sends learning packets to keep updating the upstream switch's MAC addresses table for the slave port to ensure it's correct. Since the alb mode can move MAC addresses around amongst the set of bonding slaves, e.g when active slave fails, its MAC address is swapped with another slave chosen as next active slave.
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