Qunar Tech Salon
Dec 22, 2020 · Operations
Analysis of ARP Cache Behavior and Failover Issues in a Dual‑Firewall Environment
This article details a network outage caused by ARP cache state transitions, neighbor reachability detection differences between Linux 6.0/7.0, Cisco NXOS ARP timeout, and keepalived standby handling, explaining how these factors led to traffic disruption and the eventual root‑cause resolution.
ARPCisco NXOSKeepalived
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