TWSD-1129 - ha arp interval delay

Review Request #1370 — Created Feb. 6, 2026 and updated

kevin.poh
APV10
rel_apv_10_7
TWSD-1129
mingji, philpeng, weikai

Based on the report, the HA ARP interval configured on the Floating IP appears to be applied at twice the expected duration. For example, when the HA ARP interval is set to 30 seconds, packet captures in Wireshark show ARP packets being sent every 60 seconds.

After analysis, this issue was identified as a logic flaw within the existing code architecture. The fix has been implemented in version 10.4.2.104 (Bug ID: 134120). To apply this fix to our codebase, the relevant changes will need to be selectively integrated rather than directly patching the entire file, due to the significant differences in the code structure.

  • Setup HA environment between two devices
  • Setup the Floating IP for both HA Group
  • Track the arp package either using tcpdump or Wireshark based on the Floating IP Address

Before fix :
It shows the arp packet is send every 60 secs (the settings was 30 secs)

After fix :
The arp packet was send according to the time set (30 secs)


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