一种刷新转发表项的方法及设备
By receiving MAC address migration messages from interface boards and performing consistency checks on the main control board in DRNI networking, and quickly updating the outgoing ports of ARP entries, the problem of ARP entry refresh delay during server primary/backup network card switching is solved, and fast and reliable Layer 3 forwarding of distributed routing devices is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NEW H3C TECH CO LTD
- Filing Date
- 2023-11-13
- Publication Date
- 2026-07-17
AI Technical Summary
In DRNI networking, when the server switches between primary and backup network cards, the delay in refreshing ARP entries on the interface board causes Layer 3 traffic forwarding failure. Existing technologies cannot quickly and reliably refresh the Layer 3 forwarding entries on each interface board inside the distributed routing device.
The main control board receives MAC address migration messages from the interface boards, performs outgoing port consistency checks, and modifies the outgoing port of the ARP table entry to the interface board's service port after the consistency check passes. It then polls all interface boards to update their ARP table entries, ensuring a fast and reliable refresh of the Layer 3 forwarding table entries.
This enables distributed routing devices to quickly and reliably refresh the Layer 3 forwarding table entries of all interface boards after MAC address migration, avoiding frequent refreshes of interface boards and ensuring normal forwarding of Layer 3 traffic.
Smart Images
Figure CN117675692B_ABST