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Viewing IP Traffic on Huawei Core Switches

You can monitor IP traffic on Huawei core switches using commands like display interface, display ip routing-table, and display counters top interface to view interface statistics and top traffic flows.Basic Interface Traffic Monitoring

To view traffic statistics for each interface:

  • Use display interface to see detailed statistics, including packets sent and received, errors, and interface status .
  • Use display interface brief for a concise overview of all interfaces, showing which are up or down and their IP configurations .
  • To check IP routing and ensure traffic is flowing correctly, use display ip routing-table to view routes and next hops .
Top N Interface Traffic Statistics

Huawei switches provide a Top N interface traffic report to identify the busiest interfaces:

  1. Collect traffic statistics: Run collect counters top to start gathering interface traffic data over a defined interval .
  2. View the report: Use display counters top interface to see the top N interfaces sorted by inbound and outbound traffic volume .
  3. Notes: The collection interval ends automatically, and the configuration is not saved. If the master switch in a stack fails, rerun the collect counters top command on the new master .
Log-Based Traffic Monitoring

For more detailed traffic logs:

  • Enter system view: system-view .
  • View logs: display logbuffer or display logbuffer type traffic to filter for traffic-related logs .
  • Exit log view with quit when finished.
Additional Useful Commands
  • display mac-address to see MAC addresses associated with interfaces, which helps identify devices generating traffic .
  • display arp to view IP-to-MAC mappings, useful for tracking IP traffic sources .
  • display lldp neighbor to identify connected devices and their ports, aiding in traffic analysis .
Summary

For effective IP traffic monitoring on Huawei core switches:

  1. Use display interface and display interface brief for real-time interface statistics.
  2. Use collect counters top and display counters top interface to identify high-traffic interfaces.
  3. Use log commands and ARP/MAC tables to trace traffic sources and destinations.
  4. Combine these commands to troubleshoot, optimize, and manage network traffic efficiently.
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