How to view 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:

Collect traffic statistics: Run collect counters top to start gathering interface traffic data over a defined interval .
View the report: Use display counters top interface to see the top N interfaces sorted by inbound and outbound traffic volume .
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:

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

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How to view IP traffic on Huawei core switches