How to check the network performance for smooth transferring of huge data?

Question

We have cisco network setup and we often find that we are having issues while transferring huge amount of data between our database, Is it possible to check the network performance and any latency or anything is interfering with our traffic. thank you.

Answer 1

Hello,

To further troubleshoot your transfer issue you'll need to collect packet captures at certain points throughout the data transit path to compare the "working" vs. the "slow" state. During a slow transfer you can verify if the any data transfer packets are being punted incorrect to the CPU of any of the transit devices. For example, this can occur when traffic has to ingress and egress the same interface on a Cisco router/switch. To rectify the incorrect punting of data traffic you can configure [no ip redirects] on these transit interfaces and collect CPU transfers.

-How to collect CPU capture on Nexus devices.

https://community.cisco.com/t5/networking-documents/using-ethanalyzer-on-nexus-platform-for-control-plane-and-data/ta-p/3142665

-Information about IP redirects

https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/nx-os-software/213841-understanding-icmp-redirect-messages.html