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Network Troubleshooting

clark white
Level 2
Level 2

Dears,

I have below topology,

user is connected to access switch, access switches is connected to the distribution switch. Distribution is connected to firewall and core switch is also connected on the firewall by ether channel and all Vlan sub interface for the servers  are created on the firewall.

frontend server and backend server is on UCS chassis on VMware and it is connected by fabric interconnect to the 6800 Core switch.

user--> server-front-end--server-backend-SAN-storage

Frontend server and backend server are in one subnet.

Traffic flow.

user send a http request to the frontend server

frontend server request the file to the backend server

backend server pull the images files from the SAN storage which is as a local disk to the backend server and provide to the frontend server.

the problem is slowness to display the file when it comes to the front end server but the same file it is opening very fast in backend server

How I can trace the the slowness between the two servers which are in same subnet, I have to capture the packets though the SPAN and the investigate them in the wire shark

Anybody can route me to the tutorial of wire shark how I can trace the delay between the 2 nodes.

thanks

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