Discovery switches at my Network

[Akotb]

What is atool help me to discover the serail number of all switches connected at my network? 

[MichaelMcCoy · Accepted solution]

If you have cdp running, that may be your best bet.  Are all of the switches Cisco?  How big is the network, about how many switches are there?

[Akotb]

Thanks for your reply 

I didn't have cdp. not only cisco i have other model. I have between 250- 300 switch at alot of places and have a static ip for every place also router is cisco 

[MichaelMcCoy]

Well if you have other vendors in the environment, you may also want to consider not using cdp and using lldp.  It is the exact same, CDP is proprietary and will only bring back results for Cisco devices.  LLDP will bring back cisco, hp, dell, etc devices.

[Akotb]

How can make this?

What's the steps? And also any program help me to discover 

[MichaelMcCoy]

The same way you would apply cdp

Switch#(config)cdp run - for Cisco devices

or

Switch#(config)lldp run - for other devices not just Cisco

https://www.cisco.com/assets/sol/sb/Switches_Emulators_v2_3_5_xx/help/250/index.html#page/tesla_250_olh/lldp_cdp.html
https://ipcisco.com/lesson/lldp-configuration-on-cisco-ios/#:~:text=LLDP%20Configuration%20on%20Cisco%20IOS&text=LLDP%20Configuration%20Topology%20LLDP%20is,disable%20lldp%20on%20that%20device.&text=To%20specify%20the%20TLVs%20on,tlv%2Dselect%20tlv%E....

Those are two articles that should help you as well.