Appendix A. Under the Hood
One of the most frustrating things about networking technology is that oftentimes operators are caged into a box called the command-line interface (CLI). Anything behind the curtain doesnât exist and isnât supported. Unfortunately, I canât change the not-supported part, but I can at least show you whatâs behind the curtains and how it works.
Any additional information youâre able to pull from a piece of technology ultimately makes your network better, whether itâs better network management, graphing, or troubleshooting.
Big Scary Disclaimer
Everything Iâm about to show you in this chapter isnât supported by Juniper Networks or the Juniper Technical Assistance Center (JTAC). Donât use these commands in production. Use them at your own risk. Changing any values at a low level will cause instability in the network because the changes will not be synchronized with the control plane.
With that out of the way, letâs get on with having some fun!
The Broadcom Shell
The Broadcom shell, owned and maintained by Broadcom, is the standard CLI that you can use to directly access the Broadcom chipsets. It is a simple tool that you can put to work gathering additional debugging information from the system.
Messing around with the Broadcom shell is really powerful but at the same time really dangerous to production systems. Many of the commands are simply not documented for the average user. If you want the full documentation of the commands ...
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