Notes of PONG command on Nexus 7000

Mountain view over Devine Trees near Chilan (棲蘭), Yilan County, Taiwan. (棲蘭神木園)

We can use PONG command to measure and and analyze switch port to other switch port latency. Example of using this command can be found on PONG command reference.

My notes about Configuration Register on Cisco Routers

This page on Cisco.com defines all details about "Configuration Register" on Cisco routers.
http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/50421-config-register-use.html

The Purpose of the Configuration Register
The configuration register can be used to change router behavior in several ways, such as:

• how the router boots (into ROMmon, NetBoot)
• options while booting (ignore configuration, disable boot messages)
• console speed (baud rate for a terminal emulation session)

Configuration registers are indeed DIP switches on most of PC motherboard.

DIP-Switch as part of a PCB from 1976, by Rainglasz.
Captured on Wikipedia.