Working from the my last couple of EIGRP posts I am going to try and crystallize some of the material found by working through questions found in Stewart, B,D., Gough, C (2008). CCNP BSCI Official Exam Certification Guide, Fourth Edition. Indianapolis: Cisco Press.
On what occasion should you consider configuring the bandwidth on subinterfaces?
In multipoint networks where one differing speeds allocated to the Virtual Circuits (VCs), it is easier to manage and maintain the configuration when each VC is logically treated as its own interface or point-to-point link.
In this case the bandwidth command can be configured on each subinterface which will allow different speed VCs while maintaining optimum use of each. The links that have the same configured Committed information rate (CIR) are represented as a single subinterface with a bandwidth that reflects the aggregate CIR of all the circuits.
Resources:
Notes and Notices:
This is a part of my personal BSCI notes and research to assist myself in learning and understanding the concepts and theory for the BSCI exam. I learn by making notes reading and writing things down and wish to file them where I can’t lose them. These notes are not to be seen, judged or mistaken for replacements to Cisco recognized and authorized training which I personally support and attend and suggest you undertake if you are going for the BSCI Certification.