What are the uses of sub interfaces on a Cisco router?
You would use sub-interfaces when you need to have meshed (partial or full) but have lesser number of physical interfaces. Or when you need to run various protocols between two locations. Sub interfaces were created basically to handle issues like split horizon but over the period of time have gained popularity as they give you flexibility in configurations and your design.
Dig Deeper on Network Infrastructure
Related Q&A from Sudhanshu Gupta
One difference between managed and unmanaged switches is complexity. A managed switch is more complex and requires more skills, but it offers better ... Continue Reading
Unmanaged Linksys switches don't know where to send BootP and DHCP requests. Find out what to do to fix the problem of unmanaged switches and DHCP ... Continue Reading