What are the ranges for extended numbered ACLs?

Extended numbered access control lists (ACLs) in Cisco devices are essential for filtering traffic based on various criteria, such as source and destination IP addresses, protocols, and port numbers. The correct range for extended numbered ACLs is from 100 to 199 and 2000 to 2699.

The reason this range is correct lies in the structured way Cisco has designed ACLs. Standard ACLs are limited to the ranges of 1 to 99 and 1300 to 1999. In contrast, extended ACLs allow for greater specificity in traffic management and are therefore assigned their own unique range.

Understanding this classification helps network administrators effectively implement security policies and manage traffic in a network environment. Knowing the correct ranges is essential for configuring routers and ensuring the intended filtering of network packets.