If a router has two interfaces and is routing both IPv4 and IPv6 traffic, how many ACLs could be created and used?

When considering a router with two interfaces that is configured to route both IPv4 and IPv6 traffic, the design of access control lists (ACLs) allows for specific traffic management based on protocol types. Each interface on the router can have a set of ACLs applied to it for both IPv4 and IPv6 protocols.

For each interface, you can apply one IPv4 ACL and one IPv6 ACL. Therefore, with two interfaces available on the router:

• For Interface 1:

• 1 IPv4 ACL

• 1 IPv6 ACL

• For Interface 2:

• 1 IPv4 ACL

• 1 IPv6 ACL

This results in a total of four ACLs (2 interfaces x 2 ACLs per interface). However, it’s also crucial to remember that standard configurations often allow for predefined ACLs that can be created for specific needs or use-cases and network management strategies.

While a commonly discussed configuration might yield four ACLs based on typical usage, additional considerations or variations in specific scenarios (like extended ACLs or requirements for different protocols) could lead to configurations that allow for additional ACLs beyond the straightforward application described earlier.

The provided answer states eight ACLs. This is