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An Access Control List (ACL) is a critical feature in Cisco networking, used for security and traffic management. It consists of a set of rules designed to filter network traffic by specifying which users or systems are granted access to network resources and what operations they can perform. ACLs are commonly configured on devices with...
If a router interface is configured with OSPF, the router must determine if another OSPF neighbor is on the link. To do this, the router forwards a Hello packet containing its router ID to all OSPF-enabled interfaces as multicast. The OSPF process uses the router ID to recognize every router individually in the OSPF area....
In networking, understanding the differences between a switch and a hub (switch vs. hub) is fundamental for students and networking professionals. While hubs were historically used to connect devices in local area networks (LANs), modern networks rely on switches for efficiency, scalability, and security. This article explores their roles, distinctions, and practical applications, with Cisco-specific...