​Managing the lifecycle of Cisco networking hardware and software is critical for maintaining network security, performance, and compliance. Cisco defines formal End-of-Life (EoL) and End-of-Sale (EoS) policies to guide organizations in planning device replacement and upgrades. Planning for EoL/EoS transitions ensures your network remains secure, supported, and optimized without unexpected downtime or costs.

Problem Description Huawei NE40E router interfaces with Cisco C7304 router, set the same segment IP through subinterfaces, and both subinterfaces transmit VLAN 1, and run OSPF protocol, but the OSPF neighbors cannot be established in FULL state.

What are the main products of Cisco? Cisco provides IT products and services across five major technology areas: networking (including Ethernet, optical, wireless and mobility), security, collaboration (including voice, video, and data), data center, and the Internet of things.