Layer 3 switches can work at Layer 2 and Layer 3 and be deployed at the access layer or aggregation layer as user gateways. Switch configurations used in this example apply to all versions of S12700 and S12700E switches. 04-09-2022 01:55 AM The two main advantages are that you limit STP to the access layer and you can use both uplinks as they are L3 although with. This document provides design guidance for implementing a routed (Layer 3 switched) access layer using EIGRP or OSPF as the campus routing protocol. It is an accompaniment to the hierarchical campus design guides, Designing a Campus Network for High Availability and High Availability Campus. This chapter explains configuring Layer 3 wireless controller deployments on Cisco Catalyst 9800 series, covering L3 access setup, OSPF and PIM multicast integration, DHCP/NAT with VRF, and verification commands. enables client subnet segmentation, overlapping IP support, and a scalable network. A Layer 3 switch is a high-performance network device that combines the port density and wire-speed forwarding of a Layer 2 switch with the IP routing intelligence of a router.
[PDF Version]