TCP/IP networking basics: hubs, switches, gateways and routing (in Technology > TCP/IP @ iusmentis.com)
Example for Configuring a Layer 3 Switch to Work with a Router for Internet Access - Sx300 Series Switches Typical Configuration Examples - Huawei
Default Gateway
Configuring NXDB for Cisco Nexus 9000 Series Switches and Communicating with NSXv Controllers (for Layer 2 VXLANs), Release 7.x - Using the Cisco Nexus 9000 Switch as the Default Gateway [Cisco Nexus 9000 Series Switches] - Cisco
Gateway Router - an overview | ScienceDirect Topics
What's the Difference Between a Hub, a Switch, and a Router? - Ask Leo!
What is a Subnet Mask Used For (on Routers and Hosts)
routing - Default gateway of host connected to two routers via switch - Network Engineering Stack Exchange
Host vs Switch vs Router
Configure router/gateway on Ubuntu issue: unable to reach hosts behind ISPs gateway (network map provided) - Server Fault
VLAN host cannot ping default gateway and no inter VLAN communications | Ubiquiti Community
Host to Host through a Router – Practical Networking .net
Refer to the exhibit. The switches are in their default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for its default gateway.