router configuration
CCNA
EIGRP Router ID: Selection Rules and Configuration
An EIGRP router ID is a 32-bit unique identifier assigned to each router in the EIGRP domain, represented in the same dotted-decimal format as an IPv4 address. This guide covers exactly how EIGRP selects a router ID automatically, how to configure one manually, a genuinely useful “sticky” behavior that catches people off guard when they...
CCNA
What Is DHCPv4 Relay?
Routers don’t forward broadcast traffic between subnets — that’s the whole point of a router, keeping broadcast domains contained. Most of the time that’s exactly what you want. But DHCP’s initial DISCOVER message is a broadcast, sent by a client that has no IP address yet and therefore no way to address anything directly. If...