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Network communication devices - Coggle Diagram
Network communication devices
network devices
End devices
Computers, laptops, servers, printers, smart devices, and mobile devices
connected to the network by intermediary devices
Intermediary devices
Connect end devices and multiple individual networks and ensure data flow
wireless router , router, LAN switch, multilayer switch, firewall appliance
Routers
Routing table
connected routes, remote routes, No route determined
searches network address that matches the destination IP address of a packet
Uses the gateway of last resort if learned or configured; otherwise, the packet is discarded
destination network entries
Dynamic routing protocol such as EIGRP or OSPF
Static routes
Directly connected interfaces
Local Route interfaces
function
routing table determine the best path to send packets to network
encapsulate Layer 3 packet into a new Layer 2 frame and forwards that frame out the exit interface and de-encapsulate Layer 2 frame header and trailer to expose the Layer 3 packet
Provides path determination and packet forwarding
Addresses
Ethernet interfaces have Layer 2 data link addresses
MAC addresses are shortened to simplify the illustration
Devices have Layer 3 IPv4 addresses
Hub
Ethernet hub acts as a multiport repeater receives an incoming electrical signal (data) on a port forwards a regenerated signal out all ports and use physical layer processing to forward data
bridge
two interfaces connected between hubs to divide the network into multiple collision domains. Each collision domain can have only one sender at a time
LAN switches
segment a LAN into separate collision domains, one for each switch port
multiport bridges that connect devices into a star topology
forwarding decisions based on Ethernet MAC addresses
VLAN
Segments networks based on multiple factors (function, project team, or application) regardless of physical location
Creates logical broadcast domains that can span multiple physical LAN segments
Improves network performance by separating large broadcast domains into smaller ones
Prevents users on different VLANs from snooping on each other’s traffic
Spanning Tree Protocol (STP)
Prevents loops using strategically placed "blocking-state" ports
Uses bridge protocol data unit (BPDU) frames to prevent loops
Ensures a single logical pathway between all destinations on a network by blocking redundant paths