192.168.256.1 172.125.222.10 10.0.0.254 192.168.10 255.255.255.255

Talk Less Do More
192.168.256.1 172.125.222.10 10.0.0.254 192.168.10 255.255.255.255
IP UDP TCP HTTP TFTP
110 90 120 100 1
Physical Layer Data Link Layer Network Layer Application Layer Transport Layer
ip routing ip-routing ip route ip-route
Public IPv4 address Private IPv4 address APIPA Private IPv6 address
510 1022 30 4,094
ip default-gateway ip default-network default-gateway ip default-route
IGRP OSPF EIGRP IS-IS RIPv2
RIP EIGRP IS-IS OSPF BGP
STP (spanning tree protocol) FTP (File Transfer Protocol) TFTP (Trivial File Transfer Protocol) VTP (vlan trunking protocol)
service password-encryption service-password encryption enable secret enable password enable secret password
Switch Hub Router Bridge
ping ifconfig show vlan traceroute
Vlan 1005 Vlan 1 Vlan 100 Vlan 1000
RIPv1 EIGRP IGRP OSPF RIPv2
Split horizon rule Maximum Hop Count Spanning tree protocol Elect DR and BDR Use Feasibility Condition
Transport Data Link Session Network Physical
ssh use port 22 ssh use port 23 unsecured encrypted operates at the transport layer
RIPv2 EIGRP OSPF RIPv1