backbone network connects multiple LANs
In backbone network station/endpoint/server/pc is not directly connected to backbone
categories:
bus backbone
star backbone
connecting remote LANs
backbone handles a total load higher than one of the LANs backbone connecting
A backbone is a part of computer network that interconnects various pieces of network, providing a path for the exchange of information between different LANs or subnetworks. A backbone can tie together diverse networks in the same building, in different buildings in a campus environment, or over wide areas. Normally, the backbone's capacity is greater than the networks connected to it.
A large corporation that has many locations may have a backbone network that ties all of the locations together, for example, if a server cluster needs to be accessed by different departments of a company that are located at different geographical locations. The pieces of the network connections (for example: ethernet, wireless) that bring these departments together is often mentioned as network backbone. Network congestion is often taken into consideration while designing backbones.
A distributed backbone is a backbone network that consists of a number of connectivity devices connected to a series of central connectivity devices, such as hubs, switches, or routers, in a hierarchy.
A collapsed backbone (inverted backbone, backbone-in-a-box) is a type of backbone network architecture
In the case of a collapsed or inverted backbone, each hub provides a link back to a central location to be connected to a backbone-in-a-box. That box can be a switch or a router. The topology and architecture of a collapsed backbone is a star or a rooted tree.
concepts & protocols
OSPF
BGP,MBGP
IS-IS
QoS
VRRP
MPLS:LDP,RSVP
L3 VPN
VRF /context routing
Policy based routing
Aggregation
Switching
VLAN
Trunk
802.1q VLAN tagging
STP/RSTP, Span Tree Protocol/Rapid Span Tree Protocol
EAPS, ethernet automatic protocol switching
L2 QoS
Stacking, when you have more than one switch
VRRP
Dynamic routing protocols
Link aggregation
Security
stateful inspection concept
zone/VR
VSYS
dynamic routing protocols; OSPF,BGP
IPSEC(VPN)
NSRP(netscreen redundancy protocol)
screening options
