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WAN 04 Branch Connections, VPN, Routing - Coggle Diagram
WAN 04
Branch Connections
Broadband
Multiple Signals
Multiple Traffic Types
Small Branch Offices
Types
Cable
DSL
Fiber-to-the-Home (FTTH)
Cellular / Mobile
Wi-Fi Mesh
Satellite
Cable Systems
Internet, Television & Telephone
Media
Coaxial
Hybrid Fiber-coaxial
(HFC)
Equipment
Cable Modem Termination System
(CMTS)
At the Cable Operator.
Cable Modem
At the Subscriber
DSL
Copper Wires
Types
Asymetric
(ADSL)
Higher downstream bandwidth
Symmetric
(SDSL)
Same bandwith on same directions
Not a shared medium
(Separate connection to DSLAM)
Equipment
CPE
Modem
DSLM
(DSL Access Multiplexer)
Wireless
Municipal Wi-Fi
Mesh of interconnected access points.
Cellular / Mobile
2G / 3G / 4G (LTE)
Satellite
WiMAX
Replaced by LTE & Cable, DSL
VPN
Types
Generic Routing Encapsulation
(GRE)
No Encryption
For
Multiprotocol
IP Multicast Traffic
Developed by Cisco
Stateless
Additional 24 byte overhead
No Flow Control
Site-to-Site
Connect entire networks
End Hosts receive normal TCP / IP traffic
from the VPN gateway.
Encryption --. By VPN Gateway
Remote-access
Telecommuters / Mobile Users / Extranet Traffic
Connect Individual hosts securely to a network.
VPN Client Software on end devices.
IPSec
Support Encyption
Advantages
Cost Savings
Scalability
Compatible with Broadband
Security
Dynamic Multipoint VPN
(DMVPN)
Cisco Software Solution.
Next Hop Resolution Protocol
(NHRP)
Multipoint GRE Tunnels
IP Sec Encryption
Components
VPN Gateway
Router
Firewall
Cisco Adaptive Security Appliance
(ASA)
Definition
Routing
Distance Vector
Within Same Company or AS
Routers share only it's routing tables
Routing based on limited information
Easy to setup & configure
Slow convergence
Metric
Number of hops
Examples
RIP
IGRP
Link-State
Routers share the complete map of the network.
More information for decisions
Difficult to setup
Fast Convergence
Metric
Bandwidth
Delay
For Larger networks
Examples
OSPF
IS-IS