IMT 546 WAN Technologies

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8/8/2019 IMT 546 WAN Technologies

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IMT 546

WAN Technologies

Bob Larson

outers

Switching vs. Routing

Wide Area Net works (WANs)

Wide Area Net work (WAN)

Links net works or devices over larger geographicalarea Can be across town or across the globe

Connections can be part-time or full-time MODEM & ISDN are traditional part-time (on-demand)

E1/T1s, Frame Relay are traditional full-time net works

Cable and DSL are newer full-time (always-on) net works

Typically involve a 3rd-party service provider

WAN bandwidth determined by service provider Greater bandwidth the greater the monthly cost

Connections are often Serial (64kbps-45Mbps) Typically slower than the LANs they connect

Typically connect to LANs via a router

Routers and WAN switches

WAN Service Providers

WAN Links Connect LANs

Typical Corporate WAN Net works

WAN Distribution Net work

Access Links

Distribution Links

Dedicated Connections (Leased Lines)

Typical connections on a dedicated net workmay operate at the following speeds: 56 kbps

64 kbps

T1 (1.544 Mbps) US / E1 (2.048 Mbps) European

T3 (44.736 Mbps) US / E3 (34.064 Mbps) European

Dedicated Links (New Kids on the Block)

Digital Subscriber Line (DSL)

Asymmetric Digital Subscriber Line (ADSL)

High Data-Rate Digital

Subscriber Line (HD

Symmetrical Digital Subscriber Line (SDSL)

Very High Data Rate Digital Subscriber Line(VDSL)

Cable modems

Packet-Switched Net works

X.25 enhancement on POTS

Frame relay time-share alternative to leased lines

ATM (cell relay) high speed through uniformity

Circuit-switched Connections

Asynchronous Dialup (POTS) Plain old telephone service (POTS)

ISDN Basic Rate Interface (BRI)

ISDN Primary Rate Interface (PRI)

Integrated Services Digital Net work (ISDN)

Wireless WAN Alternative

2.4GHz Antennas for Long Range

13.5 dBi YagiDistances over

miles @ 2 Mbps11.7 Km @ 2 Mbps

3.6 miles @ 11 Mbps

5.8 Km @ 11 Mbps

21 dBi Solid DishFor distances up to

25+ miles @ 2 Mbps40+ Km @ 2 Mbps

20.5 miles @ 11 Mbps

33 Km @ 11 Mbps

Note: Distances include5

0 feet of low loss cable and1

0 dB fade margin

NoWY R Net work Fife

WAN Line Types and Bandwidth

MCI UUNet

Spans more than 4,500 Points of Presence (PoPs) throughout North America, Europe and the Pacific Rim, and is arguably the world's topInternet backbone. Link

Latency

Technology Convergence

What is AVVID?

Architecture for Voice, Video and Integrated Data Provides the framework (strategy) for today's Internet

business solutions Provides the road map for combining business and

technology strategies into one cohesive model Delivers the e-business infrastructure and intelligent

net work services that are essential for rapid deployment of emerging technologies and new Internet businesssolutions

Provides an enterprise foundation that combines IPconnectivity with security, high availability, and quality of service

IP Telephony (VoIP)

IP Video Conferencing

Wireless LANs (WLANs)

Cisco AVVID Security

Virtual Private Net works (VPNs)

Content Net working

IP Contact Center

Storage Net working

IMT 546 WAN Technologies

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