Iex8175 rf electronics
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IEX8175 RF Electronics. Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. [email protected] Hierarchical QoS. MPLS VPN. Internet. 10 GigE. Cust n. VoIP. Cust 4. MPLS Tunnel. GigE. VideoConf. Cust 3. Customer # 1 VLAN. VideoStream. Cust 2. Data p1. Data p2.

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IEX8175 RF Electronics

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Iex8175 rf electronics

IEX8175 RF Electronics

Avo Otstelekommunikatsiooni õppetool,

TTÜ raadio- ja sidetehnika [email protected]


Hierarchical qos

Hierarchical QoS

MPLS VPN

Internet

10 GigE

Cust n

VoIP

Cust 4

MPLSTunnel

GigE

VideoConf

Cust 3

Customer # 1 VLAN

VideoStream

Cust 2

Data p1

Data p2

Cust 1

Internet


Uni and bi directional

Uni- and Bi-directional

A

A

A-C

A-C

F

B

F

B

C-A

C-A

E

C

E

C

D

D

Bi-directional Ring

(2 fibers)

Uni-directional Ring

(1 fiber)


Kiudoptika dwdm

Wavelengths can be time-division multiplexed into a series of aggregated connections

Sets of wavelengths can be spaced into wavebands

Switching can be done by wavebands or wavelengths

1 Cable can do multi terabits/sec

Kiudoptika & DWDM


Internet

SONET

SONET

SONET

SONET

DWDM

DWDM

Internet

Data

Center

Access

Access

Long Haul

Metro

Metro


Protocol and services

Protocol and Services

New Services

Handle Protocol

Internet

Access

Access


Traffic network engineering

Traffic

Engineering

Network

Engineering

Network

Planning

0

day

hour

year

week

month

second

15 min

minute

quarter

Traffic & Network Engineering

  • Traffic engineering (TE)

    • Put the traffic where the bandwidth is

    • (Sub-)second/minute time scale

  • Network Engineering (NwE)

    • Put the bandwidth where the traffic is or is soon expected to be

    • 15 minute/hour/day/week time scale

  • Network Planning (NP)

    • Put the equipment, fibers and bandwidth where the traffic is expected to be [in the future]

    • Month/quarter/year time scale


Traffic engineering te

Traffic Engineering (TE)

  • The process concerned with optimally routing of signals over existing links in a layer network

    • More specific: Optimally assigning available bandwidth to requests (to the network) for bandwidth.

  • It is an intra layer network process

  • TE process in each layer network

    • discovers the links created by network planning and engineering

    • advertises the links and their bandwidth utilisation

    • manages (set-up, release, modify) connections in the layer network; i.e. processes incoming calls for native and client connections

    • restores high grade connections on signal fail [or signal degrade] of the connection

  • It is implemented by the Sub Network Controllers within the layer network


Network engineering

Network Engineering

  • The process concerned with optimally selecting topology and bandwidth in a layer network, based on

    • (pro-active) traffic demands expected between any two locations in the network and

    • (re-active) the actual traffic demand

  • It is an inter layer network process

  • NwE process in each layer network

    • advertises the nodes and their ports within the layer network

    • monitors the layer network and determines if/when a new (topological) link should be added or an existing link should be modified or released, based on the network provider's policy

    • determines best set of connections between ports in the layer network

    • requests those connections to be set up by its server layer networks; i.e. generates outgoing calls for client connections

  • It is implemented by the (distributed) Network Engineering Controllers (NEC) within the layer network


Interfaces layer networks

Interfaces - Layer Networks

LOVC PN

LOVC

Link

LOVC VPN #1

UNI

I-NNI

LOVC VPN #2

I-NNI

STM-N

Physical

Interface

HOVC

Link

PC

HOVC PN

HOVC Permanent Connection

[non-switched]

UNI

I-NNI

Component Link

HOVC VPN

PN: Public Network

VPN: Virtual Private Network


Ressursijaotus

Dedicated Bandwidth Circuits

Shared Bandwidth Circuits

Dedicated Transport & Transfer Rate In Network

Actual Data Rate Usage vs. Time

Sum of Aggregate Bandwidth

Much Less Wasted Bandwidth

Mbps

Mbps

Time

Time

Multiple Data Customers in Shared Trunk Bandwidth

Wasted Bandwidth

Ressursijaotus


Links

Links

http://www.packetizer.com/voip/ams/papers/ams_project_description.pdf

http://www.brynosaurus.com/pub/net/p2pnat/

http://www.ietf.org/rfc/rfc1700.txt?number=1700

http://www.juniper.net/

http://www.juniper.net/solutions/literature/white_papers/200161.pdf


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