Transcript Route Control

Advanced Topics of WAN
Compiled from Previous ISQS
6341 Project
November 2003
Network Peering
What is Peering?

Peering is the arrangement of traffic
exchange between Internet service
providers (ISPs).
Types of Peering

Bilateral peering
• an agreement between two parties

Multilateral peering
• agreement between more than two parties

Shared-cost peering
• Used if parties achieve equal benefits

Paid peering
• Used if one party benefits more than the
other
Peering Requirements

Exchange and updating of router
information between the peered ISPs
• Done by using Border Gateway Protocol

Interconnect at network focal points
• network access points
• regional switching points

Peering policy
ISP roles and relationships
Border Gateway Protocol (BGP)
Is a protocol for exchanging routing
 BGP is often the protocol used
between gateway hosts on the
Internet

• The routing table contains a list of
known routers, the addresses they can
reach, and a cost metric associated with
the path to each router so that the best
available route is chosen.
Service Level Agreement

A service contract between Service provider and
their customer that defines provider
responsibilities in terms of:
•
•
•
•

network levels (throughput, loss rate, delays and jitter)
times of availability
method of measurement
consequences if service levels aren't met or the defined
traffic levels are exceeded by the customer, and all costs
involved.
It specifies the forwarding service a customer
should receive. A SLA may include traffic
conditioning rules.
SLA’s
IP Services
Metrics
Service Level
Network Availability
99.9% premises to POP
Latency
80 ms or less network-wide monthly average delay
Latency
Traffic offered at service level A will be delivered with
low latency
Packet Loss
1% or less on network-wide monthly average packet
loss
Packet Loss
Traffic offered at service level B will be delivered with
low loss
Throughput
99.99% network-wide data delivery rate average per
calendar month
QoS Characteristics
Minimizes delivery delay
 Minimizes delay variations
 Provides consistent data throughput
capacity

QoS for IT
Manage sensitive applications, such
as audio and video.
 Manage delay-sensitive traffic, such
as real time voice.
 Control loss in time due to burst
congestions

Key QoS Parameters

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Latency
The time between a node sending a message and receipt of the
message by another node.
Jitter
An aberration that occurs when video or voice is transmitted over
a network, and packets do not arrive at its destination in
consecutive order or on a timely basis.
Bandwidth
A measure of data transmission capacity, usually expressed in
kilobits per second (Kbps) or megabits per second (Mbps).
Packet Loss
Example:1% or less on network-wide monthly average packet
loss.
Availability
Example: 99.9% premises to POP.
The exchange model
Exchange Routing
Exchange Switch
Route Control
Route Control



A method of identifying the best path
between two points on a network
Allows companies to gain and maintain
business-class performance over internet
Lets the user set the rules and policies
that define what the “best path” is
Intelligent Route Control vs. Border
Gateway Protocol
Upcoming Solution
Intelligent Routing
Why Intelligent Routing ?
BANDWIDTH COST SAVINGS


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Optimizes traffic by ISP
Reduces network engineering operational
expenses
Billing Remediation
Increases revenue
Downsizes and/or reduces # of links
Migration from private networks to the
internet
Link Segment Allocation
Case 1: Total 6 Mbps
Sprint
6
5
6
Undefined
4
3
$900
2
1
UUNET
$600
Undefined
Regional ISP
6
5
5
4
4
$800
3
3
2
2
1
$650
1
$700
$500
Link Segment Allocation
Case 2: Total 8 Mbps
Sprint
6
5
6
Undefined
4
3
$900
2
1
UUNET
Undefined
6
5
5
4
4
3
$800
2
$600
Regional ISP
1
$700
3
2
$650
1
$500
Link Segment Allocation
Case 3: Total 8 Mbps
Sprint
6
5
UUNET
6
Undefined
4
Undefined
Regional ISP
6
5
5
4
4
$700
$875
3
$900
2
1
3
$800
2
$600
1
3
2
$650
1
$500
Target Customers
Enterprise Customers
 Service Provider Customers

• Carrier-neutral inter-exchange
facilities
• Local exchange carriers
Route Control
Vendor Positioning
Why Companies Participate in
Bandwidth Markets ?

Now, telecommunication is global

Internet market is out of boundaries

Telecom market is specializing
How to Participate in Bandwidth
Market ?

Using a system of offers & bids
• Registering to market web sites
• Talking to the managers
Price System of Bandwidth
Depends on tier levels (oversubscription rates)
 Is highly affected by route control

The Route Control Solution

Bandwidth Utilization
The Route Control Solution

Operational efficiency
Price Comparison
COMPANY
PRODUCT
PRICE RANGE
Flow Control Platform
FCP VPN Product
$150,000–$250,000
$10,000
Orbit 1000 CPE
$20,000
$1,000/Month as a Service
and $100,000 to Purchase
Proficient
Networks
Network Policy Engine
1010A NPE 510A
NPE1010A: $50,000;
NPE510A: $35,000
Radware
PeerDirector
$39,000–$79,000
RouteScience
PathControl 5014
PathControl 5008
(VPN) 3000
$140,000–$250,000;
$100,000–$150,000;
$30,000
Sockeye
Networks
GlobalRoute
Non-Recurring: 5,000/Location; $2,000/Location for
VPN; $2,000/Month for Optimization; $2,500/Link for
Each Link
netVmg
Opnix