Measurement andMonitoring
Yasuichi Kitmaura (kita@jp.apan.net)
Takatoshi Ikeda (ikeda@kddnet.ad.jp)

2009年6月24日水曜日

Who are we?

2009年6月24日水曜日

Yasuichi Kitamura
researcher of National Institute ofInformation and Communications
Technology (NICT) since 1989
operator of Asia-Pacific Advanced
Network (APAN) Tokyo XP from 1996
to 1999
NOC team of APAN since 1996
2009年6月24日水曜日

Takatoshi Ikeda
visiting researcher of NICT
researcher of KDDI laboratory
operator of KDDI Ootemachi Technical Center
operator of APAN Tokyo XP

Precise Introduction will be done later.

2009年6月24日水曜日

Why do you have tomonitor the network?

2009年6月24日水曜日

Why do you have tomonitor the network?

Technical reasons
Political reasons

2009年6月24日水曜日

Technical reasons
Everyone wants to use their networks
comfortable.
Some applications show the communication
performance.
Sometimes, everyone can feel thecommunication performance isn’t good
without reasons.

2009年6月24日水曜日

Political reasons
Circuit utilization has to be reported to theadministrators.
At the demonstration by the administrators...
Against the communication failure, thecurrent status should be monitored.
Some administrators want to know “its”
communication performance later.

2009年6月24日水曜日

my experience2009年6月24日水曜日

I was planning to holdthe video conference
between South Koreaand Japan.
1Gbps directconnection was
running between
South Korea andJapan.
The regular roundtrip time was 80ms.
2009年6月24日水曜日

Conference place
my officeThe RTT was much
longer than usual.
One way route frommy office to theconference place wasin the strange thing.
Maybe the reverseroute looked strange.
Because the videoconference quality
was really bad.
2009年6月24日水曜日

This case happened just after TEIN”2”
started.
All NOCS of R&E networks believed they
kept the close relationship with others, but itwas not true.
This case happened at the specific IP
address block in Korea only.

2009年6月24日水曜日

This could be avoided by the continuous
active measurement, but it’s not the realisticsolution.
To detect this bad route, it took 30 minutes
because everyone believed JP and KR wasconnected directly. They didn’t expect suchthe detour route.

2009年6月24日水曜日

Active Measurement andPassive Measurement

2009年6月24日水曜日

Active Measurement
The method of measuring the circuit
performance
The test traffic is its core element.
Some tools try to give the high load tothe target circuits.
iperf, traceroute, ping, ....

2009年6月24日水曜日

Passive Measurement
The tool for monitoring the current status of the circuits
In general, capturing packets is its main concept.
The monitoring machine
Processes of capturing packets causes the high loadto the machine.
The way of getting the real communication
performance is its issue.
ftp, recent web browsers, polycom, ...

2009年6月24日水曜日

Precise discussion will be done by Mr. Ikeda.

2009年6月24日水曜日

Issues of monitoring

2009年6月24日水曜日

Active Measurement
Measurement actions are treated as theattacks.
Your traffic might be filtered. (worst case)
Secure active measurement tools require thecollaborators. (ttcp, iperf, ...)
Because of the security reasons, somenetwork equipments don’t show the precise
information even if it’s against RFC.
2009年6月24日水曜日

Passive Measurement
You can capture the packets just near you.
You will have to get the permission ofmonitoring the remote place.
exchange points
far away places

2009年6月24日水曜日

For your reference

2009年6月24日水曜日

Our target is Research and Education
network (R&E network).
There are some National Research andEducation networks (NRENs).

2009年6月24日水曜日

R&E networknone-profit network
The network is operated by the R&E
network staff.
The routing control is based just on Access
Users Policy (AUP). No contracts.
Each NOC can control the routing withthinking both of the bandwidth and of thedelay.
2009年6月24日水曜日

In old days, R&E networks were in thehierarchical structure.
NRENs were collected at the InternationalRENs.
International RENs are connected at theirinternational exchange points.
International routes and domestic routes
were separated.

2009年6月24日水曜日

Pre-1999 International
Connection Model
APAN

Abilene

USNet AGEANT

EuroNet A

CLARA

LatinNet A

AsiaNet AAsiaNet B

USNet B

Network Research Workshop
2009年6月24日水曜日

EuroNet A

APAN Xi’An Meeting

LatinNet B

August 27th, 200718

When the next generation Internet projects
started, some NRENs had already their own
international circuits.
These days, NRENs are connected with themultiple regional international RENs.

2009年6月24日水曜日

Post-1999 International
Connection Model
GLORIAD1G

KREONET2

1G
10G
10G

SINET

10G

CERNET
2G
1G

10G

2.5G

LA

NYST CHCH

NYAPANLA

Abilene

10G
CH
1G

LA

JGN2NY622M
1G

TWARENCHDCST LA

CLARANYSV
1G

1G

10G
10G

1G622M

1G
1G
2.5G

CSTNET

155M

622M

GEANT
155M

RBNET

155M

Network Research Workshop
2009年6月24日水曜日

APAN Xi’An Meeting

August 27th, 2007

At the hierarchical period, the length of AS
paths showed the distance of the connection.
These days, the length of AS paths does notshow the best routes.
structure of RENs
L2 services (VLAN, DCN, VPN...)2009年6月24日水曜日

South east Asia status
Some area has the multiple international
REN connection. (AI3, TEIN3,...)
Some area has their own international
connection. (TH, SG,...)
Available bandwidth depends on the routes insome area. (TH, PH, ....)

2009年6月24日水曜日

2009年6月24日水曜日

jda

North America

JP

EU

Link Owners
aKR

CNkbcf

AFdeei

PKNP

fBTg

BD

IN

c

HK
LA

TH

hVN
PHig

KH

jkb

LKMY

EUh

SG*

ID

TEIN3 Project Partners
AUAustralia

MY Malaysia

CN

China

PH The Philippines

ID

Indonesia

SG Singapore

JP

Japan

TH

KR

Korea

VN Vietnam

LA

Laos

Thailand2

2.5 Gbps
1 Gbps155 Mbps
10 Mbps

622 Mbps

TEIN3 Candidate Countries
AF

Afghanistan

KH Cambodia

BD

Bangladesh

NP NepalBT

BhutanPKPakistan

IN

India

LK

Sri Lanka2

TEIN3
NOC

Number of Links* SingAREN connected to TEIN3
SG PoP at 45 Mbps
HARNET connected to TEIN3HK PoP at 18 Mbps

TEIN3 Backbone Topology March 20092009年6月24日水曜日

TEIN3PoPsAU2009年6月24日水曜日

This map can show you the bird’s eye view ofthe international connection.
Because of AUP, this map is showing just thepossibility of the connection.
In case of violating the AUP, NOCs will haveto have the discussion at the case.
This is the different point between R&E
networks and commercial networks.

2009年6月24日水曜日

What will you learn
here?

2009年6月24日水曜日

Active measurement tools and passive
measurement tools
Some of you might use them already.
perfSONAR
monitoring management tool
measurement actions are authorized.
monitoring the remote places is possible.
2009年6月24日水曜日

Summary
Monitoring is very important to detect yourNREN’s status.
Collaboration of monitoring will solve yourproblem much faster.
Human network is very important, but the
automatic monitoring system can avoid thetime difference.

2009年6月24日水曜日