Links to member institutionsInternational links

CARNet links to other networks

At the beginning of the year 2000 CARNet had 4 links which connected CARNet with other networks: 2 international links and 2 links to networks in Croatia. International links were the link to the USA (link to MCI, 4 Mbps) and the link to Vienna (EBONE, 2x64 kbps = 128 kbps). Links to IP networks in Croatia are those to HT - Croatian Telecommunications (HINET, 2 Mbps) and HRT - Croatian Radio and Television (2 Mbps).

On 21 October 2000 CARNet was connected to the Pan-European research network TEN155. The speed of this link is 34 Mbps, and the configuration is such that 17 Mbps are intended for traffic towards the USA, and the other 17 Mbps for traffic towards Europe.

The number of downtimes of those links and the total duration, with maximal and average duration of downtimes, as well as the percentage of time during which the links were available are presented in the following table:

Link

Total duration of downtime

Number of downtimes

Max

Ave

UP-time (%)

HINET

0 d, 14 s, 53 m

8

0 d, 11 s, 59 m

0 d, 1 s, 51 m

99.83

HRT

0 d, 10 s, 48 m

19

0 d, 7 s, 44 m

0 d, 0 s, 34 m

99.877

MCI

0 d, 2 s, 32 m

15

0 d, 0 s, 54 m

0 d, 0 s, 10 m

99.971

EBONE

0 d, 2 s, 32 m

15

0 d, 0 s, 54 m

0 d, 0 s, 10 m

99.971

TEN155 (USA+Europe)

0 d, 0 s, 0 m

0

-

-

100

The overview of the realised CARNet traffic at all links with relation to other networks is presented in the following tables (separate table for TEN155):

2000
in Gb

MCI in

MCI out

EBONE in

EBONE out

HRT in

HRT out

HT in

HT out

January

8060

3080

326

177

181

697

1280

750

February

8020

2370

208

174

156

849

1370

747

March

9020

3160

20

285

151

1140

1800

871

April

9290

2720

19

246

106

929

1740

854

May

9730

3310

9

236

111

955

1810

1040

June

9560

3770

21

6

94

781

1790

1600

July

9680

3450

21

0

85

485

1730

1510

August

9270

3430

17

2

110

731

1540

1300

September

9740

3230

43

0

135

764

2260

1590

October

10000

4870

60

0

175

767

2570

1270

November

7640

3290

30

0

197

735

2610

1690

December

595

6

1

0

84

165

953

953

Total

100605

36686

775

1126

1585

8998

21453

14175

 

TEN155 (Gb)

2000

TEN USA in

TEN USA out

TEN EU in

TEN EU out

November

18400

8600

8000

3290

December

10400

7900

2900

5970

Total

28800

16500

10900

9260

Table with data about the total transferred two-ways traffic between CARNet and the world:

Total traffic CARNet –the world (Gb)

INCOMING

OUTGOING

TOTAL

164118

86745

250863

Regarding increase in the link speed to other networks the total transferred traffic is substantially greater compared to previous years:

Link to HT (HINET)

Link to HINET is the most important peering currently held by CARNet within Croatia. The CIX project will substantially expand this practice of peers with the Croatian service providers.

Link to HRT

Link to HRT is on the average the least utilised CARNet outer link with the average annual utilisation of 2.5 % in incoming, that is 14.2% outgoing direction.

 


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