Saturday, May 26, 2007

kampus libur !

kampus diliburkan dari tgl 26 mei sampai 1 juni karena wabah cacar !
http://www.keio.ac.jp/english/news/2007/070526.html

Monday, May 21, 2007

reverse proxy/http accelerator

berhubung lagi rame-rame membahas reverse proxy/http accelerator,
yng duitnya cekak biasanya pake squid, yng kebanyakan punya duit ya pakai akamai dong biar keren ! yng duitnya cekak tapi pengen "high performance" pake varnish !!!

beberapa presentasi mengenai varnish bisa didownload di:
http://phk.freebsd.dk/pubs/

Wednesday, May 09, 2007

802.20

802.16 (WiMax) aja belum banyak dideploy ini orang-orang dah mau bikin 802.20 :-)
saya kutipkan dari IEEE wireless communications Feb 2007, vol.14, no.1.

1.the emerging IEEE 802.20 standard, as known as mobile broadband wireless access. they provide an introduction to the activities with regard to this standard, including purpose and scope that the specification defines.

2.the purpose and scope of the IEEE 802.20 standard are very ambitious. the IEEE 802.20 will fill the gap between cellular networks (low bandwidth and high mobility) and other 802 wireless networks (high bandwidth and low mobility) currently use such as IEEE 802.11 WLANs and IEEE 802.16 WMANs.

3.the IEEE 802.20 standard is being designed with a modular approach in mind. this modularity means that there should be a clear separation of functionality in the system between the user, data, and control.

4.IEEE 802.20 is fundamentally data-centric and addresses these issues by targeting significantly higher spectral efficiency, lower latencies, and improved user experience. this technical differentiation provides for wide market potential not adequately addressed by 3G systems.


ya kita liat saja barang 3-5 tahun kedepan :-)

anycast "gratis"

melihat presentasi:
https://www.centr.org/docs/2007/05/Tech16_8_Kane.pdf
rupanya ada juga yng menawarkan anycast service "gratis" utk dns.
namun ini hanya utk TLD saja !

note: kata gratis sengaja saya beri tanda kutip agar pembaca bisa menyadari juga ini sebenarnya ngga gratis juga. lebih detail silahkan langsung kontak Paul M Kane

nice .jp anycasting

setelah membaca:
https://www.centr.org/docs/2007/05/Tech16_6_Sato.pdf
wah pengelola ccTLD .jp benar2 niat ya :-)
by the way, ini contoh yng baik utk ditiru utk pengelolaan teknis name server.

Friday, May 04, 2007

teTeX -> TeX live!

saya baru tau kalau teTeX sudah tidak didukung sejak Mei 2006, sebagai gantinya pengguna teTeX harus beralih ke TeX live!
http://www.tug.org/teTeX/

Wednesday, May 02, 2007

ke ui

ini dari AI3-net (di Jepang):
> traceroute6 luce.ui.ac.id
traceroute6 to luce.ui.ac.id (2001:e00:f00c:4::d8) from 2001:d30:101:1:290:ccff:fe2f:1eda, 64 hops max, 12 byte packets
1 2001:d30:101:1:20e:38ff:fe61:db1b 0.773 ms 0.793 ms 0.737 ms
2 2001:d30:101:4::2 1.221 ms 1.160 ms 1.341 ms
3 cisco2.notemachi.wide.ad.jp 2.960 ms 2.282 ms 2.826 ms
4 2001:218:2000:5000::91 3.191 ms 4.215 ms 3.365 ms
5 ge-7-1-0.a21.tokyjp01.jp.ra.gin.ntt.net 3.713 ms ge-7-1-2.a21.tokyjp01.jp.ra.gin.ntt.net 2.721 ms 2.676 ms
6 xe-1-0-0.r20.tokyjp01.jp.bb.gin.ntt.net 4.085 ms 3.210 ms 2.631 ms
7 as-1.r20.snjsca04.us.bb.gin.ntt.net 102.974 ms 104.304 ms 102.724 ms
8 xe-1-3.r02.mlpsca01.us.bb.gin.ntt.net 103.534 ms 103.307 ms 103.739 ms
9 fa-0-0-0.r00.mlpsca01.us.b6.gin.ntt.net 105.151 ms 102.551 ms 104.884 ms
10 tu-0.occaid.org.mlpsca01.us.b6.gin.ntt.net 106.720 ms 105.714 ms 107.236 ms
11 38.ge0-0.cr1.sjc2.us.occaid.net 107.385 ms 113.250 ms 109.614 ms
12 indosatatm2-gw.cust.gips-apac.occaid.net 316.507 ms 316.924 ms 317.635 ms
13 2001:e00:f00b::2 316.298 ms 318.182 ms 317.637 ms
14 2001:e00:f00c:4::d8 319.630 ms 317.586 ms 319.811 ms

ini dari ITB-net:
> traceroute6 luce.ui.ac.id
traceroute6 to luce.ui.ac.id (2001:e00:f00c:4::d8) from 2001:d30:3:320:207:e9ff:fe09:c0f5, 64 hops max, 12 byte packets
1 itb3-v6-router-vlan22.itb.ac.id 0.275 ms 0.248 ms 0.195 ms
2 itb1-v6-router-vlan4.itb.ac.id 0.602 ms 0.667 ms 0.585 ms
3 ai3-indonesia-ether.itb.ac.id 0.976 ms 1.222 ms 1.214 ms
4 client-0008-v6.itb.ac.id 1.738 ms 1.734 ms 1.963 ms
5 pos1-0-1-stm1-bb-v6-ui-itb.inherent-dikti.net 6.103 ms 6.116 ms 5.964 ms
6 2407:0:2:ffff::1 6.226 ms 6.047 ms 5.715 ms
7 2001:e00:f00c:4::d8 5.968 ms 6.035 ms 6.479 ms

sip lah, sepertinya INHERENT sudah siap dilewati IPv6 :-))