wissel.net

Usability - Productivity - Business - The web - Singapore & Twins

Dear SingTel, please fix your routing performance!


Slashdot asked for the latency to their site, so I ran a few tests with pretty consistent results in the 250ms range. Slashdot labels that as "still stuck on dialup or in space". Their expectations for overseas users was 80 to 150ms. Puzzled by the result (local websites typically respond in the sub 2ms range), I used traceroute to get to the bottom of this. Here are the results:
Hop IP DNS Name Packet 1 Packet 2 Packet 3 AVG Delta
1 192.168.1.1 router 0.3730 0.5390 0.3200 0.4107

 

2 202.166.123.170 (202.166.123.170) 5.9160 4.8020 4.7630 5.1603

 

3 202.166.123.169 (202.166.123.169) 2.7000 2.6150 2.8210 2.7120 -47.45%
4 202.166.121.101 (202.166.121.101) 3.7700 2.8390 2.5490 3.0527 12.56%
5 202.166.120.186 (ae6-0.singha.singnet.com.sg) 2.8160 7.1180 3.6210 4.5183 48.01%
6 202.166.126.41 (ae5-0.beck.singnet.com.sg) 29.7140 3.1530 2.9850 11.9507 164.49%
7 203.208.190.130 (203.208.190.130) 6.1800 3.6980 3.0630 4.3137 -63.90%
8 203.208.182.153 (ge-4-0-6-0.sngc3-cr2.ix.singtel.com) 3.0040

 

 

 

 

 

203.208.151.177 (ge-0-1-7-0.sngtp-dr1.ix.singtel.com)

 

3.9300 2.9730 3.3023 -23.44%
9 203.208.171.186 (203.208.171.186) 180.7350

 

 

 

 

 

203.208.153.162 (203.208.153.162)

 

193.0680 192.9220 188.9083 5620.45%
10 203.208.171.154 (203.208.171.154) 185.7070

 

 

 

 

 

203.208.171.158 (203.208.171.158)

 

189.3080 189.1780 188.0643 -0.45%
11 67.17.192.141 (67.17.192.141) 185.5320 181.1660 181.5870 182.7617 -2.82%
12 64.208.27.50 (savvis-1.ar4.SJC2.gblx.net) 192.5370 185.9260 185.3730 187.9453 2.84%
13 206.28.98.117 (cr2-te-0-5-0-1.sfo.savvis.net) 185.3240 201.3570 202.9370 196.5393 4.57%
14 204.70.196.246 (cr2-tengig-0-7-0-0.chicago.savvis.net) 239.1180 234.3400 234.1810 235.8797 20.02%
15 204.70.195.122 (hr2-tengigabitethernet-12-1.elkgrovech3.savvis.net) 228.7670 240.4970 240.9600 236.7413 0.37%
16 64.37.207.158 (das5-v3032.ch3.savvis.net) 240.7050 244.1670 243.6270 242.8330 2.57%
17 64.27.160.194 (64.27.160.194) 240.7910 264.4990 253.7380 253.0093 4.19%
18 216.34.181.45 (slashdot.org) 235.7960 242.7860 242.3070 240.2963 -5.02%

Checking for the hosts that created that 5000% jump in latency it turns out, they are SingTel's:
stw@box:~$ whois 203.208.171.186
% [whois.apnic.net node-3]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

inetnum:        203.208.171.128 - 203.208.171.191
netname:        SINGTEL-IX-AP
descr:          Singapore Telecommunications Pte Ltd
descr:          31C Exeter Road, Comcenter III
descr:          Unit #06-06
descr:          Singapore 239734
country:        SG
admin-c:        SAK3-AP
tech-c:         SAK3-AP
status:         ASSIGNED NON-PORTABLE
notify:         shanali@singtel.com
mnt-by:         MAINT-SINGTEL-IX
changed:        shanali@singtel.com 20070615
source:         APNIC

stw@box:~$ whois 203.208.153.162
% [whois.apnic.net node-5]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

inetnum:        203.208.153.128 - 203.208.153.191
netname:        SINGTEL-IX-AP
descr:          Singapore Telecommunications Pte Ltd
descr:          31C Exeter Road, Comcenter III
descr:          Unit #06-06
descr:          Singapore 239734
country:        SG
admin-c:        SAK3-AP
tech-c:         SAK3-AP
status:         ASSIGNED NON-PORTABLE
notify:         shanali@singtel.com
mnt-by:         MAINT-SINGTEL-IX
changed:        shanali@singtel.com 20070615
source:         APNIC

Looks very much like an underperforming switch/router/filter. SingTel, please fix that!

Posted by on 25 April 2013 | Comments (0) | categories: Buying Broadband

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