CFP: [Call for Papers] IEEE ICNP2014 CoolSDN Workshop

2014-06-24 Thread Yangyang Wang
apologies if you received multiple copies of this message

We cordially invite you to submit papers to the 22nd IEEE International
Conference on Network Protocols (ICNP2014) CoolSDN Workshop
http://icnp14.cs.unc.edu/workshops.html , which will be held on October 21,
in Raleigh, North Carolina, United States.



The submission information can be found at workshop web site is
http://success.cse.tamu.edu/CoolSDN2014/



Important Dates

Submission deadline:  July 10, 2014

Acceptance notification:   August 2, 2014.

Camera ready version:   August 16, 2014



Regards,



Richard Y. Yang, Yale Univ.

Jun Bi, Tsinghua Univ.

Guofei Gu, Texas AM Univ.

ICNP2014 CoolSDN Workshop Chairs


ASPATH Loop

2009-05-10 Thread yangyang. wang
Hi, NANOG:

   When I was analyzing the BGP RIB data from RouteViews, I found
that there were aspath loop in many bgp rib entries. For example, in
the file rib.wide.20090301.0319, the peer 202.249.2.169  in AS2497
observed the following aspaths:

3130 29283 3130 2914 2497
3130 7337 3130 2914 2497
3130 34486 3130 2914 2497
3130 38001 3130 2914 2497
3130 13977 3130 2914 2497
3130 25147 3130 2914 2497
3130 5433 3130 2914 2497
3130 26164 3130 2914 2497
3130 34026 3130 2914 2497
3130 31535 3130 2914 2497
3130 14363 3130 2914 2497
3130 29648 3130 2914 2497
3130 27582 3130 2914 2497
3130 39737 3130 2914 2497
3130 33796 3130 2914 2497
3130 15108 3130 2914 2497
3130 9600 3130 2914 2497
..

As we know, BGP instance running on routers don't allow loop in
ASPATH, why they can be seen in RIBs? It's some particular technical
configuration in practice? OR What's wrong with AS3130??

Thanks

Yangyang



why not AS number based prefixes aggregation

2008-09-08 Thread yangyang. wang
Hi, everyone:

 For routing scalability issues, I have a question: why not deploy AS
number based routing scheme?  BGP is path vector protocol and the shortest
paths are calculated based on traversed AS numbers. The prefixes in the same
AS almost have the same AS_PATH associated, and aggregating prefixes
according to AS will shrink BGP routing table significantly. I don't know
what comments the ISPs make on this kind of routing scheme.


-yang


Re: looking for help for the statistics data on spoofing attack events on Internet

2007-12-25 Thread yangyang. wang
Dear Mr. Morrow:

Thank you!
We have already found CAIDA's backscatter,  MIT's spoofer project. Spoofer
project focuses on how much space in the Internet could be spoofable. It is
very helpful for our experiment. But we also want to know how often the
spoofing events(such spoofing IP attacks, spoofing route update) occurs, or
the degree of their activity in real world. Monitoring the Internet widely
is very difficult,so I hope to get some useful infomation by surveying the
related statistical data and report from organization. currently, this way
has no effective result.

2007/12/24, Christopher Morrow [EMAIL PROTECTED]:

 On Dec 24, 2007 12:08 AM, yangyang. wang [EMAIL PROTECTED] wrote:
 
  We are conducting an experiment to evaluate IP source address spoofing
  attacks on Internet and want to collect some statistics data or report
 about
  it  Which organization or research group could support some statistics
 data,
  report or hints on the spoofed IP source address attack events, DNS
 spoofing
  events, router forged update events on the whole Internet or regional
  network for research analysis?

 you might get some mileage from the spoofer-project out of MIT:

 http://spoofer.csail.mit.edu/

 have fun!