![[CAIDA - Center for Applied Internet Data Analysis logo]](/images/caida_globe_faded.png "Go to CAIDA home page")
April 30, 2001
|
SPAWARSYSCEN - SAN DIEGO e-mail address: spendlov@spawar.navy.mil PHONE 619-553-2918 FAX 619-553-1690 laverty@spawar.navy.mil Frank Schindler PHONE 619-553-2845 FAX 619-553-1690 schindl@spawar.navy.mil |
|
University of California, San Diego (UCSD) 9500 Gilman Drive La Jolla, CA 92093 Dr. Kimberly Claffy PHONE 858-534-8333 FAX 858-822-0861 kc@caida.org Contract/Financial Contact Lynnelle Gehrke PHONE 858-534-0243 FAX 858-534-0280 lgehrke@ucsd.edu |
Quarterly Status Report
Predictability and Security of High Performance Networks
1.0 Purpose of Report
This status report is the quarterly cooperative agreement report (CDRL A001) which summarizes the effort expended by the UCSD's Cooperative Association for Internet Data Analysis (CAIDA) program in support of SPAWARSYSCEN-SAN DIEGO and DARPA on Agreement N66001-96-2-8922.
2.0 Project Members
| UCSD hours: | |
| Dr. kc Claffy: | 215 |
| David Moore: | 275 |
| Other CAIDA Staff: | 2909 |
| University of Waikato hours: | 32 |
| Total Hours: | 3431 |
3.0 Project Description
UCSD/CAIDA is focusing on advancing the capacity to monitor, depict, and predict traffic behavior on current and advanced networks, through developing and deploying tools to better engineer and operate networks and to identify traffic anomalies in real time. CAIDA will concentrate efforts in the development of tools to automate the discovery and visualization of Internet topology and peering relationships, monitor and analyze Internet traffic behavior on high speed links, detect and control resource use (security), and provide for storage and analysis of data collected in aforementioned efforts.
4.0 Performance Against Plan
CAIDA was granted a one year no cost extension to continue work on this award, which expands the official end date to July 15, 2001. Task 4, Option 1 of this award was also obligated in April 2000. Due to problems with delivery of DAG OC48mon cards, we have requested a further no cost extension until October 15 in order to complete testing.
As a result of the no-cost extension and re-budgeting of the remaining funds, the original Tasks and schedule for completion have been re-defined as follows:
Task 1 still encompasses work on Coral OC48mon, and has expanded to include work on the Gigabit Ethernet Monitor. Several strategies for acquiring OC48mon interface cards are underway.
Task 4, Option 1, obligated in April 2000, continues to focus on the DNS Root Server Initiative and visualization of massive datasets. It has been expanded to include additional work on the Tomography Task, originally Task 2, and the Storage and Analysis Task, previously Task 4. Work on each element of Option 1 is scheduled for completion on or before the contract end date.
5.0 Major Accomplishments to Date
The following major accomplishments were achieved during Year 3, Quarter 3:
- CoralReef 3.4.0, a major release, occurred 19 January 2001, and included refinements and enhancements to applications, libcoral library, Perl libraries, the report generator, and libhashtab. New features include:
- pcap trace support on stdin (with name "pcap:-").
- system network interface support (with the prefix "if:").
- added support for DAG cards (ATM and PoS).
- added support for protocols: Cisco HDLC (over POS); PPP (with PFC) (RFC 1661); PPP over POS (with ACFC) (RFC 1662, 2615); PPP over ATM (RFC 2364); PPP over Ethernet (RFC 2516); Bridged IEEE 802.3/Ethernet over PPP (RFC 1638).
- processing intervals can be specified in fractions of a second on the command line and via the C and Perl APIs.
- a Coral source on standard input can be gzipped.
- error file name "-" means stdout.
- eliminated arbitrary limit on number of ATM VPVCs that can simultaneously be in AAL5 reassembly, and reduced memory use for cases where the number of VPVCs is small.
- added the "filter" coral command, to set a pcap filter on any "crl_*" application that operates on packets.
- can be told to search anywhere for extra libraries and include files during installation.
- CoralReef 3.4.1 was released 15 February 2001. This release:
- fixed loss of final partial block when duration expires.
- added -s (short format) option to crl_print_pkt.
- fixed -Tm option of crl_flow and crl_rsdos: was flooring expiry time and incorrectly setting gap on interval boundaries.
- added packet, block, and short options to crl_info.
- fixed early stop when reading multiple tracefile interfaces (introduced in version 3.4.0)
- CoralReef 3.4.2 was released 14 March 2001. This release:
- added documentation for Tables and other Perl APIs.
- fixed error in t2_report
- fixed bug caused by writing a binary file from a Perl-only Length_Table and reading it with a C-backend Length_Table
- added cell option to crl_info
- added coral_proto_rule().
- "deny" configuration rule now works in cell API, and applications crl_cut, crl_fail, crl_info, crl_print, crl_rate_layer2, crl_time.
- fixed bug in crl_flow where subinterface meta-data was wrong when active flows existed.
- added reset() member function to FlowCounter to return to original state.
- fixed bug in Tables where clear() didn't reset the total counter.
- workaround for g++ library error on FreeBSD 4.1
- One new skitter monitor "M-root" was deployed in Tokyo, Japan ( the "M" DNS root server location) during this quarter. In addition, "skitter.kaist.kr.apan.net" is now back on-line after coordinating configuration with the skitter administrator in Taejon, Korea. This brings the number of skitter monitors collecting data to a total of 24.
- RSSAC is to release an MOU including skitter as a neutral methodology for determining who should have most efficient location of root nameservers.
- Several negotiations are in progress to acquire OC48 and gigEther cards because the Waikato DAG hardware is taking so long:
- We tested four prototype OC48mon boards on live network traffic at CAIDA/SDSC. The cards were also tested at Sprint Labs. Data was successfully collected. A CoralReef OC48 Mon was also tested at Abovenet in January , continuing CAIDA efforts to test monitor hardware and software under real network conditions.
- Narus visited CAIDA 7 February 2001 to install one of their monitoring boxes. CAIDA is testing CoralReef on this box, which uses Lucent OC48 cards with Narus special purpose device drivers.
- CAIDA opened dialogue with Lucent to beta-test oc48 capture cards that they are developing.
- Six papers by CAIDA researchers were accepted for presentation at the PAM 2001 conference, April 23-24, Amsterdam:
- Bradley Huffaker, Marina Fomenkov, David Moore and kc claffy, "Macroscopic analyses of the infrastructure: measurement and visualization of Internet connectivity and performance" The robustness and reliability of the Internet is highly dependent on efficient, stable connectivity and routing among networks comprising its global infrastructure. CAIDA uses the skitter tool to dynamically discover and depict global Internet topology and measure performance across specific paths. This paper discusses implementation of techniques as part of a systematic approach for visualizing the multi-dimensional parameter space covered by skitter measurements. Daily snapshots are developed from available data.
- Nevil Brownlee, KC Claffy, Margaret Murray and Evi Nemeth, "Methodology for Passive Analysis of a University Internet Link" Two case studies are presented that use publicly available link monitoring tools (CoralReef and NeTraMet) for collecting and analyzing Internet flow data.
- Colleen Shannon, David Moore and k claffy, "Characteristics of fragmented IP traffic on Internet links" Fragmented IP traffic is a unique and not well-studied component of the overall mix of traffic on the Internet. We analyze characteristics of fragmented traffic, and examine causes of fragmentation. The effects of NSF, streaming media, networked video games, and tunneled traffic are quantified, as well as the prevalence of machines whose improper configurations cause traffic fragmentation. Seven multi-day traces from three sources are analyzed. These include a university commodity access link, a highly aggregated commercial exchange point, and a local NAP.
- Nevil Brownlee and Margaret Murray, "Streams, Flows and Torrents" This paper extends the RTFM (RFCs 2720-2724) definition of network traffic as bidirectional flows by adding the concepts of streams and torrents. Example analysis demonstrates useful traffic analysis based on collecting flow data for stream-based flow metrics.
- Ken Keys, David Moore, Ryan Koga, Edouard Lagache, Michael Tesch and K. Claffy, "The architecture of the CoralReef Internet Traffic monitoring software suite" The CoralReef architecture is based on a toolbox paradigm, where libcoral provides a consistent API for multiple capture cards from multiple vendors. In addition, libcoral provides a consistent interface to many packet capture file formats. This paper discusses design goals and multiple additional features.
- Margaret Murray and K.C. Claffy, "Measuring the Immeasurable: Global Internet Measurement Infrastructure" Common sense supports the establishment of a measurement infrastructure strategically designed to yield maximal Internet coverage at reasonable cost. However, while individual ISPs monitor their own infrastructure and quality of service, business and other practical concerns often prevent sharing of such information. We survey existing public and mission-specific Internet measurement infrastructures, comparing them using a variety of criteria.
- A prototype visualization using the new walrus tool appeared as "Map of the Month" on the Mappa Mundi website: http://mappa.mundi.net/maps/maps_020/ that explores a visualization of the Internet by Young Hyun of CAIDA. We are also working on a generalized framework for dealing with large graphs. We began design and implementation of library Libsea (tentative name), which provides functionality for loading, saving, examining, and to a certain extent processing large graphs. Work is progressing on a Java implementation, and we also anticipate development of implementations for C/C++ and Perl.
- CAIDA was invited to join the stats-coord mailing list created by ARIN to track IP address space consumption and announcement policy trends.
6.0 Artifacts Developed During the Past Quarter
No artifacts were developed this past quarter.
7.0 Issues
Delivery of this quarterly report was delayed due to travel schedules of the principal members and the need to resolve a small discrepancy discovered in reported hours. (Problem appears to be attributable to a simple math error.)
7.1 Open issues with no plan, as yet, for resolution
None.
7.2 Open issues with plan for resolution:
We met with Derek Wong regarding monies that were to come to CAIDA under the NGI project that was to be combined with funding from NMS project. SPAWAR representative Derek Wong is working to resolve the issue.
7.3 Issues resolved:
Starting next quarter, DARPA is funding CAIDA through two programs, NGI (Mari Maeda) and NMS (Sri Kumar). Therefore, we will be combining the reports for both projects into one quarterly report.
8.0 Near-term Plan
The material below reflects the activities planned during Year 3, Quarter 4 of this project, April 1, 2001-June 30, 2001. We have organized the information according to the categories identified in the Project Program Plan (see https://www.caida.org/funding/progplan/NGIprogplan98.xml).
A. General/Administrative Outreach and Reporting
The following Administrative Outreach and Reporting items are planned for Year 3, Quarter 4
- Submit Final Report to SPAWAR covering progress, status and management.
- Submit Final Financial Status Report (UCSD Extramural Funds Dept. submits).
- Submit Final Report of Federal Cash Transactions (UCSD Extramural Funds Dept. submits).
- kc claffy, David Moore, Nevil Brownlee, Margaret Murray, Brad Huffaker and Colleen Shannon will attend the Passive & Active Monitoring Conference (PAM2001) in Amsterdam on April 23-24 to present research results.
- kc claffy and David Moore will attend Nanog in Phoenix, AZ to present research results.
- kc claffy, Andre Broido and Nevil Brownlee will attend NRDM in Santa Barbara to present research results.
- CAIDA will host the DARPA NMS PI meeting in early April in San Diego See: https://www.caida.org/funding/nms/apr01/
- Nevil Brownlee will attend the IMG2001 conference in the SF Bay area to present research results.
B. Task 1. Coral OC48mon and GigEther Monitor
The following work is planned for Task 1 during Year 3, Quarter 4:
- Using the prototype cards deployed on OC48 links in Abovenet, The University of Waikato DAG development team (http://dag.cs.waikato.ac.nz/), (Ian Graham, David Miller, and Joerg Micheel) will test them under operational networking conditions.
- Refinement of the CoralReef software suite will continue, (https://www.caida.org/tools/measurement/coralreef/ ) especially concerning improving the CoralReef Report Generator tool https://www.caida.org/tools/measurement/coralreef/components.xml#HTML as well as optimizing interoperability with NeTraMet and Narus software.
- Discussions of OC48mon development and use with the community will continue.
- A GigEther Monitor will be developed and deployed at the SD-NAP.
- We will beta test a pair of GigEther and OC48 interface cards from Lucent to determine their applicability for high speed passive monitoring. Since the cards present a standard network interface to the OS, they work automatically with CoralReef provided that firmware can keep up with line-speed.
C. Option 1/DNS Root Server/Visualization of Massive Datasets/Tomography/Analysis
The following work is planned for Task 1 during Year 3, Quarter 4:
- 5-6 additional skitter hosts will be deployed at DNS root server locations.
- We will continue to collect and analyze data collected from skitter sources deployed in the field
- We will continue to make skitter topology and performance data available to researchers via Certificate Authority for use in their research and monitor results. See: https://www.caida.org/data/skitter/skitter_data_use.xml
- We will continue briefings to the Internet community on the purpose and results of skitter active monitoring and will solicit their feedback.
- We will continue to re-design the structure and user interface of skitter daily summaries to improve quality of access to collected data. See: http://sk-summary.caida.org/cgi-bin/main.pl
- We will make additional improvements on the Walrus viewer. See: https://www.caida.org/tools/visualization/walrus/ We will add the ability to load a more complete file format, add more filtering and other interactive processing, and add rendering labels and other attributes for nodes and links.
9.0 Completed Travel
The following travel occurred during Year 3, Quarter 3:
- kc claffy and Nevil Brownlee will attend NANOG 21 in Atlanta, Georgia, February 18-20, 2001 (http://www.nanog.org/mtg-0102/index.html)
- kc claffy and Nevil Brownlee will attend IETF 50 in Minneapolis, MN, March 18-23 (http://www.ietf.org/proceedings/01mar/index.html)
- kc claffy, Nevil Brownlee, and Andre Broido visited various Network Modeling and Simulation researchers including ACIRI, ISI, CalTech, and Berkeley to discuss format types for data needed by the NMS community.
- kc claffy, Nevil Brownlee, and Andre Broido gave talks to SF Bay area companies doing traffic engineering. (aonnetworks, speedtrak, Juniper, procket)
- kc claffy attended the DARPA LSN workshop in Washington, D.C.
- kc claffy presented an invited talk at the Philips group bandwidth conference in London.
Other related travel occurred but was not charged to this award.
10.0 Equipment Purchases and Description
CAIDA purchased and installed 8 Compaq 18 gigabyte Ultra-SCSI disks for the RAID array for storage of skitter topology data sets.
11.0 Work Focus
Task 1. Coral OC48 Monitors/GigEther
Coral OC48 Monitor
Of the four working prototype Dag4.1 capture cards, one has been deployed for testing on an OC48 link at Abovenet (working with Brett Watson).
Another Dag board was set up in SDSC on a link between a CISCO GSR 12000 and Juniper M20 router, running in CISCO HDLC mode. Although data rates on this link are not high, it was sufficient for the purposes of debugging the firmware of the card. The system has been used at SDSC for further development.
We are testing two of the boards at Sprint ATL in Burlingame. Two boards were set up there on a POS link from a CISCO router that could take input from an Agilent OC48 router tester. Measurements on the throughput of the Dag 4.1 showed that with a 64-bit 33 MHz interface it could sustain 100 byte packets at full line rate, and 40 byte packets at 80% of full line rate. The two boards were left at Sprint for further testing and development, but will be moved to an existing CAIDA monitor upon completion of testing.
In 2001 we continue to improve the firmware, especially in the areas of packet filtering, and to make performance enhancements. This design will meet the original performance requirements for an OC48 measurement board. While the team was constructing the prototype boards, they continued to use completed Dag 4.0 and 4.1p boards to test firmware and software. The main aim in software development will be to integrate the Dag4 with CoralReef.
Although the card is able to see traffic at line rate, we have started additional firmware work in order to place timestamps on packet headers in a format that can be captured to disk. We expect to be able to take a trace off of a live network to disk in the next quarter.
The Dag4.1 has the following characteristics:
- OC48 SMF optical interface.
- ATM and POS traffic capture
- Conditioned clock with GPS time pulse input for cell/packet timestamping
- 1 Mbyte cell/packet FIFO
- Separate FPGA for cell/packet processing, with 2 Mbytes SSRAM
- 64-bit 66 MHz PCI interface, standard PCI board form factor
- StrongARM 233 MHz processor with 2 Mbytes SSRAM
- LINUX device driver and applications software.
Coral Gigabit Ethernet
We initiated conversations with Lucent Technologies to beta-test Gigabit Ethernet and OC48 cards that they are developing as standard network interfaces. We will be using these cards to develop passive network monitors. The beta program is expected to start in April.
We are also working with Narus to test their OC48 and Gigabit Ethernet capture hardware. In February, two engineers from Narus visited San Diego and installed two capture boxes (one OC48 and one Gigabit Ethernet).
CoralReef
We released versions 3.4.0-3.4.3 of the CoralReef software package to CAIDA members and the public. CoralReef is a comprehensive software package from CAIDA for passive monitoring of ATM, POS, and other network interfaces and reading "crl" and pcap tracefiles. It includes FreeBSD drivers for Apptel POINT (OC12 and OC3 ATM) and FORE FATM (OC3 ATM) cards, support for WAND DAG (OC3 and OC12, POS and ATM) cards, programming APIs for C and perl, and software applications for capture, analysis, and reporting of ATM, IP, and TCP/UDP traffic.
For additional updates and fixes, see https://www.caida.org/tools/measurement/coralreef/doc/doc/CHANGELOG.
A paper entitled The architecture of the CoralReef Internet Traffic monitoring software suite was accepted at PAM2001 and will be presented in April.
![[Gnutella and Napster Traffic Load]](pics/ts_app_bytes_2160.gif)
In Figure 1, we can see a slow increase in the number of bytes transferred using the Gnutella protocol, as compared to Napster. Not surprisingly, this increase is correlated with Napster's decision on March 2nd to start filtering the files they made available. While there's no obvious decrease in Napster use, one could expect that an increase in effective filtering on the part of Napster would cause users to move to non-filtered systems (like Gnutella).
And for the future:
In order to facilitate increased understanding of network use (and misuse), we are planning to increase the tools available for analysis of passively collected data. Part of this is possible by aggregating traffic data into small (but still informative) tables of information and archiving them. This will be achieved with an API for data aggregation (called simply Tables at this point), which helps facilitate both the automated storage of useful data, as well as providing a simple way for researchers to later access that data in myriad ways. This API was originally written in Perl, and though a C++ backend exists, it is currently limited in terms of flexibility and future growth. By rewriting this API using templates and algorithms and containers from the C++ Standard Library, it should be easier for programmers to extend and manipulate to serve their specific analysis needs.
Option 1. DNS Root Server/Visualization of Massive Datasets/Tomography/Analysis
In support of ICANN/RSSAC, CAIDA has co-located skitter monitors near several of the root servers and carries out macroscopic measurements of the root system on behalf of the RSSAC. We analyze these data in pursuit of answers to two questions:
- Are the current root server locations optimal or is there unnecessary redundancy that can be eliminated?
- Where should ICANN place additional root name servers?
We have developed a methodology for identifying and depicting sets of destinations with high latency from all instrumented root locations, and demonstrated the utility of this methodology if applied at all current and potential future root server locations.
We analyzed 30 days of data collected in December 2000 on the six skitter monitors co-located with the root servers. All monitors probed a common list of more than 58,000 destinations that were gathered statically at each root server and combined in a single list. We found that 974 destinations from this list have had high latencies (above the 90th percentile of RTTs)on at least 24 days during the 30-day period of our measurements. These destinations are associated with 282 origin ASes and belong to 105 different countries (out of 7882 origin ASes and 184 countries represented in the target list).
|
a) |
b) |
|
|
|
|
![[High Latency Destinations]](pics/hld.dec.png)
![[DNS Clients by Country]](pics/dnscl.png)
Comparing Figures 2a and 2b we see that Africa, Asia, and South America account for over 60% of the high latency destinations, but less than 14% of the total client list. The exact numbers are: 16.7% versus 0.9% for Africa, 28.1% versus 9.8% for Asia, and 17.0% versus 3.3% for South America.
We plan to start monitoring additional root name servers in order to verify that incompleteness of our data does not skew the results. In particular, in January 2001 we began collecting the data from the M root server in Tokyo. It is possible that including this data in our future analysis will decrease the proportion of high latency destinations in Asia.
Table 1 is a list of all of the servers that CAIDA maintains and uses to collect research data. http://sk-status.caida.org/cgi-bin/main.pl?mode=status Note: There have been recurring connectivity problems with L-root. Also, in the next quarter we will deploy 3 new skitter boxes and 2 more DNS root monitors.
|
hostname(ip) |
st |
org |
loc |
list |
|||||
|
l-root.skitter.caida.org |
A |
ISI |
Marina del Ray, CA, US | ||||||
|
e-root.skitter.caida.org |
A |
NASA |
Ames Moffet Field, CA, US | ||||||
|
k-peer.skitter.caida.org |
A |
RIPE |
Amsterdam, NL | ||||||
|
k-root.skitter.caida.org |
A |
RIPE |
London, UK | ||||||
|
f-root.skitter.caida.org |
A |
VIX |
Palo Alto, CA, US | ||||||
|
a-root.skitter.caida.org |
A |
Verisign |
Herndon, VA, US | ||||||
|
m-root.skitter.caida.org |
A |
Wide |
Tokyo, Japan | ||||||
|
sin.skitter.caida.org |
D |
SingAREN |
Singapore, SG | ||||||
|
iad.skitter.caida.org |
D |
ABOVE.NET |
Washington DC, US | ||||||
|
lhr.skitter.caida.org |
A |
ABOVE.NET |
London, UK | ||||||
|
nrt.skitter.caida.org |
A |
ABOVE.NET |
Tokyo, JP | ||||||
|
sjc.skitter.caida.org |
A |
ABOVE.NET |
San Jose, CA, US | ||||||
|
apan-jp.skitter.caida.org |
A |
APAN |
Tokyo, JP | ||||||
|
skitter.kaist.kr.apan.net |
D |
APAN |
Taejon, KR | ||||||
|
galahad.caida.org |
D |
CAIDA |
Ann Arbor, MI, US | ||||||
|
yto.skitter.caida.org |
A |
CANET |
Ottowa, CA | ||||||
|
chenin.caida.org |
D |
NCAR |
Boulder, CO, US | ||||||
|
nyc-engr-01.inet.qwest.net |
D |
Qwest |
San Jose, CA, US | ||||||
|
sjo-engr-01.inet.qwest.net |
D |
Qwest |
San Jose, CA, US | ||||||
|
riesling-ether.caida.org |
A |
SDSC |
San Diego, CA, US | ||||||
|
skitter.uoregon.edu |
A |
University of Oregon |
Eugene, Oregon, USA | ||||||
|
waikato.skitter.caida.org |
A |
University of Waikato |
Hamilton, NZ | ||||||
|
champagne.caida.org |
A |
VBNS |
Urbana/Champaign, IL,US | ||||||
|
mw.skitter.caida.org |
A |
Worldcom |
MAE-west San Jose, CA, US | ||||||
The DNS prefix list, which now has 58,265 destinations, has been running on six root server monitors since November 2000. Our goal with this list is to merge destinations seen at the DNS servers and select a single IP within each network prefix. Currently, we have IP lists taken from packet traces at A, F, K, and L, and M roots. All of these client lists except for L include the number of requests made by each IP source address. We used a BGP table from David Meyer's University of Oregon Route Views project taken Aug. 8th 2000 to map IP addresses to prefixes. This table contained a total of 87,408 prefixes. We were able to cover 46,844 prefixes by using the IP addresses in this list. In an attempt to cover the remaining 40,564 prefixes in the core tables, we augmented the original list with our own prefix list. We were able to incorporate an additional 9,463 prefixes that resulted in the DNS list containing a total of 56,307 IP addresses. (64.4% prefix coverage)
Visualization of Massive Datasets
We generated a new AS connectivity graph in January 2001. See:
https://www.caida.org/research/topology/as_core_network/
We now have an animated version of the AS Internet Graph made from data collected over the course of a year. Additionally, several new AS Internet graph visualizations have been incorporated into the skitter daily summaries. Users are able to get a view of this visualization from any of the skitter monitors on any given day on which data has been collected. The skitter daily summaries also have a new user interface which makes it more convenient to search for the specific, desired datasets.
Graph Visualization Library
We have finished coding the parts in ImmutableGraph having to do with attributes except where it involves the not yet implemented expression language. Therefore, with the exception of the expression language, all parts having to do with nodes, links, paths, and attributes are done. Plans for testing all these features are underway.
Analysis
- https://www.caida.org/~rkoga/test_ryan/0/ts_top_n_app_bytes.html
- https://www.caida.org/~john/otter_shots/old/all_iad.png
Significant Events
- CAIDA met with new SPAWAR representative, Derek Wong, to discuss the funding classification of NMS as a grant as opposed to a contract.
- CAIDA hired Nevil Brownlee 20 February 2001 as a 50% time Programmer/Analyst IV.
Publications:
The following papers were submitted:
- Andre Broido,kc claffy "Analysis of BGP RouteViews: Policy Atoms " to https://www.caida.org/publications/papers/2001/NdrmBgp/
- David Moore, Geoffrey M. Voelker, and Stefan Savage "Inferring Internet Denial-of- Service Activity" to USENIX Security Symposium August 13-17, 2001, Washington,D.C. See: https://www.caida.org/publications/papers/2001/BackScatter/
The following papers were published:
- Marina Fomenkov, kc claffy, Bradley Huffaker and David Moore "Macroscopic Internet Topology and Performance Measurements from the DNS Root Name Servers" International Teletraffic Congress BRST 2001.
- Nevil Brownlee, Chris Loosley "Fundamentals of Internet Measurement: A Tutorial" Computer Measurement Group Journal.
- kc claffy "Visualizing the Internet: A Co-operative Endeavor" Computer Measurement Group Journal.
An article on Walrus was published in Map of the Month for March (Mappa Mundi) at http://mappa.mundi.net/maps/maps_020/.
The AS Core image has been licensed for use in a variety of print publications:
- InterAct CENIC
- Physiches Blatter
- French magazine, Futur(e)s
- German Magazine GeoWissen
A new Metrics FAQ was posted on the CAIDA website: https://www.caida.org/outreach/metricswg/faq.xml
FINANCIAL INFORMATION:
Contract #: N66001-98-2-8922
Contract Period of Performance: 16 Jul 1998 to 15 Jul 2001
Ceiling Value: $6,655,449
Current Obligated Funds: $2,971,812
Reporting Period: 1 Jan 2001 to 31 Mar 2001
Actual Costs Incurred: $2,283,511
Current Period:
| UCSD | ||
| Labor Hours: | 3399 | $ 127,071 |
| ODC's: | $ 30,887 | |
| (includes Waikato Hours: | 32 | $ 18,333 |
| IDC's: | $ 64,379 | |
| TOTAL: | 3431 Hours | $ 222,337 |
Cumulative to date:
| Labor Hours: | 30,956 | $1,043,599 |
| ODC's: | $650,470 | |
| (includes Waikato Charges: | $247,844 | |
| IDC's: | $589,442 | |
| TOTAL: | $2,283,511 |
Note: additional financial information in tabular form, including breakdown by subcontract and estimated expenditures for Quarter 11, is attached to report.