Slide 1: visualizing the Mbone

visualizing the Mbone




Bradley Huffaker, kc claffy, Evi Nemeth
UCSD/SDSC/CAIDA
bhuffake@caida.org, evi@caida.org, kc@caida.org 
www.caida.org

Slide 2: Overview

Overview


motivation

visualization goals

feature overview

real world applications

future work

conclusion

Slide 3: motivation

motivation


map of Mbone (multicast backbone)

analyze/debug parameters


`multicast backbone':

      virtual network that can send and receive traffic 
      destined for multiple IP addresses

      one-to-many

Slide 4: visualization goals

visualization goals


data collection

storage

efficient parsing

digestable image

Slide 5: data collection tools

data collection tools


mrinfo
queries mbones nodes about:
connectivity to other nodes
known attributes of tunnels

mwatch (UCL-supported till 1998)
calls mrinfo recursively
maintained current daily mbone state 

crawl (caida tool, 1998) 
calls mrinfo recursively
good for single crawl across network
no state maintened across runs

Slide 6: data visualization

data visualization 


manta

geographical placement
method to view complete mbone trace

otter  (see today's 16:00 talk)

topological placement
better view for small parts of network

Slide 7: Manta: status (tunnel, native, down)

Manta: status  (tunnel, native, down)

Mbone infrastructure of US ISPs 

 mrinfo indications:
yellow - tunnel	 
green - native	(not tunnel)
red - down

Slide 8: Manta: metric - `routing cost'

Manta: metric - `routing cost'

Mbone infrastructure of US ISPs 

color metric: number of tunnels with that metric

Slide 9: Manta: metric - `routing cost'

Manta: metric - `routing cost' 

Mbone infrastructure of US ISPs (tunnels with metric > 1 )

color metric: number of tunnels with that metric

Slide 10: Manta: threshold (topology scoping)

Manta: threshold (topology scoping) 

Mbone infrastructure of US ISPs

Slide 11: Manta: threshold (topology scoping)

Manta: threshold (topology scoping) 

Mbone infrastructure of US ISPs

Slide 12: Manta: by ISP

Manta: by ISP

Mbone infrastructure of US ISPs

Slide 13: Manta: firewall blocking topology

Manta: firewall blocking topology


Otter: MCI outside (May 12) vs inside (July 26) firewall

Slide 14: Conclusion & Futures

Conclusion & Futures


Mbone visualizations 

geographic display
analyze based on Mbone semantics
metric
threshold
degree

Still want to enhance with

gather more geographic data
support for live data feed
integration with other mbone diagnostic tools

Slide 15: Availability

Availability



http://www.caida.org/Tools/Manta

Java-based
interested in feedback/contributions



Bradley Huffaker 
bradley@caida.org 

k claffy
kc@caida.org