Topology Tools Taxonomy

This section concerns tools for visualizing and analyzing Internet topology. A summary is provided along with web page pointers to more detailed information. Review comments are also included when available.

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BGP

Tool	Input	Measurement		Output
		Active / Passive	Functions
Jaspvi	BGP4(ipv4) and BGP4+ (ipv6) routing table	passive	shows BGP routing topology	Graph of BGP connections displayed on Java Applet.
GASP	IP address, local route server and routing table dumps	active	logical BGP routing topology with geographic and expected latency details, AS path from multiple networks to a selected target network.	realtime generated webpage
Route Explorer	passive, listen only BGP peering	passive	BGP RIB visualization, full BGP event history, before and after RIB comparison, Event stream root cause analysis in tabular and animation	GUI
SP Guru Network Planner	RMON probes, packet traces, direct capture, configuration files, network management data, SNMP	passive	future traffic projection and right sizing of links and tunnels to meet service level objectives; automated off-line MPLS traffic engineering; network survivability analysis; validation of the impact of configuration changes; evaluation of "what-if" scenarios in a virtual network environment; multi-layer analysis and planning for IP/MPLS over DWDM networks; automated IPv6 readiness assessment	GUI, graphs, charts, web reports

Macroscopic Views

Tool	Input	Measurement		Output
		Active / Passive	Functions
ally	pairs of IP addresses that might represent interfaces on the same router	active	discovers which IP addresses belong to interfaces on the same router	text
iffinder	list of interface addresses	active	discovers which IP addresses belong to interfaces on the same router	text
Route Explorer	passive, listen only BGP, OSPF, IS-IS, EIGRP, RFC 2547 BGP extended communities	passive	BGP RIB visualization, full BGP event history, before and after RIB comparison, Event stream root cause analysis in tabular and animation	GUI
scamper	monitor traces	active	logical, geographical, semi-geographical topology	various
SP Guru Network Planner	RMON probes, packet traces, direct capture, configuration files, network management data, SNMP	passive	future traffic projection and right sizing of links and tunnels to meet service level objectives; automated off-line MPLS traffic engineering; network survivability analysis; validation of the impact of configuration changes; evaluation of "what-if" scenarios in a virtual network environment; multi-layer analysis and planning for IP/MPLS over DWDM networks; automated IPv6 readiness assessment	GUI, graphs, charts, web reports

Microscopic Views

Tool	Input	Measurement		Output
		Active / Passive	Functions
otter	set of nodes, links, or paths	passive	various	various