Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!comp.vuw.ac.nz!newbery From: newbery@rata.vuw.ac.nz (Michael Newbery) Newsgroups: comp.protocols.tcp-ip Subject: Re: 9 interesting & challenging problems for Netman Message-ID: <1990Sep26.220343.20950@comp.vuw.ac.nz> Date: 26 Sep 90 22:03:43 GMT References: <9009221327.AA25351@ucbvax.Berkeley.EDU> <70311@sgi.sgi.com> Sender: news@comp.vuw.ac.nz (News Admin) Organization: Computing Serv. Ctr, Victoria Uni., Wellington, New Zealand Lines: 26 Nntp-Posting-Host: rata.vuw.ac.nz In article <70311@sgi.sgi.com> rpw3@sgi.com (Rob Warnock) writes: >In article <9009221327.AA25351@ucbvax.Berkeley.EDU> Z.Wang@CS.UCL.AC.UK >(Zheng Wang) writes: >+--------------- >| I imagine what we need is a huge screen (as seen at some city >| traffic control centers) with all the nodes and links. Each >| connection is represented by a thin line. When traffic passes, >| it leaves a trace on the line. So the more traffic passes, the darker >| the line is.... >+--------------- > >This is exactly what SGI's new "NetVisualyzer" product does, that is, the >"netlook" program (one of the NetVisualyzer subsystems). [See it at Interop.] Yes, it's very nice (at least the video I saw was impressive---pity my TV screen isn't as high res as the Iris :-) but it requires an Iris workstation on every segment to collect data! Great for SG if they want to sell lots of Iris's but a little out of our range I'm afraid. Also, in the case of Point to Point ethernet over fibre links (router-router) it's not even theoretically possible. Now, if the product collected data from SNMP agents it would be rather more generally useful. -- Michael Newbery Levitation: Joseph of Cupertino (1603-1663) was the subject of such frequent levitation that he was forbidden by his superiors to attend choir.