eth0 down... then what...

[Robert Achmann]

ok - newbie admin question...

I want to test out a cool command line command...
ifconfig eth0 down

wow! I can't connect to the internet...cool.
ok...

ifconfig eth0 up

no joy...

Q: what command can I use to determine why I no longer have an internet
conection? netstat and ifconfig just give me a lovely bunch of summary
info. What do I need to look at/do to:
1. verify that I am down
2. get the internet active again.
(NO GUI PROGRAMS - command line answers only please! - although that's
appearantly the only way to manage disk volumes & volume groups (whoah -
later discussion!) )

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Robert Achmann
Thought provoking, and very cool, philosophical statement.