Learning by Doing: CISCO Certified Network ... - SCN Research

Scenario 3:
Hostnames Phiber Optik
S0 1.0.0.1/8 (DCE) n/a
S1 n/a 1.0.0.2/8 (DTE)
E0 2.0.0.1/8 4.0.0.1/8
E1 3.0.0.1/8 5.0.0.1/8
Workstations A-E0 B-E0
IP 2.0.0.2/8 4.0.0.2/8
SM 255.0.0.0 255.0.0.0
GW 2.0.0.1/8 4.0.0.1/8
Workstations A-E1 B-E1
IP 3.0.0.1/8 5.0.0.2/8
SM 255.0.0.0 255.255.255.0
GW 3.0.0.1/8 5.0.0.1/8
Use this for a lab design:
So What Did I Learn Here?
In this lab you learned about a geek-speak term “summarization.” Think back to the
subnetting lab…network.network.host.host for a class B address. Between the network
and host is the “classful boundary” which is where a router will summarize an address if
it uses a protocol like RIP that does not pass subnet mask information. In the next lab we
start introducing more routers into our network. It’s about time, right?
Guest Router Name Derivation
Phiber Optik was the leader of the Master’s of Deception (MoD) hackers ring in New
York City in the 1980’s/early 1990’s. Allegedly he master-minded the Martin Luther
King day crash of AT&T’s national phone service in 1990. Known for his daring actions
and media stunts he appeared or was interviewed in many publications including
Harper’s, Esquire, and the New York Times. Don’t worry…he got busted. Turk 182!
215