The ISO has defined five key functional areas.
 Fault management
 Accouting management
 Configuration and name management
 Performance management
 Security management

Cisco Netsys's function
 Initial network design
 Planning reconfiguration or redesings
 Stress-tesuting a network

"show teck-support" commands is interested in TAC

ISDN debug commands
"debug bri" - Layer1
"debug isdn q921" - Layer2
"debug isdn q931" - Layer3
"debug isdn status" - Layer1-3

A Problem-Solving Model
Define Problem
Gather Facts
Consider Possibilities
Create Action Plan
Implement Action Plan
Observe Results
(If problem sysmptoms don't stop,iterate process form Create Action Plan.)
Provlem Resolved
Document Facts

Ethernet encapsulation types are 
Common Term		Novell Term	Cisco Term
EthernetV.2		ETHERNET_‡U	arp
IEEE802.3		ETHERNET_802.2	sap
Novell 802.3raw		ETHERNET_802.3	novell-ehter
SNAP			ETHERNET_SNAP	snap


Routing process basically assesses the source and destination of traffice
given knowledge about network conditions,then identifies the best path to
user for moving the traffic to the destination out one of the router 
interfaces.

Switching is less processing intensive and has lower latency because it can
move packets,frames,or cells from buffer to buffer with simpler destination
of source and desitination of the traffice.

Network Diameter for spanning-tree is less than or equal to 7 switches.

Default Spanning-tree Timers
Max_Age Timer 			20sec
Forwarding Delay Timer		15sec
From Blocking to Forwarding	50sec