Fault
processing method
One, network complexity
The general
network, dial, including video, (ISDN, WAN, frame
relay, ATM,... ), LAN, VLAN,...
Two, failure model
1, the definition of the problem (Define the Problem)
Detailed
and accurate description of fault symptoms and potential causes
2, collecting detailed information (Gather Facts) R> source of information: the key to the user, the network management system, the router / machine
1) identify symptoms:
2) to reproduce the fault: check the fault still exists
3) to investigate the failure frequency:
4) range to determine the fault: there
are three kinds of methods to
establish the scope of fault
From the
outside to inside? Treatment failure (Outside-In Troubleshooting): generally applicable to a plurality of host can not be connected to one or a set
1,from the
inside to the outside fault
treatment (Inside-Out Troubleshooting):
2,half fault treatment (Divide-by-Half Troubleshooting)
3,consider
possibilities (Consider Possibilities) to consider possible reasons causing thefailureset
up a plan of action (Create the Action Plan)
4,implement
the action plan (Implement the Action Plan)
5,Is used
to correct the cause of network fault. From the fault source, come up with treatmentfor each
completed step, check whether the
failure to solve
6, observe the action plan execution result (Observe Results)
7, if the action plan will not solve the problem, repeat the above process (Iterate as Needed)
Three, record the changes
In the plan
of action to solve the problem, the part
of the record as the fault processing,recording all the configuration changes.
The second
chapter web documents
A, network baseline
The
simplest way to solve network problems is the current configuration and the
previous configuration compared.
Baseline document consists of a network and system documents is different, it includes:
Network configuration table?
Network
topology?
The ES network configuration table?
ES network
topology?
Considerations
for creating a network:
1) to determine the scope of the document;
2) remain the same: the same information collection of all equipment in the network;
3) clear goal: to understand the use of the document;
4) documents are easy to use and access;
5) timely update the document.
