CCNP TSHOOT 6.0 - Cisco Learning Home

CCNPv6 TSHOOT
20 *******
10 ********
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%
As with the output for the show processes cpu sorted command, you can see that R3 is not CPU
bound.
d. Issue the show memory statistics command on R3. Note the amount of used and free memory
for the processor. By comparing the amount of memory used to the baseline and the TT issues, you
can determine how much is used when running the TTCP utility. The memory amounts for the
baseline after the TT was loaded and while TTCP was running are shown here for comparison.
Note: The trouble ticket issues cause an increase of nearly 70 KB of memory over the baseline. This
is not enough to cause real memory depletion issues with the router but serves to illustrate the type of
problem that can occur in a production environment. Running the TTCP load utility caused an
increase of about 7 KB over the TT issues.
Baseline
R3#show memory statistics
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 64E822C0 101178688 24016328 77162360 75584536 75588172
I/O EAF00000 17825792 5421744 12404048 12363136 1238780
After TT Issues Are Introduced
R3#show memory statistics
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 64E822C0 101178688 24085092 77093596 75584536 75579176
I/O EAF00000 17825792 5421744 12404048 12363136 1238780
While Running TTCP
R3#show memory statistics
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 64E822C0 101178688 24092388 77086300 75584536 75579176
I/O EAF00000 17825792 5424292 12401500 12363136 1238780
Step 6: Outline the troubleshooting approach and validation steps.
The following approach is recommended as a troubleshooting process:
1. Generate test traffic using the ping and ttcp commands, as described in this task.
2. Use ping to measure the performance between the headquarters and Internet or network servers.
For example, ping from client PC-B to server SRV1, R1 or R2.
3. Examine the key performance indicators, such as the interfaces, CPU, and memory, on the routers
and watch for symptoms associated with performance problems.
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