S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 58 Troubleshooting Your Fabric
IP Network Simulator
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Limiting maximum bandwidth
•
Finite queue size
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Dropping packets
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Reordering packets
Enabling the IP Network Simulator
Because the network simulator commands and functionality are part of the SAN Extension Tuner, you
must first enable the tuner; after doing so, you can view and use the network simulator commands in
EXEC mode.
To enable the network simulator (in this case, on a Cisco MDS 9506 director), follow these steps:
Simulating Network Delays
You can configure the network simulator to delay all packets entering the Gigabit Ethernet ports. After
configuring the delay in one direction, you need to also enter the same command to introduce the delay
in the opposite direction, if desired. You can specify the delay in either milliseconds (allowable range is
0 to150 ms) or microseconds (allowable range is 0 to 150000 µs).
Command
Purpose
Step 1
switch#
config t
switch(config)#
Enters configuration mode.
Step 2
switch(config)#
san-ext-tuner enable
Enables the SAN Extension Tuner.
Step 3
switch(config)#
exit
switch#
Exits to EXEC mode.
Step 4
switch#
ips netsim enable interface
gigabitethernet 2/3 gigabitethernet 2/4
Configures the pair of Gigabit Ethernet ports in
network simulation mode.
Note
The two ports must be adjacent to each; the
first port must be an odd-numbered port.
switch#
ips no netsim enable interface
gigabitethernet 2/3 gigabit ethernet 2/4
Disables network simulation mode and resets the
Gigabit Ethernet ports.
