Network Delay Simulator

nsim cross-connect enable-disable

Summary/usage

nsim cross-connect enable-disable <interface-name-1> <interface-name-2> [disable].

Description

Enable or disable network simulation cross-connect on two interfaces The network simulator must have already been configured, see the "nsim_configure" command.

Place the interfaces into a bridge group, to ensure that interfaces are in promiscuous mode.

Example usage

To enable or disable network simulation cross-connect

nsim cross-connect enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0
nsim cross-connect enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0 disable

vpp# nsim enable-disable <intfc> <intfc> [disable]

Declaration and implementation

Declaration: nsim_enable_disable_command (src/plugins/nsim/nsim.c line 337)

Implementation: nsim_cross_connect_enable_disable_command_fn.

nsim output-feature enable-disable

Summary/usage

nsim output-feature enable-disable <interface-name> [disable].

Description

Enable or disable network simulation output feature on an interface The network simulator must have already been configured, see the "nsim_configure" command.

Example usage

To enable or disable network simulation output feature

nsim output-feature enable-disable TenGigabitEthernet2/0/0
nsim output-feature enable-disable TenGigabitEthernet2/0/0 disable

vpp# nsim output-feature enable-disable <intfc> [disable]

Declaration and implementation

Declaration: nsim_output_feature_enable_disable_command (src/plugins/nsim/nsim.c line 526)

Implementation: nsim_output_feature_enable_disable_command_fn.

set nsim

Summary/usage

set nsim delay <time> bandwidth <bps> packet-size <nbytes>
[packets-per-drop <nn>][drop-fraction <f64: 0.0 - 1.0>].

Description

Configure the network simulation cross-connect Once the simulator is configured, use the "nsim enable-disable" command to set up a cross-connect with the supplied delay characteristics.

The cross connect configuration may be changed without restarting vpp but it is good practice to shut down the interfaces.

Example usage

To configure the network delay simulator:

set nsim delay 10.0 ms bandwidth 5.5 gbit packet-size 128

vpp# set nsim delay <nn> bandwidth <bb> packet-size <nn>

Declaration and implementation

Declaration: set_nsim_command (src/plugins/nsim/nsim.c line 760)

Implementation: set_nsim_command_fn.

show nsim

Summary/usage

Display network delay simulator configuration.

Description

Display state info for the network delay simulator.

Example usage
To display the state of the network simulator
show nsim verbose
Network simulator cross-connects TenGigabitEthernet2/0/0 and TenGigabitEthernet2/0/1
...inserting link delay of 10.00 ms, 20.00 ms round-trip
 Configured bandwidth: 10.10 gbit/sec
 Configured packet size: 128
 Sim uses 157814784 bytes total
 
vpp# show nsim

Declaration and implementation

Declaration: show_nsim_command (src/plugins/nsim/nsim.c line 805)

Implementation: show_nsim_command_fn.