Network Delay Simulator

nsim cross-connect enable-disable

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

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.

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

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

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

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

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

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

Implementation: nsim_output_feature_enable_disable_command_fn

set nsim

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

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.

To configure the network delay simulator:

set nsim delay 10.0 ms bandwidth 5.5 gbit packet-size 128
set nsim delay <nn> bandwidth <bb> packet-size <nn>

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

Implementation: set_nsim_command_fn

show nsim

Display network delay simulator configuration

Display state info for the network delay simulator.

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
show nsim

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

Implementation: show_nsim_command_fn