Is ther support to add latency and jitter on the router

[anaveen222]

Is ther support to add latency and jitter on the router
We might need this to change the inter arrival time .
And p.s working for viasat

[parkeraddison]

Latency is supported and configurable via the .conditions[].latency field in the config file. Jitter isn't a configurable option yet.

However, you can get jitter by adding a value to the netem delay command in scripts/router/network-setup.sh. If you'd like to add 10ms of jitter you could edit the file like so:

dane/scripts/router/network-setup.sh

Line 58 in 95b1703

tc qdisc add dev "$iface_ext" root netem delay "$to_inject$latency_unit"

becomes

tc qdisc add dev "$iface_ext" root netem delay "$to_inject$latency_unit" 10ms

Here's a great reference for figuring out what other changes you can make to the delay option

• https://wiki.linuxfoundation.org/networking/netem#emulating_wide_area_network_delays

Hope this helps!

[charles-laubach]

@anaveen222 Just so you are aware, I am creating and maintaining a Viasat fork here. It moves away from tc netem so we have more control over the network emulation (it also allows us to natively support WSL2). Currently it supports two conditions: delay and deterministic loss. Where deterministic loss is tossing a packet from a connection exactly every X packets. Please reach out to me at my Viasat email address if you would like to collaborate further.