Questions tagged [qos]
QoS (Quality of Service) is the idea that transmission rates, error rates, and other characteristics can be measured, improved, and, to some extent, guaranteed in advance.
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How to mark 802.1Q ethernet frame with PCP bits according to encapsulated IP header IP Precedence bits
I would like the IP header IP Precedence bits to be copied into 802.1Q PCP bits for outgoing traffic sourced from the host in question. Specifically for iperf3 and ping utilities.
I have failed to set ...
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QoS on Linux: tc doesn't see RTP traffic
I have a camera that creates RTSP traffic. I connected it to a Linux PC via Ethernet, configured the network and access. But when I tried to apply QoS rules, the tc statistics showed that too few ...
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router command to change bandwidth limit for a MAC address
I use DD-WRT to limit WAN bandwidth to one MAC address using DD-WRT's web interface.
The key entry in the web interface (in "NAT/QoS" tab's "QOS" tab) is "MAC priority",
...
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What do the following messages in dmesg mean?
These following two lines were in my dmesg:
[xx] wlan0: AP has invalid WMM params (AIFSN=0 for ACI 0), will use 2
[xx] wlan0: AP has invalid WMM params (missing AC 0), using defaults
Another one:
[xx]...
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wondershaper on two interfaces
I'm running Debian as a home router and server with DLNA, samba, and netatalk.
I've set up wondershaper for the external interface (not the outdated debian package but obtained and built from https://...
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ESFQ is not control the upload
I am using IMQ and Iptables to control the packages outcome from my LAN using ESFQ, but it is not work at all.
How I can control the upload of my LAN, I know that others systems like Mikrotik, has its ...
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egress traffic shaping rules on mirrored interface aren't working
In my small, private, network I have a device (IP address 192.168.0.240) which I want to have a "guaranteed" section of the pipe. To that end, I've been following this Server Fault article to shape ...
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Example command to set same DSCP value in the IP header for return packets within the same TCP connection
I have seen connmark or ctinfo could work for this but couldn't find a simple effective command to make it work (Not familiar within this area).
The command can be applied to the TCP termination node ...
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tc: route all traffic from default gateway to ifb0
Traffic from eth0 arriving from gateway should be sent to ifb0 for ingress shaphing.
Here some relevant outputs and commands
ip route
default via 192.168.0.1 dev eth0 metric 200 realm 1
What ...
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How to prioritize traffic using bridge and qdisc?
I'm trying to prioritize traffic over the Linux-based software bridge in my network. When I generate traffic locally (on the machine hosting the bridge), the traffic is correctly prioritized.
However, ...
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iptables marks are being ignored by tc?
I'm getting crazy with this one:
tc qdisc add dev $WANCARD root handle 1: htb default 1
tc class add dev $WANCARD parent 1: classid 1:1 htb rate $SPEED burst 6k prio 1
tc class add dev $WANCARD ...
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How to limit download bandwidth per IP?
We are running Ookla Speedtest server and want to limit download bandwidth per IP (350Mbit/s per IP). And I cannot find some examples how to do that. All the examples with tc are about how to limit ...
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shorewall - VoIP - jitter buffer
I am using shorewall as my firewall and traffic shaping platform; however, I'm wondering what more I can do to help mitigate upstream jitter issues. I have a fair amount of bandwidth, but the ...
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Why am I unable to prioritize TCP traffic using ToS fields?
I am trying to prioritize TCP traffic using ToS field in IP header.
I am saturating the interface(ethernet) by sending 1GB data through iperf with ToS field set to 0x10 (Minimize-Delay).
I then start ...
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TCP flows coexisting with UDP when using SFQ (stochastic fair queuing)
I am simulating a network where I limited and modified all the interfaces using TC (traffic control). My interfaces are of the form HTB --- SFQ (it is a little bit more complex but I will simplify ...
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