Hi Fabina,
The better topic to append, is 354.4 Network High Availability.
Below explanation.
>e.x: answers/knowledge qdisc (queueing discipline), class (shaper
enumerate) ,filter (filter ip/network/port to class created).
e.x
"tc qdisc del dev ens256 root *(queueing discipline)*
tc qdisc add dev ens256 root handle 1: htb default 12 *(queueing
discipline classfull)*
tc class add dev ens256 parent 1: classid 1:12 htb rate 5mbit ceil 7mbit
*(shaper enumerate)*
tc class add dev ens256 parent 1: classid 1:20 htb rate 80mbit ceil
85mbit *(shaper enumerate)*
tc class add dev ens256 parent 1: classid 1:21 htb rate 20mbit ceil
30mbit *(shaper enumerate)*
tc filter add dev ens256 protocol ip parent 1:0 prio 1 u32 match ip dst
10.200.225.3/32 flowid 1:20 *(destination filter ip/network/port to
class created)*
tc filter add dev ens256 protocol ip parent 1:0 prio 1 u32 match ip src
10.200.225.3/32 flowid 1:21 *(source filter ip/network/port to class
created)."*
>answers/knowledge discipline classless:
PFIFO (Packet First In First Out)
PFIFO Fast (Packet First In First Out Fast - default no Kernel Linux)
RED (Random Early Detection)
SFQ (Stochastic Fair Queuing)
TBF (Token Bucket Filter)
>answers/knowledge discipline classfull:
CBQ (Class Based Queueing)
HTB (Hierarchy Token Bucket) - recommended
PRIO (Priority class)"
With "tc filter", don't need integrate with iptables.
Thanks.
On 01/04/2019 07:42, Fabian Thorns wrote:
Hi Alex,
On Fri, Mar 22, 2019 at 2:14 PM [email protected]
<mailto:[email protected]> <[email protected]
<mailto:[email protected]>> wrote:
* Shall we keep 'Implement bandwidth usage monitoring' in 334.2? I was
tempted to drop it since it is complicated, at the edge of the
topic and we
don't cover traffic shaping anyway.
> Perhaps implement/append control traffic with tc (tc - show /
manipulate traffic control settings)?
We could consider this topic, but maybe it would be better off in the
new 305 exam as bandwidth congestion is more an availability issue as
a security breach. One might argue about this perspective, though.
What do you think about adding it to 354.1 or 354.4; and would you go
into the details or just test awareness of tc? It is a complex topic,
so it might justify at leas one weightpoint which we have to steal
from another topic. Any other thoughts, comments, objections on this one?
Fabian
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