Differentiated services
20
MENTIONS
9
EPISODES
9
PODCASTS
Search complete. 20 mentions across 9 episodes found for "Differentiated services".
Oct 29, 2026
Network ChuckHOST
Actually, this is fine.
Network ChuckHOST
So for voice, I want to match this up to DSCP EF, which is differentiated services control protocol, right? I think, yeah.
Network ChuckHOST
And then EF is expedited forwarding.
Network ChuckHOST
Essentially, this is labeling the voice as super special and precious.
7 MINS LATER
Network ChuckHOST
And I'm going to match off EF, expedited forwarding.
Network ChuckHOST
Now, just in case you're wondering, any packet that's not QoSed or not marked special doesn't have the Six Flags FastPass.
Network ChuckHOST
It will be matched with a DSCP zero because they are nothing.
Network ChuckHOST
They are what's considered best effort, which is how most traffic will be sent.
MayaHOST
We can mark frames at layer 2 using the 3-bit class of service field inside the 802.1q header, giving us 8 priority values.
BenHOST
Or, at Layer 3, we inspect the Differentiated Services Code Point, or DSCP, field within the IPv4 type of service byte.
BenHOST
That gives us six bits of granular tagging that survive router hops across the enterprise.
MayaHOST
Once traffic is marked, the outbound interface uses queuing algorithms like low-latency queuing to prioritize delay-sensitive voice packets ahead of bulk file downloads during periods of congestion.
David McDowellHOST
Energy efficient Ethernet has to be disabled on those ports because the power saving behavior wrecks the clock sync.
David McDowellHOST
Now hold that next to your BAS network, where a BACnet over IP controller might be pushing a few kilobits per second, and nobody has ever thought about DSCP markings in their life.
David McDowellHOST
These two workloads do not belong on the same VLAN.
David McDowellHOST
You'll definitely want to segment them.
Ethan BanksHOST
In QoS, similar.
Ethan BanksHOST
I need traffic going from here to here to have this DSCP value.
Ethan BanksHOST
You can have the router assigned a DSCP value, which typically that you wouldn't actually want to do that in a QoS policy, but you might have reasons where you have to.
Ethan BanksHOST
Usually you want it to be marked as it enters your network and you don't mark it yourself.
Ethan BanksHOST
But that's a thing that you could do.
Ethan BanksHOST
Those are attack services, and you can use control plane policing, uh, with an access list that says what kind of traffic, uh, going to the control plane policer needs to be governed, and, uh, and then, uh, apply control plane policing policy to that traffic that's been identified in the ACL, and QOS similar.
Ethan BanksHOST
I need traffic going from here to here to have this DSCP value.
Ethan BanksHOST
You can as- You can have the router assign a DSCP value, which typically that you wouldn't actually want to do that in a QOS policy, but you might have reasons where you have to.
Ethan BanksHOST
Uh, usually you want it to be marked as it enters your network and you not mark it yourself, but, but that, that's a thing that you could do.
Ethan BanksHOST
Uh, one more, uh, thing here, uh, route advertisements is, uh, a place where you, you will see access list used sometimes.
David McDowellHOST
Energy efficient Ethernet has to be disabled on those ports because the power saving behavior wrecks the clock sync.
David McDowellHOST
Now hold that next to your BAS network, where a BACnet over IP controller might be pushing a few kilobits per second, and nobody has ever thought about DSCP markings in their life.
David McDowellHOST
These two workloads do not belong on the same VLAN.
David McDowellHOST
You'll definitely want to segment them.
Ethan BanksHOST
Those are attack services, and you can use control plane policing, uh, with an access list that says what kind of traffic, uh, going to the control plane policer needs to be governed, and, uh, and then, uh, apply control plane policing policy to that traffic that's been identified in the ACL, and QoS similar.
Ethan BanksHOST
I need traffic going from here to here to have this DSCP value.
Ethan BanksHOST
You can as- you can have the router assign a DSCP value, which typically that you wouldn't actually want to do that in a QoS policy, but you might have reasons where you have to.
Ethan BanksHOST
Uh, usually you want it to be marked as it enters your network and you not mark it yourself, but, but that, that's a thing that you could do.
Ethan BanksHOST
Uh, one more, uh, thing here, uh, route advertisements is, uh, a place where you, you will see access list used sometimes.
David McDowellHOST
Energy-efficient Ethernet has to be disabled on those ports because the power-shaving behavior wrecks the clock sync.
David McDowellHOST
Now hold that next to your BAS network, where a BACnet over IP controller might be pushing a few kilobits per second, and nobody has ever thought about DSCP markings in their life.
David McDowellHOST
These two workloads do not belong on the same VLAN.
David McDowellHOST
You'll definitely want to segment them.
Daniel NowatzkiHOST
However, additional metrics provide deeper insight into service performance.
Daniel NowatzkiHOST
including call setup success rate , call drop rate, round trip time to UC providers, RTP stream quality metrics, and QoSQ performance and DSCP validation.
Daniel NowatzkiHOST
The following table outlines these KPIs, what they measure, and when they are most relevant.
Daniel NowatzkiHOST
Latency, or end-to-end delay, measures the time taken for packets to travel from source to destination.