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Why does congestion happen

The job of a router is to be able to receive multiple packets from multiple sources then send the packets 1 at a time in each of its outputs. No. The job of a router is to route packets between ...
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Where is priority for a particular frame set?

From the Catalyst 4000 documentation: ISL or 802.1Q frames are not classified or marked at the ingress port; the existing CoS value is honored. When an 802.1Q frame enters the switch through a ...
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Where is priority for a particular frame set?

Edited: Where is the priority level for a particular frame set? (whose code decides and in what device) Since the MAC layer does not inspect the contents of a packet, how does the MAC layer know what ...
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Cisco ASR1006 QoS on pppoe session: Police percent not supported - no bandwidth for percent calculation

What works for us (ASR 1001X) is the following concept (paraphrased config, syntax might be slightly different). The idea is to have a shaper in the parent class, so the child classes have a reference ...
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QOS operation doubt

QoS markings are typically set at the client machine or at the access switchport that the client plugs in to and every single IP packet that meets the criteria for a QoS marking get's the mark. TCP is ...
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QOS operation doubt

Does QOS marking in the IP header occur on every packet or does it need TCP segmentation established (TCP handshake)? Depending on your devices and their configurations, you need to mark each packet'...
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QOS operation doubt

Example, I have a rule configured applying priority 1 to destination port 443, in the initial syn it already marks or would wait for the connection established. I understand that no, QOS is in the IP ...
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