10-19-2015 08:03 AM - edited 03-17-2019 04:37 AM
Hi In a campus network, there are VoIP phone and video traffic, where should we configure the OoS? I think the Qos should be configured at the device where the traffic are considered as bottleneck, do you think so ? If so, usually it is at edge router, right ? Thank you
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10-19-2015 08:47 AM
LLQ is set on WAN links, which is the biggest bottleneck on any network, however before even getting there switching infrastructure needs to be properly setup for QoS with marking/classification and queueing. Different switches have different QoS/queue capabilities and one needs to understand entire network (models of switches, supervisors, etc) to design compatible QoS structure end to end.
10-19-2015 08:14 AM
QoS should be configured End to End, you should mark as close as possible to source (switch port) and queue and prioritize throughout the network.
Check out Cisco's medianet QoS SRND:
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.html
10-19-2015 08:40 AM
Thank you so much for your reply. So we mark traffic as close as source, but we should set LLQ etc in bottleneck device, right ?
10-19-2015 08:47 AM
LLQ is set on WAN links, which is the biggest bottleneck on any network, however before even getting there switching infrastructure needs to be properly setup for QoS with marking/classification and queueing. Different switches have different QoS/queue capabilities and one needs to understand entire network (models of switches, supervisors, etc) to design compatible QoS structure end to end.
10-19-2015 11:33 AM
Thank you! very good explanation.
10-19-2015 11:36 AM
You're welcome and good luck.
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