10-28-2009 02:15 AM - edited 03-04-2019 06:31 AM
Dear all
I have some branch offices, they user voip and video conference and also some application.
the problem is video conference need bandwidth but it does not user very day?
how can I garantee bandwidth why its on demand and when the video conference is not in use the bandwidth allocate for other applications
thank you
10-28-2009 04:01 AM
On the high level, you need to work w/ your MPLS carrier to make sure you have a suitable QoS policy in the provider cloud, and configure your QoS policy accordingly w/ various priority & bandwidth commands.
Read through the IOS 12.4 QoS config guide:
http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/12_4/qos_12_4_book.html
The design guide should also help:
http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS-SRND-Book.html
10-28-2009 04:23 AM
Much QoS is based on the premise that a class or type of traffic is guaranteed a certain amount of bandwidth but often when any of that bandwidth isn't being used it can be used by other traffic.
For example a CBWFQ such as:
policy-map aSample
class VoIP
priority percent 10
class VidConf
priorty percent 20
would guarantee VoIP 10% of interface bandwidth, VidConf 20% of interface bandwidth and guarantee 70% for all other traffic but if VoIP was only actually using 5% and VidConf wasn't active, other traffic could use 95% of the interface's bandwidth. If VidConf became active and used 15% while VoIP was still using just 5%, then other traffic could use as much as 80%, and so on.
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