I am playing with QoS and traffic policies and was hoping someone could set me straight on bandwidth usage. I know QoS reserves 25% bandwidth by default for internal process overhead, but is this actually needed for network traffic? Or just to keep the interface from being too busy?
Lab router 2514 is connected to the internet on Ethernet0 via 512 Kbps upstream cable modem. Do these 'internal processes' need the actual 128Kbps of the 512? Could I set the bandwidth of the interface to 682Kbps so it has 25% in addition to the 512Kbps of the internet connection as the interface is capable of more then 512?
Any info helps!
HI John, [Do RATE ALL HELPFUL POSTS]
In addition to Leo POST,
25% of Overall Bandwidth is reserved by QOS for Internal Route Processing Traffic like OSPF Updates / Eigrp Update / BGP Updates and other Routing Protocol Updates over WAN / LAN the QOS is implemented.
Do RATE ALL HELPFUL POSTS.
Guru Prasad R
This is something you can decide yourself and it will not be the same for all systems.
For example, it makes quite some difference whether you are using a routing protocol or not.
You can adjust the default by specifying the usable bandwidth per interface using the following interface-command:
This example allocates 96% of the bandwith for user traffic.