Here is a config of a frame relay link over which Voice and data will traffic.
bandwidth percent 5
bandwidth percent 5
interface Serial0/0.1 point-to-point
ip address xxx.xx.xxx.xxx
frame-relay class PVoice
frame-relay interface-dlci xx
frame-relay ip rtp header-compression
frame-relay ip rtp compression-connections 3
map-class frame-relay PVoice
frame-relay fragment 320
frame-relay cir 256000
frame-relay bc 1000
frame-relay be 0
frame-relay mincir 256000
service-policy output Voice
My understanding is this -
That the priority class will always be serviced first and will have at least 48Kbs of bw available but not more that 48Kbs.
That the Silver and Gold classes will always have a minimum of 5% of the total link bw available to them but they may use as much bw as is available.
What I am not clear on is:
1. If the line is in congestion by traffic from all classes, will Silver and Gold get their 5%? Can they grow beyond their 5% and if so, at what other class's expense - the default class?
2. How much bw may the default class use in this case of congestion? Will it attempt to use all bw- how is it limited from using the 48Kbs of priority bw and 5% + 5% of assigned bw with no policing to restrict it?
3. Are the Silver and Gold classes, since they have assigned bandwith (5%), serviced after the premium (priority) queue but before the default class?
2. All bandwidth until congestion and then the priority and bandwidth percent values take precedence - and the bandwidth percent classes may continue to grow at the default classes expense - no policing required.
3. Bandwidth percent classes are service after priority classes and before the default class
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