Your child class-default, even with WRED, could obtain 100% of the available bandwidth. The class bandwidth sets a minimum guarantee for bandwidth in non-LLQ classes. Also, the purpose of WRED it to actually improve TCP goodput over a single queue using FIFO.
An item that appears odd in your example, assuming the serial is a T-1, there's not much point to use a shaper at the link's capacity.
I understood your point, but my query is mentioned below.
WRED as well as shaping will come in effect when there is congestion on the link.
WRED will not allow traffic to go above the configured bandwidth by dropping the packets so when the bandwidth in a default class is not reaching to configured bandwidth, then what is the point to shape the traffic at bandwidth level of interface?
What is the point of shaping the traffic at a higher level, when you have already configured it to WRED it at a lower level. However as far I think, Shaping does apply to all kinds of traffic where as WRED is applicable to TCP traffic only. Hence though WRED will work perfectly for TCP, if your load is more UDP, shaping should do the rest.
Finally, to check it I guess I would do a lab and see what really happens.
"WRED as well as shaping will come in effect when there is congestion on the link. "
Actually depends on configuration. WRED applies to congestion within the queue it's attached to. It's possible the interface could be congested, but not the queue WRED is attached to.
"WRED will not allow traffic to go above the configured bandwidth by dropping the packets so when the bandwidth in a default class is not reaching to configured bandwidth, then what is the point to shape the traffic at bandwidth level of interface?"
WRED has nothing to do with configured bandwidth, it monitors the average queue size and drops packets based on the average queue size vs. its settings.
WRED may (e.g. TCP), or may not (e.g. most non-TCP), have any impact as to limiting offered bandwidth. Since WRED settings are usually based on a running average queue size, the output tied to the queue will often burst to or even sustain 100%.
As to why shape to the bandwidth level of the physical interface, doesn't make much sense as I noted in my original post.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.