I am preparing for my CCIP and the QoS exam seems to be the most tough one.
Say i design a LLQ technique like the below
class-map match-all voip
match ip DSCP EF
int fa 0/0
service-policy ouput VOIP
If i do a sh int fa 0/0, it shows the available bandwidth as (5120-1024=4096K) which is expected.
What i would like to know is whether the 1024K is permanently reserved for EF traffic or this can be used by the class-default when no EF traffic is received