policy-map test
class ce_management
police 8000 8000 16000 conform-action set-prec-transmit 6 exceed-action set-prec-transmit 2
bandwidth 8
random-detect
random-detect exponential-weighting-constant 6
random-detect precedence 6 39 62 10
class voice
police 212000 2000 2000
priority 214 1000
class application_data
police 918000 34000 34000 conform-action set-prec-transmit 6 exceed-action set-prec-transmit 2
bandwidth 1183
random-detect
random-detect exponential-weighting-constant 6
random-detect precedence 6 39 62 10
random-detect precedence 2 12 31 5
random-detect precedence 0 39 62 10
class class-default
police 8000 8000 8000 conform-action set-prec-transmit 5 exceed-action set-prec-transmit 5
bandwidth 131
random-detect
random-detect exponential-weighting-constant 6
random-detect precedence 5 12 31 5
Above config. is apply to T1 link and below is T1 int. config.
interface Serial1/3/0:0
no ip x.x.x.x x.x.x.x
encapsulation frame-relay IETF
load-interval 30
tx-ring-limit 1
tx-queue-limit 1
frame-relay lmi-type ansi
max-reserved-bandwidth 100
end
voice class looks for prec. 4 traffic and is feed with prec. 4 traffic.
data class looks for prec. 6 traffic and is feed with prec. 6 traffic
default-class is feed with prec. 5 traffic.
management looks for routing protocol traffic and rest is matched in default.
When voice class feed to police rate, application data class and default-class are fed with marked traffic to the config. bw under resp. class i.e. total traffic approached 1536K which is T1 interface BW.
Then random drops are observed under class-default and under application data class for traffic which is remarked to prec. 2
Question:- each class traffic is not exceeding the allocated bw. then why the random drops present in application data class and default-class?
If we assume that traffic on link is approaching 90% of interface bw and hence drops are observed then why drops are observed for application data class?
