I have a service policy configured on a 2MB serial interface on a 2620, policy-map is as follows:
policy-map queue
class critical
priority 204
set ip dscp ef
class priority
bandwidth percent 80
class class-default
fair-queue
random-detect dscp-based
set ip dscp default
I have max-reserved-bandwidth of 100%. As I have reserved 90% (10% for critical and 80% for priority), I would expect to see a further 10% (204kbps) as being available. I use this same policy on 3 other routers, all to that result.
However, when I do a show run int, I see that 1844kbps are still available:
Serial0/0 is up, line protocol is up
Hardware is PowerQUICC Serial
Internet address is x.x.x.x/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 181/255, rxload 31/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 101787
Queueing strategy: weighted fair
Output queue: 0/1000/64/101603 (size/max total/threshold/drops)
Conversations 0/50/256 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 1844 kilobits/sec
5 minute input rate 251000 bits/sec, 362 packets/sec
5 minute output rate 1457000 bits/sec, 311 packets/sec
738303666 packets input, 4012471098 bytes, 0 no buffer
Received 846788 broadcasts, 0 runts, 0 giants, 0 throttles
10 input errors, 0 CRC, 8 frame, 0 overrun, 0 ignored, 2 abort
599171675 packets output, 2803364940 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
What's going on here, or is this a normal way of representing for a 2620? My 2800's represent it as 204/10% as expected.
Any one can shed light on this it would be much appreciated! Thanks.
r1#show policy-map int
Serial0/0
Service-policy output: queue
Class-map: critical (match-any)
566218 packets, 38772726 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: access-group 181
566218 packets, 38772726 bytes
5 minute rate 0 bps
Queueing
Strict Priority
Output Queue: Conversation 264
Bandwidth 204 (kbps) Burst 5100 (Bytes)
(pkts matched/bytes matched) 326895/21815708
(total drops/bytes drops) 0/0
QoS Set
dscp ef
Packets marked 566218
Class-map: priority (match-any)
7705221 packets, 3601939397 bytes
5 minute offered rate 715000 bps, drop rate 0 bps
Match: access-group 180
7705213 packets, 3601939455 bytes
5 minute rate 715000 bps
Queueing
Output Queue: Conversation 265
Bandwidth 80 (%) Max Threshold 64 (packets)
(pkts matched/bytes matched) 5162685/2786697189
(depth/total drops/no-buffer drops) 2/13549/0
Class-map: class-default (match-any)
3082096 packets, 3741578423 bytes
5 minute offered rate 1085000 bps, drop rate 0 bps
Match: any
Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 256
(total queued/total drops/no-buffer drops) 12/738/0
exponential weight: 9
