QoS Shaping Active = No

naughtypig · ‎01-22-2013

Hi all, hope you can set me straight - I've been struggling for a while..

I have a 10Meg Ethernet WAN connection experiencing congestion during busy periods, have applied QoS (per the design guides), but shaping doesn't become active during the congested periods. So instead of default traffic being dropped during congestion, packets are dropped from higher priority Q's ??????????

RouterA FA0/0 <---> 10Mb Ether Link <---> RouterB FA0/0

========================

Interface clearly show congestion/saturation - Output drops incrementing.

s1#sh int fa 0/1

FastEthernet0/1 is up, line protocol is up

Hardware is MV96340 Ethernet, address is 001b.54dd.48a1 (bia 001b.54dd.48a1)

Description: <Removed>

Internet address is 10.x.x.x/29

MTU 1500 bytes, BW 10240 Kbit, DLY 100 usec,

reliability 255/255, txload 52/255, rxload 247/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters 5d00h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 232921

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 9951000 bits/sec, 1600 packets/sec

5 minute output rate 2095000 bits/sec, 1365 packets/sec

276278257 packets input, 3761033354 bytes

Received 365 broadcasts, 0 runts, 0 giants, 0 throttles

928 input errors, 0 CRC, 0 frame, 0 overrun, 928 ignored

0 watchdog

0 input packets with dribble condition detected

238458136 packets output, 1326468110 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

=======================================

Shaping Active = No,..........and I loose critical traffic (Telnet seen from screen echos)

s1#sh policy-map interface

FastEthernet0/1

Service-policy output: EIGHT-CLASS-EDGE-SHAPE

Class-map: class-default (match-any)

238854321 packets, 91711868760 bytes

5 minute offered rate 2138000 bps, drop rate 0 bps

Match: any

Traffic Shaping

Target/Average Byte Sustain Excess Interval Increment

Rate Limit bits/int bits/int (ms) (bytes)

10240000/10240000 64000 256000 256000 25 32000

Adapt Queue Packets Bytes Packets Bytes Shaping

Active Depth Delayed Delayed Active

- 0 238621408 1359006126 35942944 147155430 no

Service-policy : EIGHT-CLASS-EDGE

Class-map: VOICE (match-any)

221885 packets, 58197480 bytes

5 minute offered rate 1000 bps, drop rate 0 bps

Match: ip dscp ef (46)

221885 packets, 58197480 bytes

5 minute rate 1000 bps

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 2 (%)

Bandwidth 204 (kbps) Burst 5100 (Bytes)

(pkts matched/bytes matched) 4900/1142121

(total drops/bytes drops) 3/3741

Class-map: VIDEO (match-all)

38662 packets, 6089070 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp af41 (34) af42 (36)

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 2 (%)

Bandwidth 204 (kbps) Burst 5100 (Bytes)

(pkts matched/bytes matched) 751/136999

(total drops/bytes drops) 3/2871

Class-map: MISSION-CRITICAL (match-any)

7038039 packets, 2451792280 bytes

5 minute offered rate 93000 bps, drop rate 0 bps

Match: ip dscp cs3 (24)

23 packets, 2110 bytes

5 minute rate 0 bps

Match: ip dscp af31 (26)

0 packets, 0 bytes

5 minute rate 0 bps

Match: ip dscp 25

6343139 packets, 2413057566 bytes

5 minute rate 90000 bps

Match: protocol telnet

694877 packets, 38732550 bytes

5 minute rate 3000 bps

Queueing

Output Queue: Conversation 265

Bandwidth 16 (%)

Bandwidth 1638 (kbps)

(pkts matched/bytes matched) 708318/495476590

(depth/total drops/no-buffer drops) 0/137/0

exponential weight: 9

mean queue depth: 0

class Transmitted Random drop Tail drop Minimum Maximum Mark

pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 704154/40197576 28/2002 0/0 20 40 1/10

1 0/0 0/0 0/0 22 40 1/10

2 0/0 0/0 0/0 24 40 1/10

3 6343053/2412912572 109/147158 0/0 26 40 1/10

4 0/0 0/0 0/0 28 40 1/10

5 0/0 0/0 0/0 30 40 1/10

6 3581/267900 0/0 0/0 32 40 1/10

7 0/0 0/0 0/0 34 40 1/10

rsvp 0/0 0/0 0/0 36 40 1/10

Class-map: TRANSACTIONAL-DATA (match-any)

125581 packets, 10447103 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp af21 (18) af22 (20)

125581 packets, 10447103 bytes

5 minute rate 0 bps

Queueing

Output Queue: Conversation 266

Bandwidth 26 (%)

Bandwidth 2662 (kbps)

(pkts matched/bytes matched) 8141/681655

(depth/total drops/no-buffer drops) 0/0/0

exponential weight: 9

mean queue depth: 0

class Transmitted Random drop Tail drop Minimum Maximum Mark

pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 161/23158 0/0 0/0 20 40 1/10

1 0/0 0/0 0/0 22 40 1/10

2 125581/10447103 0/0 0/0 24 40 1/10

3 0/0 0/0 0/0 26 40 1/10

4 0/0 0/0 0/0 28 40 1/10

5 0/0 0/0 0/0 30 40 1/10

6 27/2396 0/0 0/0 32 40 1/10

7 0/0 0/0 0/0 34 40 1/10

rsvp 0/0 0/0 0/0 36 40 1/10

Class-map: BULK-DATA (match-any)

26279783 packets, 1908707356 bytes

5 minute offered rate 23000 bps, drop rate 0 bps

Match: ip dscp af11 (10) af12 (12)

47945 packets, 68306309 bytes

5 minute rate 0 bps

Match: protocol ftp

26231838 packets, 1840401107 bytes

5 minute rate 23000 bps

Match: access-group name ACL-FTP

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

Output Queue: Conversation 267

Bandwidth 18 (%)

Bandwidth 1843 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 1444542/162739075

(depth/total drops/no-buffer drops) 0/13/0

Class-map: SCAVENGER (match-all)

55957 packets, 74252292 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp cs1 (8)

Queueing

Output Queue: Conversation 268

Bandwidth 3 (%)

Bandwidth 307 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 5158/6857708

(depth/total drops/no-buffer drops) 0/0/0

Class-map: NETWORK-CONTROL (match-any)

1655047 packets, 148678270 bytes

5 minute offered rate 2000 bps, drop rate 0 bps

Match: ip dscp cs6 (48)

1655047 packets, 148678270 bytes

5 minute rate 2000 bps

Queueing

Output Queue: Conversation 269

Bandwidth 3 (%)

Bandwidth 307 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 37469/3413361

(depth/total drops/no-buffer drops) 0/0/0

Class-map: class-default (match-any)

203439364 packets, 87053713298 bytes

5 minute offered rate 2004000 bps, drop rate 0 bps

Match: any

Queueing

Output Queue: Conversation 270

Bandwidth 30 (%)

Bandwidth 3072 (kbps)

(pkts matched/bytes matched) 33707090/33966099582

(depth/total drops/no-buffer drops) 0/232765/0

exponential weight: 9

mean queue depth: 0

class Transmitted Random drop Tail drop Minimum Maximum Mark

pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 203132141/86878262541 230251/157362067 2485/1023877 20 40 1/10

1 0/0 0/0 0/0 22 40 1/10

2 0/0 0/0 0/0 24 40 1/10

3 0/0 0/0 0/0 26 40 1/10

4 14/1540 0/0 0/0 28 40 1/10

5 28927/10551838 2/1326 0/0 30 40 1/10

6 52079/4653255 26/2293 1/90 32 40 1/10

7 0/0 0/0 0/0 34 40 1/10

rsvp 0/0 0/0 0/0 36 40 1/10

s1#

====================================

policy-map EIGHT-CLASS-EDGE-SHAPE

class class-default

shape average 10240000

service-policy EIGHT-CLASS-EDGE

!

interface FastEthernet0/1

bandwidth 10240

ip address 10.x.x.x

no ip redirects

duplex full

speed 100

no cdp enable

service-policy output EIGHT-CLASS-EDGE-SHAPE

!

s1#sh inter fa 0/1 summ

*: interface is up

IHQ: pkts in input hold queue IQD: pkts dropped from input queue

OHQ: pkts in output hold queue OQD: pkts dropped from output queue

RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)

TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)

TRTL: throttle count

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL

------------------------------------------------------------------------

* FastEthernet0/1 0 0 0 232921 9948000 1603 2085000 1359 0

s1#

============================

mlund · ‎01-23-2013

Hi

It seems for me that the shaping is functional.

Adapt Queue Packets Bytes Packets Bytes Shaping

Active Depth Delayed Delayed Active

- 0 238621408 1359006126 35942944 147155430 no

packets have been delayed that shows packet have been in the queue waiting to be send

shaping active = no, this means that the time you hit return (exactly that millisecond) the shaping was inactive

there has been 3 packets drop from VOICE queue and also 3 from Video

perhaps You have to tweek Your priorityvalues a little to get rid of these drops.

/Mikael