Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

sh policy-map LLQ counters showing strange results.

I've config'd LLQ for video conferencing across a dual-T1 multilink connection. When I have a video conf. session going, the Class-map counters for 'packets', 'match' and 'pkts matched' under queueing being exactly the same. This is supposed to show either that all packets are being processed switched - which they aren't, or that there is congestion on the link, but there isn't. There is nothing else going across the link except my telnet session I use to get the counters. I would have expected all counters, except Class-default, to be zero under the queueing area, and then when I flood the link with large file transfers, the other class queueing counters to begin incrementing - but all counters are equal even without congestion. This doesn't help me prove that my QOS LLQ is working properly. What gives?

Here is the config and some outputs:

policy-map WAN-multilink

class Voice

priority 90

class Video

bandwidth 460

class Call-Control

bandwidth 27

class class-default

fair-queue

random-detect

policy-map QOS_classes

class Voice

priority 90

class Video

bandwidth 460

class Call-Control

bandwidth 27

class class-default

fair-queue

interface Multilink1

!

!

!

ppp multilink

ppp multilink fragment delay 20

ppp multilink interleave

ppp multilink group 1

max-reserved-bandwidth 95

service-policy output WAN-multilink

!

interface Serial0/2/0

!

bandwidth 1536

encapsulation ppp

no fair-queue

service-module t1 timeslots 1-24

ppp multilink

ppp multilink group 1

max-reserved-bandwidth 95

!

interface Serial0/3/0

!

bandwidth 1536

encapsulation ppp

no fair-queue

service-module t1 timeslots 1-24

ppp multilink

ppp multilink group 1

max-reserved-bandwidth 95

MDF-VoIP-RT2811#sh int stats

!

Multilink1

Switching path Pkts In Chars In Pkts Out Chars Out

Processor 2175 179609 2436 237735

Route cache 7519 3809321 7416 2108198

Total 9694 3988930 9852 2345933

MDF-VoIP-RT2811#sh policy-map int mu 1

Multilink1

Service-policy output: WAN-multilink

Class-map: Voice (match-any)

2037 packets, 411126 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp ef (46)

2037 packets, 411126 bytes

5 minute rate 0 bps

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 90 (kbps) Burst 2250 (Bytes)

(pkts matched/bytes matched) 2037/411126

(total drops/bytes drops) 0/0

Class-map: Video (match-any)

1919 packets, 1087702 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp af41 (34)

1919 packets, 1087702 bytes

5 minute rate 0 bps

Match: ip precedence 4

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

Output Queue: Conversation 265

Bandwidth 460 (kbps) Max Threshold 64 (packets)

(pkts matched/bytes matched) 1919/1087702

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

Class-map: Call-Control (match-any)

430 packets, 31418 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp cs3 (24)

430 packets, 31418 bytes

5 minute rate 0 bps

Match: ip precedence 3

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

Output Queue: Conversation 266

Bandwidth 27 (kbps) Max Threshold 64 (packets)

(pkts matched/bytes matched) 430/31418

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

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

4669 packets, 612771 bytes

5 minute offered rate 3000 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) 0/0/0

exponential weight: 9

156
Views
0
Helpful
0
Replies
CreatePlease login to create content