ASRのLLQにおけるParent PolicyのClassについて

Answered Question
Nov 4th, 2010

いつもお世話になります。

ちょっと困ってます。

誰かご教授ください。

題記の件、詳細は下記の通りです。

機器:ASR1006

Version:2.6.1(12.2(33)XNF1)

構成

IXIA----->->----ASR1006---->-->-----IXIA

-----config------

policy-map Policy1
class PQ-1
    priority percent 33
class Q1
    bandwidth percent 20
class Q2
    bandwidth percent 10
class ctl
    bandwidth percent 5
class class-default
!

policy-map CBWFQ-LLQ
class class-default
    shape average 1000000
   service-policy Policy1
!
-----------------------------------------

上記のように親Policy(CBWFQ-LLQ)で

class-defaultを設定すると、正常に動作します。

これを下記のconfigのようにclassをshapeと変更すると

PQのTrafficのみを出力する動きをします。

--------config----------------------

policy-map CBWFQ-LLQ
class shape
    shape average 1000000
   service-policy Policy1
!
---------------------------------------

CCOを確認しましたが、参考になる有益な情報は見つかりませんでした。

知りたいのは、LLQを使用する場合、親PolicyのClassはclass-defaultのみサポートしているという

記載があるドキュメントです。

以上です。

I have this problem too.
0 votes
Correct Answer by sunsong about 3 years 4 months ago

回答が遅くなったかも知れませんが、下記のような情報がございます。

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

http://www.cisco.com/en/US/partner/docs/ios/ios_xe/2/release/notes/rnasr21.html#wp1483956

User-Defined Parent Class Limitation (for Conditional Policer)

On a Cisco ASR 1000 Series Router with hierarchical QoS and user-defined parent classes applied, each child policy must use an unconditional policer (priority + policer). The use of conditional policers (priority x kbps) is not supported in these configurations in Cisco IOS XE Release 2.3.0. For more details, see CSCsy99583 conditional policer not working on user defined class

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

Condtional policer / Unconditional policer

Condtional policer : Congestionが発生しているConditionPolicingが発生

Unconditional policer : Congestoinに関係なくPolicingが発生

(一般的にいうRate-limitに相当します。)

なので、Userが正義したClassにPQを適用するには下記のように設定して頂く必要がございます。

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

class PQ

  priority

  police xxxxxx

ご参考になればと思います。

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t-yamashita Thu, 11/04/2010 - 03:18

こんにちは。

以下にそれらしい記述がありました。

http://www.ciscosystemsverified.biz/en/US/docs/ios/ios_xe/qos/configuration/guide/qos_policies_agg_xe_ps9587_TSD_Products_Configuration_Guide_Chapter.html#wp1055034

Step5 の qos-queueing-feature についてです。

Enters a QoS configuration command. Only queueing features are supported in default traffic classes configured as fragments.
The queueing features that are currently supported are bandwidth, shape, and random-detect exponential-weighting-constant.
Multiple QoS queueing commands can be entered.


ご参考になれば幸いです。


T-Yamashita

yu.yoshida Thu, 11/11/2010 - 01:31

山下様

ご回答ありがとうございます。

参考にします。

Correct Answer
sunsong Tue, 11/30/2010 - 08:23

回答が遅くなったかも知れませんが、下記のような情報がございます。

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

http://www.cisco.com/en/US/partner/docs/ios/ios_xe/2/release/notes/rnasr21.html#wp1483956

User-Defined Parent Class Limitation (for Conditional Policer)

On a Cisco ASR 1000 Series Router with hierarchical QoS and user-defined parent classes applied, each child policy must use an unconditional policer (priority + policer). The use of conditional policers (priority x kbps) is not supported in these configurations in Cisco IOS XE Release 2.3.0. For more details, see CSCsy99583 conditional policer not working on user defined class

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

Condtional policer / Unconditional policer

Condtional policer : Congestionが発生しているConditionPolicingが発生

Unconditional policer : Congestoinに関係なくPolicingが発生

(一般的にいうRate-limitに相当します。)

なので、Userが正義したClassにPQを適用するには下記のように設定して頂く必要がございます。

/* Style Definitions */ table.MsoNormalTable {mso-style-name:標準の表; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Arial","sans-serif"; mso-ascii-font-family:Arial; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Arial; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}

class PQ

  priority

  police xxxxxx

ご参考になればと思います。

yu.yoshida Tue, 02/22/2011 - 00:07

sunsong様

こちらからの返信が滞りましたことを深くお詫び致します。

まさにこの情報です。

ありがとうございます。

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Posted November 4, 2010 at 2:50 AM
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