Quality of Service (QoS)

REFERENCE

Classifying Network Traffic

Classifying Network Traffic Using NBAR

Quality of Service Options on GRE Tunnel Interfaces

Marking Network Traffic

Applying QoS Features to Ethernet Subinterfaces

POLICING AND SHAPING

Policing and Shaping Overview

Regulating Packet Flow on a Per-Interface Basis Using Generic Traffic Shaping

Percentage-Based Policing and Shaping Based on Bandwidth

QOS question Shape peak and Shape average

Quality of Service Solutions Commands
shape

  • shape average
    TC時間に対して、トークンがBcだけ補充される
  • shape peak
    TC時間に対して、トークンがBc+Be補充される

[参考] MQC Single-Token Dual-Token

[参考] MQC Single-Rate Two-Rate

 

Compression AND Link Fragmentation and Interleaving

Understanding Data Compression

WAN Compression FAQs

Header Compression

Configuring RTP Header Compression

Configuring TCP Header Compression

Configuring Class-Based RTP and TCP Header Compression

Configuring Header Compression Using IPHC Profiles

 

(config-if)# ip tcp header-cokpression [ passive |iphc-format|ietf-format ]

passive

  • PPPは使えない
  • 出力トラフィックのみ(同じIFで入力トラフィックがあっても圧縮しない)

iphc-format (iphc = IP Header Compression)

  • PPPやHDLCで使う、Frame Relay はダメ
  • 有効にすると同時にRTP Header Compression も有効になる
  • 対向ルータと両方で有効にする

ietf-format

  • HDLCではTCPが有効
  • PPPではTCPとRTPの両方有効
  • Frame Relay では使えない
  • 対向ルータと両方で有効にする

Configuring Link Fragmentation and Interleaving for Multilink PPP

QOS を実装した PPP リンク上での VoIP(LLQ / IP RTP プライオリティ、LFI、cRTP)

 

VOICE

Frame Relay Voice-Adaptive Traffic Shaping and Fragmentation

 

NOTE

[参考] Hold-Queue and Tx-Ring

[参考] QoS Congestion Management

[参考] MQC Bandwidth Reservations

QoS Congestion Avoidance

 

[参考] Selective Packet Discard

[参考] QoS Modified Deficit Round Robin

 

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