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QoS�ϼºݤ˼�̳�ǻȤäƤ�������󤢡�

---QoS

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�ɤ�ʥ����ס�DSCP�Ȥ�IP Precedence�ˤ�Ȥ�����ʬ�ष��
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WFQ�Ȥ������塼���󥰡ܥ������塼��󥰤ˤ����롣

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��IEEE802.1p��CoS��Class of Service��
��CoS(3bit)�ϥ������ͥåȥإå��˴ޤޤ�ʤ���
��VLAN����(TPID+TCI��TCI�Τۤ�)�˴ޤޤ�롣
��VLAN����(16bit)��Cos��CFI(1bit)��VLAN ID��12bit��
����TCI �� TPID��TCI��4bit

��WRED��Weighted Random Early Detection��
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�ʥ�󥯸�Ψ���ᥫ�˥����
��RTP�إå����̡�RTP�إå���2byte�˰��̤���
��RTP�إå�(40byte)=RTP(12)+IP(8)+UDP(20)

��LFI��Link Fragmentation and Interleaving��
��L2��٥�Ƕ����˥ѥ��åȤ�ե饰���Ȳ����롣
��������ͥ���٤ι⤤�����ѥѥ��åȤʤɤ���������������

��Moduler QoS��
��MQC��Moduler QoS CLI��
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�ʤ��ä����ʤ�ǻ������٤˥��ޥ�ɡ�

---�Ȥꤢ�������饹�ޥå�
Router2514_B(config)#class-map match-all Test_QoS
Router2514_B(config-cmap)#match ?
  access-group         Access group
  any                  Any packets
  class-map            Class map
  cos                  IEEE 802.1Q/ISL class of service/user priority values
  destination-address  Destination address
  discard-class        Discard behavior identifier
  dscp                 Match DSCP in IP(v4) and IPv6 packets
  fr-de                Match on Frame-relay DE bit
  fr-dlci              Match on fr-dlci
  input-interface      Select an input interface to match
  ip                   IP specific values
  mpls                 Multi Protocol Label Switching specific values
  not                  Negate this match result
  packet               Layer 3 Packet length
  precedence           Match Precedence in IP(v4) and IPv6 packets
  protocol             Protocol
  qos-group            Qos-group
  source-address       Source address

---precedence�ǥޡ����󥰤���Ȥ�
Router2514_B(config-cmap)#match precedence ?
  <0-7>           Enter up to 4 precedence values separated by white-spaces
  critical        Match packets with critical precedence (5)
  flash           Match packets with flash precedence (3)
  flash-override  Match packets with flash override precedence (4)
  immediate       Match packets with immediate precedence (2)
  internet        Match packets with internetwork control precedence (6)
  network         Match packets with network control precedence (7)
  priority        Match packets with priority precedence (1)
  routine         Match packets with routine precedence (0)

---�ݥꥷ�ޥåפǥ��饹�ޥåפ����򤹤��
Router2514_B(config)#policy-map Test_MAP
Router2514_B(config-pmap)#class ?
  WORD            class-map name
  class-default   System default class matching otherwise unclassified packets

Router2514_B(config-pmap)#class Test_CLASS
Router2514_B(config-pmap-c)#?
QoS policy-map class configuration commands:
  bandwidth       Bandwidth
  compression     Activate Compression
  drop            Drop all packets
  exit            Exit from QoS class action configuration mode
  no              Negate or set default values of a command
  police          Police
  priority        Strict Scheduling Priority for this Class
  queue-limit     Queue Max Threshold for Tail Drop
  random-detect   Enable Random Early Detection as drop policy
  service-policy  Configure QoS Service Policy
  shape           Traffic Shaping

---���󥿥ե������˥ݥꥷ�ޥåפ������Ƥ롣
Router2514_B(config-if)#service-policy ?
  history  Keep history of QoS metrics
  input    Assign policy-map to the input of an interface
  output   Assign policy-map to the output of an interface

Router2514_B(config-if)#service-policy input ?
  WORD  policy-map name

---��ǧ
Router2514_B#show policy-map interface ethernet 0
 Ethernet0

  Service-policy input: IP

    Class-map: class-default (match-any)
      13 packets, 806 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
---

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