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Cisco uBR7200 �V���[�Y
Cisco Cable Modem Termination System (CMTS) �̊T�v
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Cisco CMTS �̃A�h�~�b�V��������
Cisco CMTS �ɂ�����P�[�u���d�� MAC �A�h���X����
Cisco CMTS �̃P�[�u�� �C���^�[�t�F�C�X �o���h�����O�Ɖ��z�C���^�[�t�F�C�X �o���h�����O
Cisco CMTS �̃P�[�u�� ���j�^����іT��@�\
Cisco CMTS �� COPS �G���W������
Cisco Cable Modem Termination System�iCMTS�j�̊T�v
Cisco CMTS �� DOCSIS 1.1
Cisco CMTS �� DOCSIS 2.0 A-TDMA �ϒ��v���t�@�C��
Cisco CMTS �̓��� DOCSIS �R���t�B�M�����[�V���� �t�@�C�� �W�F�l���[�^
Cisco CMTS �� EtherChannel
Cisco CMTS �̃t���b�v ���X�g �g���u���V���[�e�B���O
Cisco CMTS �̍ő� CPE ����� Host �p�����[�^
Cisco CMTS �� N+1 �璷�\��
Cisco CMTS PacketCable ����� PacketCable �̃}���`���f�B�A
Cisco CMTS �ł� PPPoE �̏I�[
Cisco CMTS �̃T�[�r�X �t���[ �A�h�~�b�V��������
Cisco CMTS �� MPLS-VPN �ւ̃T�[�r�X �t���[�̃}�b�s���O
Cisco CMTS �̃X�y�N�g���Ǘ�����э��x�ȃX�y�N�g���Ǘ�
Cisco CMTS �� Telco ���^�[��
Cisco CMTS �� ToD �T�[�o
Cisco CMTS �� UDI ����
Cisco CMTS �̃A�b�v�X�g���[�� �X�P�W���[�� ���[�h
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Cisco Cable Modem Termination System�iCMTS�j�̊T�v

���F February 5, 2007, OL-1467-08-J

���̃}�j���A���ł́A�A�b�v�X�g���[�� �X�P�W���[�� ���[�h���I�v�V�����Őݒ肷���@��������܂��B

���̋@�\���g�p����ƁAUnsolicited Grant Service�iUGS�j�܂��� Real Time Polling Service�irtPS�j�X�P�W���[�����O �^�C�v�̂ǂ��炩�����w��ł��܂��B�܂��A�p�P�b�g�x�[�X�܂��� TDM �x�[�X�̃X�P�W���[�����O���w��ł��܂��BLow Latency Queuing�iLLQ; ��x���L���[�C���O�j�́ADOCSIS �� Time Division Multiplexing�iTDM; ���������d�j�C���t���X�g���N�`���Ńp�P�b�g���[�h�Ɏ���������G�~�����[�g���܂��B���̂悤�ɁA���̋@�\�̓p�P�b�g�� TDM �̈�ʓI�ȃg���[�h�I�t��񋟂��܂��BLLQ ���g�p����ƁA���[�U�͂��_��� UGS �܂��� rtPS �̃T�[�r�X �p�����[�^���`�ł��܂����Adelay �� jitter �Ȃǂ̃p�����[�^�ɂ‚��Ă͓��v���z�ȊO�̕ۏ؂͉�������܂���B

DOCSIS �A�b�v�X�g���[�� �X�P�W���[�� ���[�h�@�\�̋�������

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12.3(13)BC

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�v���b�g�t�H�[������� Cisco IOS �\�t�g�E�F�A �C���[�W�̃T�|�[�g���

�v���b�g�t�H�[������� Cisco IOS �\�t�g�E�F�A �C���[�W�̃T�|�[�g���𒲂ׂ�ɂ́ACisco Feature Navigator ���g�p���܂��BCisco Feature Navigator �́A http://www.cisco.com/go/fn ����A�N�Z�X�ł��܂��BFeature Navigator �ɃA�N�Z�X����ɂ́ACisco.com �̃A�J�E���g���K�v�ł��B�A�J�E���g��o�^���Ă��Ȃ��ꍇ�A�܂��̓��[�U���ƃp�X���[�h��Y�ꂽ�ꍇ�ɂ́A���O�C�� �_�C�A���O �{�b�N�X�� Cancel ���N���b�N���ĕ\�������菇�ɏ]���܂��B

���e

Configuring Upstream Scheduler Modes�̑O�����
Configuring Upstream Scheduler Modes�̐�������
Configuring Upstream Scheduler Modes�̊T�v
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�R�}���h ���t�@�����X

Configuring Upstream Scheduler Modes�̑O�����

���̋@�\�͂��ׂĂ� Cisco CMTS ���[�^�ɊY�����܂��B

Configuring Upstream Scheduler Modes�̐�������

���̋@�\�ɂ͎��̐���������܂��B

・ ������������m�ۂ���ɂ́ACAC ���C�l�[�u���ɂ���K�v������܂��BLLQ �I�v�V�������C�l�[�u���ɂ���ƁA�A�b�v�X�g���[�� �p�X����ʂ̃R�[���ł����ς��ɂȂ��Ďg���Ȃ��Ȃ�A���e�ł��Ȃ������i���ɂȂ��Ă��܂��܂��BCAC ���g���ăR�[�����𐧌����A�����i�������e�ł�����̂ɂ���K�v������܂��B�܂��A�����g���t�B�b�N�ȊO�̃g���t�B�b�N���m�ۂ���K�v������܂��B
・ CAC ���C�l�[�u���ɂ��Ă��Ȃ��ꍇ�ł��A���̌Ăяo�����ɒB����ƃf�t�H���g�iDOCSIS�j�̃X�P�W���[�����O ���[�h���g���t�B�b�N���u���b�N���܂��B
・ Unsolicited Grant Services with Activity Detection�iUGS-AD�j����� Non Real Time Polling Service�inrtPS�j�̓T�|�[�g����Ă��܂���B

Configuring Upstream Scheduler Modes�̊T�v

UGS �ł́A�ۏ؂��ꂽ���[�g�ƕۏ؂��ꂽ�W�b�^ ���x���ŌŒ�T�C�Y�̃f�[�^ �o�[�X�g���P�[�u�� ���f���ő��M�ł���T�[�r�X �t���[���`������A�P�[�u�� ���f���ŌŒ�T�C�Y�̃t���[������I�ɑ��M�ł���悤�ɂȂ�܂��B���̂悤�ȃT�[�r�X �t���[�́A���� Voice over IP�iVoIP�j�A�v���P�[�V�����ɓK���Ă��܂��B

rtPS �ł́A�P�[�u�� ���f�������I�Ƀf�[�^���M���‚�v���ł���T�[�r�X �t���[���`������܂��B���̏ꍇ�A1 �‚̑ш�v�����|�[�����O����̂́A�S���f���ł͂Ȃ� 1 ��̃P�[�u�� ���f���ł��B���̃T�[�r�X �t���[�̓��A���^�C�� �f�[�^�ʐM��K�v�Ƃ��A���܂��܂Ȓ����̃f�[�^ �o�[�X�g���P�[�u�� ���f���ő��M�ł���A�v���P�[�V�����ɂӂ��킵���A���� MPEG VoIP �ɓK���Ă��܂��B

�A�b�v�X�g���[�� �X�P�W���[�� ���[�h�̐ݒ��@

�����ł́ACisco CMTS �v���b�g�t�H�[����ŃA�b�v�X�g���[�� �X�P�W���[�� ���[�h�@�\���g�p����ꍇ�ɁA�ł���ʓI�Ȑݒ��Ƃɂ‚��Đ������܂��B

�X�e�b�v�̊T��

1. enable
2. configure terminal
3. interface cable x/y
�܂���
interface cable x/y/z
4. cable upstream n scheduling type [ugs | rtps] mode [llq | docsis]
5. cable upstream n scheduling type [ugs | rtps] mode [llq | docsis]
6. end

�X�e�b�v�̏ڍ�

�R�}���h�܂��͏���

�ړI

�X�e�b�v 1

enable

��:

Router> enable

���� EXEC ���[�h���J�n���܂��B�K�v�ȏꍇ�́A�p�X���[�h���͂��܂��B

�X�e�b�v 2

configure terminal

��:

Router# configure terminal

�O���[�o�� �R���t�B�M�����[�V���� ���[�h���J�n���܂��B

�X�e�b�v 3

interface cable x/y
or

interface cable x/y/z

��:

Router(config)# interface cable 5/1

Router(config-if)#

����̃P�[�u�� �C���^�[�t�F�C�X�ɑ΂��āA�C���^�[�t�F�C�X �R���t�B�M�����[�V���� ���[�h���J�n���܂��B

�X�e�b�v 4

cable upstream n scheduling type [ugs | rtps] mode [llq | docsis]

��:

Router(config-if)# cable upstream 4 scheduling type ugs mode llq

UGS �T�[�r�X�ɑ΂���p�P�b�g �x�[�X�� LLQ �^�C�v �X�P�W���[�����O���C�l�[�u���ɂ��܂��B n �́A�A�b�v�X�g���[�� �|�[�g���w�肵�܂��B�L��Ȓl�́A�P�[�u�� �C���^�[�t�F�C�X ���C�� �J�[�h�̍ŏ��̃A�b�v�X�g���[�� �|�[�g�̏ꍇ�A0 ����n�܂�܂��B

�i���j ugs �A rtps �A llq �A docsis �̔C�ӂ̑g�ݍ��킹���g�p�ł��܂��B�f�t�H���g�l�� docsis �����ł��B

�X�e�b�v 5

cable upstream n scheduling type [ugs | rtps] mode [llq | docsis]

��:

Router(config-if)# cable upstream 4 scheduling type rtps mode docsis

rtPS �T�[�r�X�ɑ΂��� TDM �x�[�X�̕W�� DOCSIS �X�P�W���[�����O���C�l�[�u���ɂ��܂��B n �́A�A�b�v�X�g���[�� �|�[�g���w�肵�܂��B�L��Ȓl�́A�P�[�u�� �C���^�[�t�F�C�X ���C�� �J�[�h�̍ŏ��̃A�b�v�X�g���[�� �|�[�g�̏ꍇ�A0 ����n�܂�܂��B

�i���j ugs �A rtps �A llq �A docsis �̔C�ӂ̑g�ݍ��킹���g�p�ł��܂��B�f�t�H���g�l�� docsis �����ł��B

�X�e�b�v 6

end

��:

Router(config-if)# end

Router#

�C���^�[�t�F�C�X �R���t�B�M�����[�V���� ���[�h���I�����A���� EXEC ���[�h�ɖ߂�܂��B

�g���u���V���[�e�B���O�̃q���g

�X�P�W���[���� LLQ ���[�h�� DOCSIS ���[�h�̂ǂ���œ��삵�Ă��邩���m�F����ɂ́A show interface cable mac-scheduler �R�}���h���g�p���܂��BLLQ ���[�h���C�l�[�u���̏ꍇ�́A�V�����L���[���lj�����Ă��܂��B�ڂ����͉��L���Q�Ƃ��Ă��������B���̃R�}���h�̑S�\���ɂ‚��ẮACisco.com �Ŏ��̃}�j���A�����Q�Ƃ��Ă��������B

・ �w Cisco Broadband Cable Command Reference Guide �x

http://www.cisco.com/en/US/products/hw/cable/ps2217/products_command_reference_book09186a0080108e88.html

Router# show int cab 4/0 mac-sched 0

DOCSIS 1.1 MAC scheduler for Cable4/0/U0

Queue[Rng Polls] 0/128, 0 drops, max 1

Queue[CIR Grants] 0/64, 0 drops, max 0

Queue[BE(7) Grants] 0/64, 0 drops, max 0

Queue[BE(6) Grants] 0/64, 0 drops, max 0

Queue[BE(5) Grants] 0/64, 0 drops, max 0

Queue[BE(4) Grants] 0/64, 0 drops, max 0

Queue[BE(3) Grants] 0/64, 0 drops, max 0

Queue[BE(2) Grants] 0/64, 0 drops, max 0

Queue[BE(1) Grants] 0/64, 0 drops, max 0

Queue[BE(0) Grants] 0/64, 0 drops, max 0

Queue[LLQ Grants] 0/64, 0 drops, max 0 <--- This queue is added in LLQ mode.

Req Slots 153607143, Req/Data Slots 0

Init Mtn Slots 1305584, Stn Mtn Slots 145897

Short Grant Slots 47, Long Grant Slots 2939

ATDMA Short Grant Slots 0, ATDMA Long Grant Slots 0

ATDMA UGS Grant Slots 0

Awacs Slots 0

Fragmentation count 3

Fragmentation test disabled

Avg upstream channel utilization : 0%

Avg percent contention slots : 98%

Avg percent initial ranging slots : 1%

Avg percent minislots lost on late MAPs : 0%

Sched Table Adm-State: Grants 0, Reqpolls 0, Util 1%

UGS : 0 SIDs, Reservation-level in bps 0

UGS-AD : 0 SIDs, Reservation-level in bps 0

RTPS : 0 SIDs, Reservation-level in bps 0

NRTPS : 0 SIDs, Reservation-level in bps 0

BE : 2 SIDs, Reservation-level in bps 0

r4k ticks in 1ms 131000

Total scheduling events 0

No search was needed 0

Previous entry free 0

Next entry free0

Could not schedule 0

Recovery failed 0

Curr time 8282 entry 90

Router#

�Q�l����

�����ł� Cisco CMTS ���[�^�̎Q�l�������Љ�܂��B

�֘A����

�֘A����

������

Cisco CMTS �R�}���h ���t�@�����X

���� URL �Łw Cisco Broadband Cable Command Reference Guide �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/cable/bbccmref/index.htm

Cisco IOS �����[�X 12.2

���� URL �Łw Cisco IOS Release 12.2 Configuration Guides and Command References �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/index.htm

�P�[�u���@�\�̐ݒ�

���� URL �Łw Cisco CMTS Feature Guide �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cmtsfg/index.htm

Cisco uBR7100 �V���[�Y ���j�o�[�T�� �u���[�h�o���h ���[�^�̐ݒu����ѐݒ�

���� URL �Łw Cisco uBR7100 Universal Broadband Routers �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr7100/index.htm

Cisco uBR7200 �V���[�Y ���j�o�[�T�� �u���[�h�o���h ���[�^�̐ݒu����ѐݒ�

���� URL �Łw Cisco uBR7200 Universal Broadband Routers �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/index.htm

Cisco uBR10012 ���[�^�̐ݒu����ѐݒ�

���� URL �Łw Cisco uBR10012 Universal Broadband Router �x���Q�Ƃ��Ă��������B

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ubr10012/

�W���K�i

�W���K�i

�^�C�g��

DOCSIS�iData-over-Cable Service Interface Specifications�j

Data-Over-Cable Service Interface Specifications�iDOCSIS 2.0�j�́uRadio Frequency Interface Specification�vCM-SP-RFIv2.0-I08-050408

MIB

���̋@�\�ŃT�|�[�g�����V���� MIB �܂��͕ύX���ꂽ MIB �͂���܂���B

RFC

���̋@�\�ŃT�|�[�g�����V���� Request for Comments�iRFC�j�܂��͕ύX���ꂽ RFC �͂���܂���B

�e�N�j�J�� �T�|�[�g

����

�����N

Cisco �e�N�j�J�� �T�|�[�g�� Web �T�C�g�́A����y�[�W�̋Z�p�R���e���c�������”\�ŁA���i�A�Z�p�A�\�����[�V�����A�Z�p�q���g�A�c�[���ւ̃����N���܂܂�Ă��܂��BCisco.com �o�^���[�U�́A���̃y�[�W���烍�O�C�����Ă���ɖL�x�ȃR���e���c�ɃA�N�Z�X�ł��܂��B

http://www.cisco.com/techsupport

�R�}���h ���t�@�����X

�����ł͐V�����R�}���h������������܂��B

cable upstream scheduling type

�قȂ�X�P�W���[�� ���[�h���C�l�[�u���ɂ���ɂ́A cable upstream scheduling type �R�}���h���C���^�[�t�F�C�X �R���t�B�M�����[�V���� ���[�h�Ŏg�p���܂��i�P�[�u�� �C���^�[�t�F�C�X�̂݁j�B���̋@�\���f�B�Z�[�u���ɂ���ɂ́A���̃R�}���h�� no �`�����g�p���܂��B

cable upstream n scheduling type [ ugs | rtps ] mode [ llq | docsis ]

no cable upstream n scheduling type [ ugs | rtps ] mode [ llq | docsis ]

�V���^�b�N�X�̐���

n

�A�b�v�X�g���[�� �|�[�g���w�肵�܂��B�L��Ȓl�́A�P�[�u�� �C���^�[�t�F�C�X ���C�� �J�[�h�̍ŏ��̃A�b�v�X�g���[�� �|�[�g�̏ꍇ�A0 ����n�܂�܂��B

scheduling

�X�P�W���[�� �I�v�V�������C�l�[�u���ɂ��܂��B

type

UGS �܂��� rtPS ���w�肵�܂��B

ugs

UGS �̃X�P�W���[�����O���w�肵�܂��B

rtps

rtPS �̃X�P�W���[�����O���w�肵�܂��B

mode

�p�P�b�g�x�[�X�� LLQ �X�P�W���[�����O�܂��� TDM �x�[�X�� DOCSIS �X�P�W���[�����O���w�肵�܂��B

llq

LLQ �X�P�W���[�����O���w�肵�܂��B

docsis

DOCSIS �X�P�W���[�����O���w�肵�܂��B

�R�}���h�̃f�t�H���g�ݒ�

�f�t�H���g�� docsis �����ł��B

�R�}���h ���[�h

�C���^�[�t�F�C�X �R���t�B�M�����[�V�����i�P�[�u�� �C���^�[�t�F�C�X�̂݁j

�R�}���h����

�����[�X

�ύX

12.3(13(BC)

���̃R�}���h�������܂����B

�g�p��̃K�C�h���C��

�A�b�v�X�g���[�� �X�P�W���[�� ���[�h�̐ݒ��@ ���Q�Ƃ��Ă��������B

ugs �A rtps �A llq �A docsis �̔C�ӂ̑g�ݍ��킹���g�p�ł��܂��B

���̐��񎖍��ɒ��ӂ��Ă��������B

・ ������������m�ۂ���ɂ́ACAC ���C�l�[�u���ɂ���K�v������܂��BLLQ �I�v�V�������C�l�[�u���ɂ���ƁA�A�b�v�X�g���[�� �p�X����ʂ̃R�[���ł����ς��ɂȂ��Ďg���Ȃ��Ȃ�A���e�ł��Ȃ������i���ɂȂ��Ă��܂��܂��BCAC ���g���ăR�[�����𐧌����A�����i�������e�ł�����̂ɂ���K�v������܂��B�܂��A�����g���t�B�b�N�ȊO�̃g���t�B�b�N���m�ۂ���K�v������܂��B
・ CAC ���C�l�[�u���ɂ��Ă��Ȃ��ꍇ�ł��A���̌Ăяo�����ɒB����ƃf�t�H���g�iDOCSIS�j�̃X�P�W���[�����O ���[�h���g���t�B�b�N���u���b�N���܂��B

��

���ɁACisco CMTS �C���^�[�t�F�C�X�̃A�b�v�X�g���[�� �|�[�g 4 �� UGS �T�[�r�X�ɑ΂��� LLQ �^�C�v�i�p�P�b�g�x�[�X�j�X�P�W���[�����O���C�l�[�u���ɂ����������܂��B

Router(config-if)# cable upstream 4 scheduling type ugs mode llq

���ɁACisco CMTS �C���^�[�t�F�C�X�̃A�b�v�X�g���[�� �|�[�g 4 �� rtPS �T�[�r�X�ɑ΂��� DICSUS�iTDM �x�[�X�j�X�P�W���[�����O���C�l�[�u���ɂ����������܂��B

Router(config-if)# cable upstream 4 scheduling type rtps mode docsis

�֘A�R�}���h

�R�}���h

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show interface cable mac-scheduler

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