Cisco BPX 8600 Series, Руководство по установке и настройке

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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 27 Configuring BME Multicasting
Hot Standby Backup
Hot Standby Backup
BME cards can be set up to provide hot standby backup. Both cards are set up with port 1 connected to
port 2 on the same card to provide the multicasting connection, transmit to receive and receive to
transmit. There is no Y-cabling connection between the cards, and they do not have to be adjacent to
each other.
The addyred command is used to enable hot standby backup between the cards. The addyred command
must be used before any connections are added to the active card. The command will be rejected if used
after connections have been added to the active card.
Configuration
If the multicast tree has a large number of leaf connections, for example, 3000, then the cnfportq
command should be used to configure the Qbin threshold to be greater than needed for half the number
of leaves so as to assure that the multicast group will have no discards. The Qbin default depth is about
1200 cells.
The following is a Qbin example using the cnfportq command:
j4b VT SuperUser ~ BPX 15 9.3 March 24 2000 16:59 PST
Port: 3.2 [ACTIVE ]
Interface: LM-BXM
Type: NNI
Speed: 1412830 (cps)
SVC Queue Pool Size: 0
CBR Queue Depth: 1200
CBR Queue CLP High Threshold: 80%
CBR Queue CLP Low Threshold: 60%
CBR Queue EFCI Threshold: 80%
VBR Queue Depth: 10000 UBR/ABR Queue Depth: 40000
VBR Queue CLP High Threshold: 80% UBR/ABR Queue CLP High Threshold: 80%
VBR Queue CLP Low Threshold: 60% UBR/ABR Queue CLP Low Threshold: 60%
VBR Queue EFCI Threshold: 80% UBR/ABR Queue EFCI Threshold: 30%
This Command: cnfportq 3.2
SVC Queue Pool Size [0]:
Virtual Terminal CD