25-12
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 25 Configuring BXM Virtual Trunks
General Procedure to Set Up a Trunk
Virtual Trunk Transmit Queuing
In the BXM, the egress cell traffic out a port is queued in 2 stages:
•
First they are queued per Virtual Interface (VI), each of which supports a virtual trunk.
•
Within each VI, the traffic is queued as per its normal OptiClass traffic type.
In other words, these types of traffic are queued separately:
These classes are all queued separately, and the overall queue depth of the virtual interface is the sum
of all the queue depths shared by all the available queues. Because each virtual trunk occupies one
virtual interface (VI), the overall queue depth available for the virtual trunk is that of its VI.
You do not directly configure the VI.
You use the cnftrkparm command to configure the queues within AutoRoute virtual trunks.
You use the cnfvsiif and cnfqbin commands to configure the queues within VSI virtual trunk VIs.
General Procedure to Set Up a Trunk
Before setting up a trunk, you must first finish setting up the nodes. Also, the front and back cards that
support the proposed line type and communication technology must reside in the slot intended for the
trunk.
The Ports and Trunks feature allows you to configure port, routing trunk and feeder trunk interfaces
simultaneously on a slot containing a BXM or UXM card. For example, you can up port 1 on a BXM
slot as a trunk interface while also upping port 2 as a line interface. For BXM and UXM cards, you do
not need to upgrade the firmware.
Table 25-3 Virtual Trunk Traffic Types
AutoRoute
voice
time-stamped
non time-stamped
high-priority
bursty data A (bdataA)
bursty data B (bdataB)
cbr
vbr
abr
VSI
MPLS Classes of Service
UBR
PNNI traffic
Содержание BPX 8600 Series
Страница 43: ...P A R T 1 The BPX Switch ...
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Страница 151: ...P A R T 2 Installation ...
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Страница 261: ...P A R T 3 Initial Configuration and Network Management ...
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Страница 291: ...P A R T 4 Configuring Connections ...
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Страница 481: ...P A R T 5 Troubleshooting and Maintenance ...
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Страница 531: ...P A R T 6 BPX Specifications ...
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Страница 563: ...P A R T 7 Appendices ...
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Страница 624: ...Glossary 24 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...
Страница 630: ...Index 6 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...