Cisco BPX 8650, Installation And Configuration Manual

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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 23 Configuring BXM Virtual Switch Interface
VSI Master and Slave Redundancy
To display VSI ILMI functionality on interfaces, use the dspvsipartcnf command to display the VSI
ILMI status (whether enabled or not) for various VSI partitions on the interface.
VSIs and Virtual Trunking
The VSI virtual trunking feature lets you use BXM virtual trunks as VSI interfaces. Using this capability,
VSI master controllers can terminate connections on virtual trunk interfaces.
Activate and configure VSI resources on a virtual trunk using the same commands you use to configure
physical interfaces (for example,
cnfrsrc , dsprsrc ). The syntax used to identify a trunk has an optional
virtual trunk identifier that you append to the slot and port information to identify virtual trunk
interfaces.
A virtual trunk is a VPC that terminates at each end on the switch port. Each virtual trunk can contain
up to 64,000 VCCs, but it might not contain any VPCs.
Virtual trunk interfaces cannot be shared between VSI and Automatic Routing Management. Therefore,
configuring a trunk as a VSI interface prevents you from adding the trunk as an Automatic Routing
Management trunk. Similarly, a trunk that has been added to the Automatic Routing Management
topology cannot be configured as a VSI interface.
Virtual trunks on the BPX use a single configurable VPI. Because virtual trunk interfaces are dedicated
to VSI, the entire range of VCIs is available to the VSI controllers.
The virtual trunking feature introduces the concept of defining multiple trunks within a single trunk port
interface. This creates a fan-out capability on the trunk card.
Once VSI is enabled on the virtual trunk, Automatic Routing Management does not include this trunk in
its route selection process.
To configure a VSI virtual trunk, use the following procedure.
Step 1
Activate the virtual trunk by using the command
uptrk <slot.port.vtrunk>
Step 2
Set up VPI value and trunk parameters by using the command
cnftrk <slot.port.vtrunk>
Step 3
Enable VSI partition by using the command
cnfrsrc <slot.port.vtrunk>
VSI Master and Slave Redundancy
The ability to have multiple VSI controllers is referred to as VSI master redundanc
y.
Master redundancy
enables multiple VSI masters to control the same partition.
You add a redundant controller by using the addshelf command, the same way you add an interface
(feeder) shelf, except that you specify a partition that is already in use by another controller.