cnfrsrc

Parameter (cnfrsrc)

Description

minvsilcns

The minimum number of LCNs guaranteed for this partition. The VSI controller

 

guarantees at least this many connection endpoints in the partition, provided that

 

there are sufficient free LCNs in the common pool to satisfy the request at the time

 

the partition is added. When a new partition is added or the value is increased, it

 

may be that existing connections have depleted the common pool so that there are

 

not enough free LCNs to satisfy the request. The BXM gives priority to the request

 

when LCNs are freed. The net effect is that the partition may not receive all the

 

guaranteed LCNs (min LCNs) until other LCNs are returned to the common pool.

 

This value may not be decreased dynamically. All partitions in the same port group

 

must be deleted first and reconfigured in order to reduce this value.

 

The value may be increased dynamically. However, this may cause the “deficit”

 

condition described above.

 

The command line interface warns the user when the action is invalid, except for the

 

“deficit” condition.

 

To avoid this deficit condition which could occur with maximum LCN usage by a

 

partition or partitions, it is recommended that all partitions be configured ahead of

 

time before adding connections. Also, it is recommended that all partitions be

 

configured before adding a VSI controller via the addshelf command.

 

 

maxvsilcns

The total number of LCNs the partition is allowed for setting up connections. The

 

min LCNs is included in this calculation. If max LCNs equals min LCNs, then the

 

max LCNs are guaranteed for the partition.

 

Otherwise, (max - min) LCNs are allocated from the common pool on a FIFO basis.

 

If the common pool is exhausted, new connection setup requests will be rejected

 

for the partition, even though the max LCNs has not been reached.

 

This value may be increased dynamically when there are enough unallocated LCNs

 

in the port group to satisfy the increase.

 

The value may not be decreased dynamically. All partitions in the same port group

 

must be deleted first and reconfigured in order to reduce this value.

 

Different types of BXM cards support different maximums. If you enter a value

 

greater than the allowed maximum, a message is displayed with the allowable

 

maximum.

 

 

vsistartvpi

By default the TSC (e.g, 7200 or 7500 series router) will use either a starting VSI

 

VPI of 1 or 2 for tag switching, whichever is available. If both are available, a

 

starting VSI VPI of 1 is used. The VPI range should be 2-15 on a BPX 8620 VSI.

 

The VSI range for tag switching on the BPX 8620 is configured as a VSI partition,

 

usually VSI partition number 1. VSI VPI 1 is reserved for AutoRoute PVCs, so the

 

VSI partition for tag switching should start at VPI 2. If VPI 2 is not to be used, the

 

tag switching VPI interface configuration command can be used on the TSC to

 

override the defaults

 

 

vsiendvpi

Two VPIs are sufficient for the current release, although it may be advisable to

 

reserve a larger range of VPIs for later expansion, for example, VPIs 2-15.

 

 

vsiminbw

The minimum port bandwidth allocated to this partition in cells/sec. (Multiply by

 

400 based on 55 bytes per ATM cell to get approximate bits/sec.)

 

 

vsimaxbw

The maximum port bandwidth allocated to this partition. This value is used for VSI

 

QBIN bandwidth scaling.

 

 

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Cisco Systems 8600 Series manual Cnfrsrc Parameter cnfrsrc Description