Specifications

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Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Chapter 6 Managing PNNI Nodes and PNNI Routing
Managing PNNI Route and Link Selection
Replace pnportid with the port ID in the format slot[:subslot].port[:subport]. (This is the same format
that appears when you display ports with the dsppnport command.) For each class of service for which
you want to change the AW value, enter the appropriate option followed by the new value. For example,
the following command sets the AW for CBR calls over the link:
8850_LA.7.PXM.a > cnfpnni-intf 1:2.1:1 -awcbr 2000
To display the AWs assigned to a PNNI port, enter the dsppnni-intf command as follows:
8850_LA.7.PXM.a > dsppnni-intf 1:2.1:1
Physical port id: 1:2.1:1 Logical port id: 16848897
Aggr token.......... 0 AW-NRTVBR........... 5040
AW-CBR.............. 2000 AW-ABR.............. 5040
AW-RTVBR............ 5040 AW-UBR.............. 5040
Configuring the Bandwidth Overbooking Factor
The bandwidth overbooking factor represents the percentage of the actual available bandwidth that is
advertised for links as the available cell rate (ACR). The default overbooking factor is 100, and this
specifies that 100% of the actual available bandwidth should be advertised as the ACR. When the
overbooking factor is set below 100, a link is oversubscribed because the bandwidth booked for each
connection exceeds the configured bandwidth for the connection. When the overbooking factor is set
above 100, the link is undersubscribed because the bandwidth booked for a connection exceeds the
connection's configured bandwidth
.
Note For more information on the bandwidth overbooking factor, refer to the Cisco MGX and SES PNNI
Network Planning Guide.
To configure the bandwidth overbooking factor for a PNNI port, enter the cnfpnportcac command as
follows:
8850_LA.7.PXM.a > cnfpnportcac <pnportid> <service_catogory>
[-bookfactor <utilization-factor>]
Replace pnportid with the port ID in the format slot[:subslot].port[:subport]. (This is the same format
that appears when you display ports with the dsppnport command.) Replace service_catogory with the
ATM class of service for which you are defining the overbooking factor, and replace utilization-factor
with the new overbooking factor. For example:
8850_LA.7.PXM.a > cnfpnportcac 1:2.1:1 cbr -bookfactor 120
WARNING: New CAC parameters apply to existing connections also
To display the bandwidth overbooking factor for all classes of service, enter the dsppnportcac command
as shown in the following example:
8850_LA.7.PXM.a > dsppnportcac 1:2.1:1
cbr: rt-vbr: nrt-vbr: ubr: abr:
sig:
bookFactor: 120% 100% 100% 100% 100%
100%
maxBw: 100.0000% 100.0000% 100.0000% 100.0000% 100.0000%
100.0000%
minBw: 0.0000% 0.0000% 0.0000% 0.0000% 0.0000%
0.3473%