Specifications

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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 3 Provisioning PXM1E Communication Links
General PXM1E Configuration Procedures
Table 3-7 Parameters for addimaport Command
Parameter Description
ifNum Specify a port number for the new IMA port. The port number must be available (not
already configured) and in the range of 1 to 31. To view the configured port numbers,
use the dspports command.
group Enter the group number of an existing IMA group. To display a list of IMA groups,
enter the dspimagrps command.
guaranteed
Rate
Use one of the following formulas to compute the guaranteed minimum rate:
• For a T1-based IMA group, the rate is as follows:
from 50 through N * (3622 * (M-1)/M * 2048/2049)
• For an E1-based IMA group, the rate is as follows:
from 50 through N * (4528 * (M-1)/M * 2048/2049)
N is the number of IMA links in the IMA group, and M is the IMA group frame length.
Note On the PXM1E, the guaranteed minimum bandwidth rate does not have to be
the same as maxRate.
maxRate Use one of the following formulas to compute the maximum rate:
• For a T1-based IMA group the rate is as follows:
from 50 through N * (3622 * (M-1)/M * 2048/2049)
• For an E1-based IMA group, the rate is:
from 50 through N * (4528 * (M-1)/M * 2048/2049)
N is the number of IMA links in the IMA group, and M is the IMA group frame length.
Note On the PXM1E, the maxRate does not have to be the same as guaranteed
minimum bandwidth rate.
sctID Enter a registered PXM1E port SCT number. For more information on selecting SCTs,
refer to Table 7-1. See the Cisco WAN Manager User’s Guide, Release 15, for
information how to create a new SCT.
ifType
Enter a number that indicates the interface type as follows:
1—UNI, one UNI port allowed per physical line
2—NNI, one NNI port allowed per physical line
3—VNNI, multiple virtual NNI ports supported over one VPI
4—VUNI, multiple virtual UNI ports supported over one VPI
5—EVUNI, multiple enhanced virtual UNI ports supported over a range of VPIs
6—EVNNI, multiple enhanced virtual NNI ports supported over a range of VPIs