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Beta Draft Confidential
2-14
1/19/05
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
About ATM Logical Ports
VPs and VCs
The total number of VCCs, MPTs, and VPCs supported varies because of dynamic
address allocation; however, the maximum number supported is 15360 VCCs/VPCs
and 1024 MPTs. With dynamic address allocation, VPI bits are no longer dedicated
for use with VPCs.
Use
as a guide to set the VPI/VCI values on a CBX 500 or CBX 3500. Use
as a guide to set the VPI/VCI values on a GX 550.
Note – When you configure an OPTimum trunk or virtual UNI between two endpoints,
the logical ports must match the VPI of the VPC that provides the connectivity between
the two switches. The VPI range for the VPI/VCI valid bits setting for each endpoint
must accommodate this VPI.
Table 2-3.
Number of Valid Bits in VPI/VCI for CBX 500 or CBX 3500
If Number of Valid
VPI Bits =
a
Valid VPI Range
Is
If Number of Valid
VCI Bits =
Valid VCI Range
Is
b
0
0
0
Not Valid
1
0 - 1
1
Not Valid
2
0 - 3
2
Not Valid
3
0 - 7
3
Not Valid
4
0 - 15
4
Not Valid
5
0 - 31
5
Not Valid
6
0 - 63
6
32 - 63
7
0 - 127
7
32 - 127
8
0 - 255
8
32 - 255
Not Valid
–
9
32 - 511
Not Valid
–
10
32 - 1023
Not Valid
–
11
32 - 2047
Not Valid
–
12
32 - 4095
Not Valid
–
13
32 - 8191
Not Valid
–
14
32 - 16383
a
Only 8 bits of the VPI are available on UNI type interfaces per ATM Forum standards.
b
VCI 0 - 31 are reserved and should not be used for user traffic per ATM Forum standards.
Содержание CBX 3500
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