2-3
Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter 2
Shelf Management Commands
Identifying Physical and Logical Elements
Identifying Physical and Logical Elements
The Private Network-to-Network Interface (PNNI) control protocol and the service modules use
different formats to identify the same entity. For example, the format of a logical port that you enter on
an AXSM is different from the format you would enter on the PXM45. This section describes these
formats in the PNNI and AXSM contexts and how they correspond to each other. The parallel actions of
configuring or displaying logical elements on different cards is broadly illustrated in the Cisco
MGX 8850 Routing Switch Software Configuration Guide, Release 2.0.
Apart from the way PNNI and the lower levels of logic identify the same element, the sequence of
commands also needs explanation. When you configure logical ports—for just one example—you must
complete certain tasks on the AXSM CLI before or after related PNNI tasks. For certain commands, this
manual lists prerequisite commands or tasks. For more details on the sequence of tasks, refer to the Cisco
MGX 8850 Routing Switch Software Configuration Guide, Release 2.0, for more details of this sequence.
AXSM Format
On a service module, you identify the follow when you provision the capabilities of the card:
•
Slot
•
Bay
•
Line
•
Logical port
•
Port group
•
Resource partition
Table 2-2
Maximum Connections by Connection Type and Front Card
Front Card
SVC
SPVC
AXSM-1-2488
128 K
64 K
AXSM-4-622
128 K
64 K
AXSM-16-155
128 K
64 K
AXSM-16-T3E3
128 K
64 K
Table 2-3
Maximum Connections on Back Cards and Lines
Card Type
Back Card Maximum
Physical Line Maximum
OC-48c
128 K
64 K
OC-12c
64 K
32 K
OC-3c
64 K
32 K
T3
64 K
64 K
E3
64 K
64 K
