9-2
Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter9 Troubleshooting Commands
Identifying the AXSM Models
Identifying the AXSM Models
The model number of an AXSM identifies the line s peed, line count, and number of bays (see Ta ble 9- 1.)
Note that the number of lines applies to an individual back card, so the total number of lines supported
by the front card equals the highest line number times the number of bays. The OC-48 card
AXSM-1-2488 has the lowest number of lines—one. The highest number of lines exist on the
AXSM-16-155 and AXSM-16-T3E3—16, as the name indicates.
The MGX 8850 node use the concept of a bay. The bay refers to the upper or lower location of a
single-height card. (The switch has a double-height card cage, so a single-height back card necessarily
occupies either an upper or lower position.)
The T3/E3, OC-3, and OC-12 versions of the AXSM can have two back cards, one in bay 1 (upper
location of the back slot) and the se cond in b ay 2 (lo wer slo t). The MGX-AXSM-1 -2488 (OC-48 AXSM)
can have a back card in bay 1 only. For further descriptions and illustrations of the card sets, refer to
Cisco MGX 8850 Hardware Installation, Release 2.1.
Identifying Physical and Logical Elements
The Private Network-to-Network Interface (PNNI) control protocol and t he ser v ice modules use
different formats to identify the sam e entity. For example, the format of a logical po r t th at y ou en ter o n
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 the y corre spo nd to each other. The parallel actions of
configuring or displaying logi cal el ements on different cards is br oa dl y ill u s tr ate d in t he Cisco
MGX 8850 Routing Switch Software Configuration Guide, Release 2.0.
Apart from the way PNNI and t h e l ower l evels o f lo gi c i de nt if y th e s a me ele m en t, th e sequence of
commands also needs explanatio n. When you configure logical port s—for just one example—you must
complete certain tasks on the AXSM CLI before or after relate d PNNI tasks. For certain comm ands, this
manual lists prerequisite commands or tasks. For mo re details on the sequence of tasks, refer to the Ci s co
MGX 8850 Routing Switch Softwa r e Co nf igu r ati on Gui de, Release 2.0, for more detai ls o f t his seq ue nce.
AXSM Format
On a service module, you identify the fol low when you provision t he capabilities of t h e ca rd:
•Slot
•Bay
Table9-1 Valid Line Numbers and Number of Bays for AXSM Card Types
Front Card Speed Lines Bays
AXSM-1-2488 OC-48 1 1
AXSM-4-622 OC-12 1–41–2
AXSM-16-155 OC-3 1–81–2
AXSM-16-T3E3 T3, E3 1–81–2
AXSM-2-622-E OC12 1 1–2
AXSM-8-155-E OC3 1–41–2
AXSM-16-T3E3-E T3, E3 1–81–2