8-2
Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter 8
Network Optimization Commands
Identifying the AXSM Models
Identifying the AXSM Models
The model number of an AXSM identifies the line speed, line count, and number of bays (see
Table 8-1
.)
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 second in bay 2 (lower slot). 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, Rel 2.0.
Connection Capacities of the AXSM
The SVC and SPVC connection capacities for the front card, back card, and physical lines appear in
Table 8-2
and
Table 8-3
. The capacity of a single AXSM card is greater than that of the node itself.
Nevertheless, the tables provide these maximums when you plan the use of commands such as
addrscprtn, addcon, and any other command where you may want to know the capacity of the
configured item to support connections.
Table 8-1
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
1–2
1–2
AXSM-16-155
OC-3
1–8
1–2
AXSM-16-T3E3
T3, E3
1–8
1–2
Table 8-2
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