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- Description
- Specifications
The NM-32A adds 32 EIA/TIA-232 (formerly RS-232) DTE serial lines to a Cisco router, each running at up to 134.4 kbps, and every line can run 134 kbps async while the rest do the same. A common job is out-of-band console access to other devices from a comm/terminal server.
Chassis limits matter here: a Cisco 3640 holds three NM-32A modules, while a Cisco 3620 or a Cisco 2600 holds one. Platform support also covers the Cisco 2600XM, 3631, 3660, 2691, 3725 and 3745.
On a Cisco 3600, Cisco IOS reserves 32 line numbers per slot for this module (slot x 32 + unit + 1), where earlier releases reserved 16, and the aux port moves to line 65 on the 2600 and 3620 or line 129 on the 3640.
Cabling is 68-pin OCTAL: CAB-OCTAL-ASYNC= or CAB-OCTAL-MODEM=, matching the Cisco 2509 cables. The 16-line NM-16A takes the same cables, such as the CAB-OCTAL-ASYNC octal cable. Further modules are in Cisco interface cards.
| Part number | NM-32A |
| Type | Cisco 32-port asynchronous network module |
| Serial lines | 32 |
| Electrical standard | EIA/TIA-232 (RS-232) DTE |
| Line speed | Up to 134.4 kbps, all lines at once |
| Connector | 68-pin OCTAL |
| Cable options | CAB-OCTAL-ASYNC= or CAB-OCTAL-MODEM= |
| Chassis limit | 3 in a Cisco 3640; 1 in a Cisco 3620; 1 in a Cisco 2600 |
| IOS line numbers | 32 per slot on Cisco 3600 |
| 16-line sibling | NM-16A |
| Compatible with | Cisco 2600, 2600XM, 3620, 3631, 3640, 3660, 2691, 3725, 3745 |