CAB-OCTAL-ASYNC cables use a 68-pin connector and breakout cable
and provide eight RJ-45 rolled cable asynchronous ports on each
68-pin connector. You can connect each RJ-45 rolled cable
asynchronous port to the console or Aux port of a device. The
NM-16A or NM-32A high-density asynchronous network modules
available for the 2600 and 3600 Series Routers can use this cable.
For more information on cabling, refer to Serial Cable Guide and
Cabling Guide for RJ-45 Console and AUX Ports.
The asynchronous ports from
the 68-pin connector are data terminal equipment (DTE)
devices. DTE to DTE devices require a rolled (null modem)
cable. DTE to data circuit-terminating equipment (DCE)
devices require a straight-through cable. Since the
CAB-OCTAL-ASYNC cable is itself rolled, you can connect
each cable directly to the console ports of devices with
RJ-45 interfaces. However, if the console port of the
device to which you are connecting is a 25-pin interface
(DCE), use the RJ-45 to 25-pin adapter (product number
CAB-5MODCM=) marked "Modem" (to reverse the "roll") to
complete the connection. Remember, if you need to
increase the reach of the CAB-OCTAL-ASYNC cable, use a
straight-through RJ-45 cable for the extension.
Port types for console
and auxiliary ports on Cisco routers and switches