Hi, On Wed, Jan 13, 2016 at 08:56:28AM -0500, Eric Van Tol wrote: > I've searched and perhaps my Google-Fu is terrible, but I cannot find the > pinouts for the Cisco USB console anywhere. I would like to connect an ASR920 > to a serial console server that has RJ45 inputs. I've tried using a typical > USB-to-Serial adapter with the serial end connected to a DB9-to-RJ45 adapter, > but get no response from the console. Can someone point me in the right > direction for the pinouts so I can try to make my own cable?
I would assume that the USB port is intended to be connected to a host, and has the USB-to-serial circuitry inside (so the host sees a serial port) and you cannot connect another USB device to the ASR920. The documentation on cisco.com backs this... http://www.cisco.com/c/en/us/td/docs/routers/asr920/hardware/installation/guide/ASR920_HIG/hw_installation.html#pgfId-1281737 I find the decision to use a "Type A" USB port for this purely amazing, given that the USB spec explicitely forbids A-to-A cables, as that's just not how USB works (strictly host<->device and A<->B, always, if you have a host-to-host A-to-A cable it really has circuitry inside to make it look like a "device" to both hosts). Whoever designed this has been smoking interesting weed. OTOH, Fig. 3-23 suggests that there is a "real" USB host port (the "EIA Console Port") which might be able to drive a USB-to-serial, if it's the right now - if it can be used to connect a modem, it can be used to connect to a console server. But I'd assume that it only works with a Cisco Certified USB To Serial Cable, which is made by the Cisco Certified Optics Department and appropriately priced. gert -- USENET is *not* the non-clickable part of WWW! //www.muc.de/~gert/ Gert Doering - Munich, Germany [email protected] fax: +49-89-35655025 [email protected]
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