Network topology:
+----+ +-------+
| PC | --> | Cisco |
+----+ +-------+
There’s no internet connection, and no router. Surely the only way to admin the switch would be use the console cable?
Connecting to a another device, a 2801 with this cable, confirms that the Ubuntu system and cable are functioning:
TYPE
021B8 Onboard USBe pool20000 VPM b 0X0001A800 Card
Iory Requirements are
"UNKNOWN", you may be using an unsupported
PMem allocstrictedure by tct to restrictions as sof the Cal Computer SoftRestric c 170 West Tasman Drivesec. 252.227-7013.
San Jose, California(C2801-A SOFTWARE (fc2)cal Suppco Systems, Inc1 breturninFFFFFFFFF1" of sL API Ge4_Drift=.FFF93EE70,280,L-?)
PRST-VBL DET Lock - ok
P DET Compare Next - NO ift=FFFFFFFF.FF= NTPv4_FFF93EF1
PRST- Next - 4_Drift=FFFFFFFF.FFF93EF1 > RERST-VBL DET Cacet - ok returninNext - NDET CompT Compare Next BOOT_COUNT=48 >k returning "prst-dbg=0VBL API Get (pr
PRST-VBv4_DrifEF1
PRET Comp8
PRST-Compare Next - 0x3FF
ng "prstBL DET CO prst-FFFFFFF.Next - = REBOOT-VBL D- NO pr3
PRST-VBL DET Cache uI Get -
PRST- added:
arting
PRST-VBPRST-VBLilesys ays added: tftp
PRST-VBL MED Init compleded: hid-VBL MEDs addedBL MED Ilash
sys adde
Looks like I have the correct cable to connect with a Cisco Catalyst 2960s:
nickout@mordor:~$
nickout@mordor:~$ ls /dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A914IGBX-if00-port0
/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A914IGBX-if00-port0
nickout@mordor:~$
nickout@mordor:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 003: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
Bus 002 Device 004: ID 0d62:4141 Darfon Electronics Corp. HP 320M USB Optical Mouse
Bus 002 Device 005: ID 17ef:6099 Lenovo Lenovo Traditional USB Keyboard
nickout@mordor:~$
nickout@mordor:~$ ls /dev/ttyUSB0
/dev/ttyUSB0
nickout@mordor:~$
However, when I run “screen” I just get a blank screen with no prompt, even after pressing enter a few times. How to best connect with this switch?
Running ‘screen’ by itself:
nickout@mordor:~$
nickout@mordor:~$ screen /dev/ttyUSB0
[screen is terminating]
nickout@mordor:~$
From Google, trying also:
sudo screen /dev/ttyUSB0 115200
Which just gives a blank screen. Even when the switch is powercycled.
using Putty/plink:
Cisco IOS Software-UNIVERSALK9-M), Version 1EASE SOFTWARE: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Fri 16-Decprod_rel_team
Inishfs...
Using driver version 4 for mefs[4]: 12 fiories
mifs[4]: Total byte36
mifs[4]: Bytes used : 7562: Initialization complete.
mifs[5]: 3870720
1024
However, it stalls at:
512K bytes oration memoryrnet MAC Addr8:75:56:D7:C2 : 341-0393-02
Mot7VD
Power suDaughterboard assembly number : 73-11ial number : FOC163714CP
System seOC1638X0ZW
Top Assembly Part Number : 800-30945-03
Top Assembly Revision Number ion ID Code Number 0
Hardware Board Revision SW Version ----------6 C2960S-UNIVEress RETURN toead env variabOOT_LEVEL =
*Jan 2 00:00:ICENSE_IMAGE_APPLICATION-6-LICENSE_LEVEL: c2960s_lanbasen1, changed state to down
*Jan 2 00:00:2astEthernet0, changed state -EXTENDED_SYSID: Extended Syr type vlan
*4-STACK_LINK_Cort 1 Switch 1 has changed to state DOWN
*Jan 2 00:00:56.009: %STACKMGR-4-STACK_LINK_CHANGE: Stach 1 has chang:00:56.533: %STACKMGR-5-MASTER_READY: Master Switch 1 is READY
*Jan RT: System resSupport: http://www.cisco.comCopyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Fri 16-Dec-16 20:58 by prodOLE-6-MEDIA_RJdia-type is RJ Interface FastEthernet0, chrotocol on Internet0, change
