get_facts traceback on IOS-XE device

[clay584]

When trying to do a get_facts on an IOS-XE device, I am getting a traceback.

>>> import napalm
>>> driver = napalm.get_network_driver('ios')
>>> device = driver(hostname='router1', username='ccurtis', password='Password1')
>>> device.open()
>>> device.get_facts()
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/napalm_ios/ios.py", line 513, in get_facts
    _, os_version = line.split("Cisco IOS Software, ")
ValueError: need more than 1 value to unpack
>>> 

It is due to the fact that I am running Denali code (16.3.1a) on this device for MPLS support. This is what I did to fix it, but you can probably patch it in a more graceful manner as opposed to ignoring an exception.

if re.search(r"Cisco IOS Software", line):
    try:
        _, os_version = line.split("Cisco IOS Software, ")
    except:
        pass
    try:
        _, os_version = line.split("Cisco IOS Software ")
    except:
        pass
    os_version = os_version.strip()

show version output:

Cisco IOS Software [Denali], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.3.1a, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Thu 29-Sep-16 22:08 by mcpre    

Cisco IOS-XE software, Copyright (c) 2005-2016 by cisco Systems, Inc.
All rights reserved.  Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0.  The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.  For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.    

ROM: IOS-XE ROMMON
BOOTLDR: CAT3K_CAA Boot Loader (CAT3K_CAA-HBOOT-M) Version 3.78, RELEASE SOFTWARE (P)    

fauhousing3850-01 uptime is 5 days, 4 hours, 13 minutes
Uptime for this control processor is 5 days, 4 hours, 15 minutes
System returned to ROM by reload at 14:27:42 UTC Wed Oct 12 2016
System image file is "flash:cat3k_caa-universalk9.16.03.01a.SPA.bin"
Last reload reason: Reload Command    

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Technology Package License Information:     

-----------------------------------------------------------------
Technology-package                   Technology-package
Current             Type             Next reboot  
------------------------------------------------------------------
ipservicesk9        Permanent        ipservicesk9    

cisco WS-C3850-12XS (MIPS) processor (revision K0) with 866081K/6147K bytes of memory.
Processor board ID FOC2028U0P2
1 Virtual Ethernet interface
16 Ten Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
253984K bytes of Crash Files at crashinfo:.
3431232K bytes of Flash at flash:.
0K bytes of  at webui:.    

Base Ethernet MAC Address          : 00:a2:89:56:f1:80
Motherboard Assembly Number        : 73-16295-06
Motherboard Serial Number          : FOC20276N1P
Model Revision Number              : K0
Motherboard Revision Number        : A0
Model Number                       : WS-C3850-12XS
System Serial Number               : FOC2029U0K2    

Switch Ports Model              SW Version        SW Image              Mode   
------ ----- -----              ----------        ----------            ----   
*    1 16    WS-C3850-12XS      16.3.1            CAT3K_CAA-UNIVERSALK9 BUNDLE     

Configuration register is 0x102

After the fix:

>>> import napalm
>>> driver = napalm.get_network_driver('ios')
>>> device = driver(hostname='router1', username='ccurtis', password='Password1')
>>> 
>>> device.open()
>>> device.get_facts()
{'os_version': u'[Denali], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.3.1a, RELEASE SOFTWARE (fc4)', 'uptime': 447060, 'interface_list': [u'Vlan1', u'GigabitEthernet0/0', u'Te1/0/1', u'Te1/0/2', u'Te1/0/3', u'Te1/0/4', u'Te1/0/5', u'Te1/0/6', u'Te1/0/7', u'Te1/0/8', u'Te1/0/9', u'Te1/0/10', u'Te1/0/11', u'Te1/0/12', u'Te1/1/1', u'Te1/1/2', u'Te1/1/3', u'Te1/1/4', u'Loopback0', u'Loopback112', u'Loopback122', u'Loopback132', u'Loopback142', u'Loopback152', u'Loopback162', u'Loopback182', u'Loopback192'], 'vendor': u'Cisco', 'serial_number': u'FOC2029U0K2', 'model': u'WS-C3850-12XS', 'hostname': u'router1', 'fqdn': u'router1.xxx.edu'}
>>> quit()

[ktbyers]

Okay will try to look at it. Should be easy to fix.

[ktbyers]

@clay584 Please test the fix referenced above.

[clay584]

It fixed it. Thanks Kirk! BTW, your python class is paying off. It was a very good primer for me. I am using napalm, ntc-ansible, and other bits to automate the deployment and operation of an MPLS network for a large university. Pretty cool stuff.

[ktbyers]

Nice...