Junos EX Switch last port flap
October 24, 2010 Posted by mitch | juniper, junos, script | 0 Comments
Here is a little script I wrote that logs into a Juniper EX switch and grabs the port status of all interfaces in a down state, then checks to see their "LastFlap" state... which translates into how long the port has been in a down state.
This script depends on a wrapper for SSH (ssh.py) which I grabbed here: http://commandline.org.uk/python/sftp-python-really-simple-ssh/
#!/usr/bin/env python
##
## Mitch - May 17th 2010
## This script logs into a Juniper EX Switch, lists out ports, greps for downed
## ports, and then checks each to see how long they've been in a down state.
##
## This script logs into the switch with the provided username/password
##import re,sys,getpass,getopt
mesg = """ This script depends on python-paramiko please install it...."""
try:
import ssh
except:
print mesg
sys.exit(1)def getLastFlapped(port,sshconn):
'''Return the Date and Time of the Last time the port flapped'''
lastflapped = sshconn.execute('show interfaces %s | grep Last' % port)[0]
lastflapped = lastflapped.split(':',1)[1]
return lastflapped.strip()def main(outfile=None):
# get switch information
switch = raw_input("Switch to connect to: ")
username = raw_input("Username [%s]: " % getpass.getuser())
if username == None:
username = getpass.getuser()
password = getpass.getpass("Password: ")# connect to switch
try:
s = ssh.Connection(host = switch, username = username, password = password)
except:
print "There was an error connecting to %s." % switch
sys.exit(2)portList = []
# grab our list and get out
output = s.execute('show interfaces terse | grep down | except \.0 | grep ge-')
for port in output:
port = port.strip()
if port == '': continue
p = port.split()[0]
portList.append({'port': p, 'lastflapped': getLastFlapped(p, s)})
s.close()# process and write the output to a variable
display = "Ports currently down on switch %s: \n" % switch
for p in portList:
display = display + " %s\t: %s\n" % (p['port'],p['lastflapped'])
# Check to see if we are to write the output to a file
# or the screen
if outfile:
try:
f = open(outfile, 'w')
except:
print "Error... couldn't write to %s" % outfile
sys.exit(3)f.write(display)
f.close()
else:
print display
if __name__ == '__main__':
try:
opts, args = getopt.getopt(sys.argv[1:], "f:", ["file="])
except getopt.GetoptError, err:
print str(err)
sys.exit(1)for o, a in opts:
if o in ("-f", "--file"):
outfile = a
try:
main(outfile)
except:
main()
