topic Re: B-Series with multiple ports in Scripting

B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 04:25:37 GMT

I have a python script that I’m using for B-series switches to configure multiple ports at the same time.

#@METADATASTART
#@ScriptDescription "Change port from static to NAC".
#@DetailDescriptionStart
##############################################################################
#
#Purpose: "Change port from static to NAC".
#
# Version : 1.0
#
# This script deletes selected ports from all vlans, sets "display-string" and
# "description-string" to "NAC_Port". Finally, the configuration is saved.
##############################################################################
#@DetailDescriptionEnd
#
#@MetaDataEnd
import re
import commands

def main():

if "port" in emc_vars:
ports = emc_vars["port"]
else:
print "Please select at least one PORT if you start the script"
return 0

cli_result = emc_cli.send("clear port vlan " + ports)

main()

However, I get the following output:

deerl1sw006(su)->clear port vlan ge.1.7,ge.1.8
Invalid Port in [port-string].

The B-Series switch needs to use ; instead of , to separate interfaces. Is there anyway to fix this?

Chuck

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 04:48:37 GMT

I tried to change ports (string) to a list using this:

ports_list = ports.split()
for x in ports_list:
cli_result = emc_cli.send("clear port vlan " + x)

I get the same error.

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 07:23:31 GMT

Hello Chuck,

try this:

#@METADATASTART
#@ScriptDescription "Change port from static to NAC".
#@DetailDescriptionStart
##############################################################################
#
#Purpose: "Change port from static to NAC".
#
# Version : 1.0
#
# This script deletes selected ports from all vlans, sets "display-string" and
# "description-string" to "NAC_Port".  Finally, the configuration is saved.
##############################################################################
#@DetailDescriptionEnd
#
#@MetaDataEnd
import re
import commands

def main():

    if "port" in emc_vars:
        ports = emc_vars["port"].split(",") #create a list with all ports
    else:
        print "Please select at least one PORT if you start the script"
        return 0

    portcounter = 0
    for port in ports: #walk through the list
        if portcounter == 0:
            portstring = port
        else:
            portstring = portstring + ";" + port #fill in the separator you need
        portcounter += 1

    cli_result = emc_cli.send("clear port vlan " + portstring)  

main()

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 07:42:56 GMT

Thanks so Much!

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 22:18:45 GMT

Trying to further refine this by creating functions, but the below doesn’t work.

import re
import commands

def(port_list):
if "port" in emc_vars:
ports = emc_vars["port"].split(",") #create a list with all ports
else:
print "Please select at least one PORT if you start the script"
return 0

portcounter = 0
for port in ports: #walk through the list
if portcounter == 0:
portstring = port
else:
portstring = portstring + ";" + port #fill in the separator you need
portcounter += 1

def main():

cli_result = emc_cli.send("clear port vlan " + portstring)
cli_result = emc_cli.send("set port alias " + portstring + " NAC")
cli_result = emc_cli.send("set macauthentication port enable " + portstring)
cli_result = emc_cli.send("set multiauth port mode auth-reqd " + portstring)
cli_result = emc_cli.send("set multiauth port numusers 4 " + portstring)
cli_result = emc_cli.send("set pwa portcontrol enable " + portstring)
cli_result = emc_cli.send("save config")

port_list()
main()

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 22:24:21 GMT

Hello Cuck,

what isn’t working?

Error message?

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 22:34:38 GMT

The code you posted is working fine. I am trying to create a function out of the section that creates a list of all ports and then call that function.

Error: SyntaxError: ("no viable alternative at input '('", ('<string>', 19, 3, 'def(port_list):\n'))

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 22:52:47 GMT

Here is the error:

“def(port_list)” should be: “def port_list():”

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 23:12:27 GMT

Thanks! A bit embarrassed I missed something so easy. However, now I’m getting this:

Traceback (most recent call last):

File "<string>", line 45, in <module>

File "<string>", line 36, in main

NameError: global name 'portstring' is not defined

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 23:17:00 GMT

Hello Chuck,

post your complete code, or post with line numbers, please. So we can see what lines are the problem.

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 23:21:53 GMT

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 23:33:48 GMT

Not nice (and not tested) but only to show you how functions and variables works together:

import re
import commands


def writeConfig(my_portstring):

    cli_result = emc_cli.send("clear port vlan " + my_portstring)  
    cli_result = emc_cli.send("set port alias " + my_portstring + " NAC")
    cli_result = emc_cli.send("set macauthentication port enable " + my_portstring)
    cli_result = emc_cli.send("set multiauth port mode auth-reqd " + my_portstring)
    cli_result = emc_cli.send("set multiauth port numusers 4 " + my_portstring)
    cli_result = emc_cli.send("set pwa portcontrol enable " + my_portstring)
    cli_result = emc_cli.send("save config")

def port_list():
    if "port" in emc_vars:
        ports = emc_vars["port"].split(",") #create a list with all ports
    else:
        print "Please select at least one PORT if you start the script"
        return 0

    portcounter = 0
    for port in ports: #walk through the list
        if portcounter == 0:
            portstring = port
        else:
            portstring = portstring + ";" + port #fill in the separator you need
        portcounter += 1

	return portstring

def main():

	my_portstring = port_list()
	writeConfig(my_portstring)

main()

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 23:39:30 GMT

Ah, got it! This works!

Re: B-Series with multiple ports

cslayton — Fri, 04 Dec 2020 23:48:57 GMT

Stephan, sorry to bother again, but this only uses the first port (if I selected multiple ports).

Chuck

Re: B-Series with multiple ports

StephanH — Fri, 04 Dec 2020 23:58:41 GMT

Ah yes I see it. Change the insert for the line “return portsting” in that way that it is inline with word for.

The line insertion has to be the same. In the moment the return ends after the for loops run once.

Re: B-Series with multiple ports

cslayton — Sat, 05 Dec 2020 00:06:08 GMT

Once again, you nailed it!