topic Create mLAG Port with XMC Python in Scripting

Create mLAG Port with XMC Python

cslayton — Thu, 15 Oct 2020 03:50:26 GMT

I’m writing a python script to create MLAG port. Since the config will vary slightly between 2 devices, is it possible to write this in a single script and apply to 2 devices?

Here is my script so far.

#@METADATASTART
#@ScriptDescription "Create mLAG Port"
#@DetailDescriptionStart
##############################################################################
#
# Purpose: Create mLAG Port
#
# Version : 1.0
#
##############################################################################
#@DetailDescriptionEnd
#
#@SectionStart ( description = "mLAG Section")
#@VariableFieldLabel (
# description = "mLAG VLAN Name",
# type = String,
# scope = global,
# required = yes,
# value = "mLAG-ISL",
# name = "MlagName"
# )
#
#@SectionEnd
#@VariableFieldLabel (
# description = "mLAG VLAN ID",
# type = String,
# scope = global,
# required = yes,
# value = "4092",
# name = "MlagId"
# )
#
#@SectionEnd
#@SectionStart ( description = "mLAG ISL Port")
#@VariableFieldLabel (
# description = "mLAG ISL Port",
# type = String,
# scope = global,
# required = yes,
# value = "port_number",
# name = "MlagPort"
# )
#@SectionEnd
#@SectionStart ( description = "mLAG Peer")
#@VariableFieldLabel (
# description = "mLAG Peer",
# type = String,
# scope = global,
# required = yes,
# value = "peer_switch",
# name = "MlagPeer"
# )
#@MetaDataEnd

import re
import commands

def allowedSigns(tagged_vlans):
reg = re.compile(r'[^0-9,]')
string = reg.search(tagged_vlans)
return not bool(string)

def vlanCheck(tagged_vlans):
if allowedSigns(tagged_vlans) == True:
vlanList = tagged_vlans.split(",")
for v in vlanList:
if int(v) > 4094 or int(v) < 1 or int(v) == 4051 or int(v) == 4052:
print "Error not a valid vlan id" + v
return False
else:
print "Wrong character in vlan list, use only digits and \",\" as separator, please!"
return False

return True

def main():

varMlagName = emc_vars["MlagName"]
varMlagId = emc_vars["MlagId"]
varMlagPort = emc_vars["MlagPort"]
varMlagPeer = emc_vars["MlagPeer"]
#varDeviceName = emc_vars["deviceName"]

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

print("The name of the device is :" + emc_vars["deviceName"])
#create mlag if needed#
cli_result = emc_cli.send("disable clipaging")
cli_result = emc_cli.send("show mlag peer")
mlag = cli_result.getOutput()
mlag_vlan = re.findall(r"VLAN\s+:\s\S{3,15}", mlag)
mlagid = [s.strip('VLAN : ') for s in mlag_vlan]
if mlagid:
print("mLAG id is: ", mlagid)
else:
print("mLAG does not exist. Creating ISC...")
cli_result = emc_cli.send("create vlan " + varMlagName)
cli_result = emc_cli.send("configure vlan " + varMlagName + " tag " + varMlagId)
cli_result = emc_cli.send("configure vlan " + varMlagName + " add ports " + varMlagPort + " tagged")
cli_result = emc_cli.send("configure vlan " + varMlagName + " ipaddress 169.254.40.93 255.255.255.252")
cli_result = emc_cli.send("enable sharing " + ports + " grouping " + ports + " algorithm address-based L3_L4") #create LACP option#
cli_result = emc_cli.send("create mlag peer " + varMlagPeer)
cli_result = emc_cli.send("configure mlag peer " + varMlagPeer + " ipaddress 169.254.40.94 vr VR-Default")
cli_result = emc_cli.send("enable mlag port " + ports + " peer " + varMlagPeer + " id 1")

main()

Re: Create mLAG Port with XMC Python

StephanH — Thu, 15 Oct 2020 12:16:08 GMT

Hello cslayton,

did you see the the System Workflow “Configure ISC and MLAG Peers on EXOS” (in System Workflows->Config->LAG-MLAG)?

Maybe that Workflow do the work for you. Or did you miss something?

Regards

Stephan

Re: Create mLAG Port with XMC Python

StephanH — Thu, 15 Oct 2020 12:24:42 GMT

Hello cslyton,

Regarding your original question. You have among others the following options:

Either you select both partners (switches) at the beginning of your workflow that belong to your MLAG and use variables to make sure that the Config fits once for the left and once for the right (you can use the emc_vars to query which switch is currently configured).
Or you can start the workflow with the first switch and then change the IP to the second switch and continue working with them. (How this works is described here: https://community.extremenetworks.com/extrememanagement-230297/set-switch-ip-at-runtime-in-workflow-or-script-7815564)

Regards

Stephan

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Thu, 15 Oct 2020 14:14:20 GMT

cslayton,

Did checked the standard workflow for this on the XMC?

It is located at Tasks/Workflows/System Workflows/Syste/Config/LAG-MLAG/Configure ISC and MLAG Peers on EXOS

Regards

Mig

Re: Create mLAG Port with XMC Python

StephanH — Thu, 15 Oct 2020 14:56:10 GMT

Hey Mig,

I have also suggested this above

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Thu, 15 Oct 2020 15:05:42 GMT

It’s too early for me

Re: Create mLAG Port with XMC Python

Ludovico_Steven — Thu, 15 Oct 2020 16:10:18 GMT

If you enable the Multi-Device menu option for the script, it can then be executed against 2 (or more) switches at the same time. What happens then is that your script gets executed simultaneously against multiple switches (i.e. you get multiple threads of the same script) each instance will have the same inputs but will operate against a different switch IP.

So that will work; the problem is if you need those instances to get inputs from each other, as there is no mechanism in XMC to exchange data between those threads.

Another approach is to use workflows (not scripts) and let the workflow take both switch IPs from the start (so 1 single workflow thread) and then have parallel activities within the workflow, on both switches; here it is possible to exchange data inside the workflow.

Re: Create mLAG Port with XMC Python

PeterK — Thu, 15 Oct 2020 18:03:26 GMT

another way could to enable “orchestration mode” before doing portconfig. Than the switch is doing a sync by themself.

Re: Create mLAG Port with XMC Python

cslayton — Fri, 16 Oct 2020 01:42:30 GMT

Thanks all for your replies! I am new to XMC and completely missed the “workflow” section. However, in my workflow tab I don’t see Configure ISC and MLAG Peers on EXOS. See screenshot. I’m wondering if this is a permissions issue.

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Fri, 16 Oct 2020 01:46:06 GMT

What version of XMC are you running?

Mig

Re: Create mLAG Port with XMC Python

cslayton — Fri, 16 Oct 2020 03:34:59 GMT

@Miguel-Angel RODRIGUEZ-GARCIA

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Fri, 16 Oct 2020 03:38:21 GMT

cslayton,

The default Workflows are changing with the upgrades.

Extreme is adding features and new workflows.

I can export it and send it to you by email if you send me your email address by private message.

Another option is to upgrade.

Regards

Mig

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Fri, 16 Oct 2020 03:38:38 GMT

FYI

I’m running 8.1.5

Re: Create mLAG Port with XMC Python

StephanH — Fri, 16 Oct 2020 03:52:16 GMT

Hello Mig,

is your version 8.1.5 correct or do you meen 8.5.1?

I can see the workflow on 8.4.4.x and 8.5.1.60 with ADV license but not an a 8.3.1.9 with Standard license.

Maybe the license is the difference if you have realy a old 8.1x.

Regards

Stephan

Re: Create mLAG Port with XMC Python

Miguel-Angel_RO — Fri, 16 Oct 2020 03:53:27 GMT

Sorry I crossed fingers...It is 8.5.1

Mig

Re: Create mLAG Port with XMC Python

StephanH — Fri, 16 Oct 2020 12:25:31 GMT

Hmm,

so it still remains two options cslayton, either your version is too old or the license type is wrong.

As MIG has already asked. Which version and which type (Basic, Standard, Advanced) do you use?

Regards

Stephan