Extreme Networks EPICenter 7.1 Job Scheduler Installationsanleitung

Extreme Networks Technical Brief

Job Scheduling with EPICenter 7.1

The EPICenter® 7.1 Job Scheduler feature enables network

managers to execute speciﬁc time driven actions on

ExtremeXOS® based switches. Base-level scripts have been

created with the ability to include almost any functionality

desired or imaginable. Intricate tasks such as VLAN creation

with EAPS (Ethernet Automatic Protection Switching) can

be easily accomplished through the integration of scripting

functionality in EPICenter.

Conﬁguration Manager Scripting

EPICenter conﬁguration manager is capable of running or

pre-staging scripts on switches for later usage. It relies on the

built-in capabilities within the ExtremeXOS operating system

and allows conﬁguration or reconﬁguration of features on

individual switches or on multiple switches in parallel. Unlike

other central management systems, conﬁguration manager

scripting does not require constant interactions with the remote

device. Thus, scripts can be created for deployment onto

switches and run autonomously even when changes could

cause a loss of communications with the unit. Other common

uses include scripts used to conﬁgure a new switch or to

enable new feature on a switch.

New Features are Now Available

through Scripts

In many competing network management systems (NMSs),

new software features must be requested from the manu-

facturer. Once the request is made the administrator must

wait for the feature to show up in the next feature pack.

EPICenter 7.1 has taken a different approach: Network

administrators now have the ability to add their own custom

features, whether they are very simple or extremely complex,

through scripts. The only knowledge needed is the sequence

of CLI commands needed to do a task. Now administrators

can rapidly create and deploy custom features and tasks

as needed.

Additionally, by providing users with a simple method to reuse

scripts with variables and a dynamic custom scripting GUI,

these grouped commands have a push-button-type ease of

use. This capability allows for faster reuse and deployment

of scripts through the scripting feature, without the need to

wait for a future software feature pack.

EPICenter 7.1 Job Scheduler

Figure 1: EPICenter Main Screen

Extreme Networks Technical Brief

Figure 2: Graphical Representation of Ring Topology

Custom Deployment Sequence

EPICenter also now allows users to run a script on devices

all at once, or to follow a speciﬁc predeﬁned sequence. This

feature enables administrators to make network-wide updates

in a sequenced order with a few simple clicks. Prior to this

capability, a network operator had to log into each individual

system, make the changes, logout and then repeat the process

for each device. Since this was a manual process, the user

needed to be very careful to avoid typos or making errors in

sequencing. With the custom deployment sequence feature

in EPICenter, the plan can now be laid out and then executed

with conﬁdence. Network operators are no longer faced with

manually typing a long sequence of commands, with the

likelihood of accidentally going out of order or forgetting a

critical step. Through the EPICenter custom deployment

sequence capability, deployment can be speedy, repeatable,

and error free.

Figure 2: Custom Deployment Sequence

Power of Tcl

EPICenter 7.1 scripting leverages the power of Tcl, an industry-

standard scripting language that allows for data and string

manipulation, programming control structures, and other

logical operations. Multifaceted scripts can be created and

used for a wide range of functions, from making simple changes

in the network to complex data-gathering activities and decision

handling. With the availability of Tcl functions, it is now possible

to capture data from multiple outputs, parse that information

for key data points and then take action. Some tasks that

would beneﬁt from this capability include:

• Parsing of status screens to provide a summary of

key information

• Obtaining a quick summary of device health and utilization

• Deploying an additional network feature after checking

for dependencies

• Debugging and isolating network issues

• Achieving feature conﬁguration uniformity

Auto-Generated GUI

One of the powerful features of scripting in EPICenter is its

ability to auto-generate a user interface. Metadata can be

embedded in the script where EPICenter then translates

this data into labels and data entry ﬁelds. The GUI provides

a simpliﬁed interface so that knowledge of how to create

scripts can be isolated to speciﬁc staff members thereby

signiﬁcantly reducing training costs. Less-trained staff members

can use the auto-generated GUI to customize variables at

deployment without needing to understand the details of the

scripts, and the GUI protects the scripts from accidental edits

or changes.

Figure 3: Auto-Generated GUI

Extreme Networks Technical Brief

Reuse of Scripts

One of the many beneﬁts of scripting is the ability to deploy

features in a uniform and repeatable fashion. In busy IT

departments with ever-growing task lists and interruptions,

standard processes can easily be disrupted or delayed—

which increases the potential for human errors. Further,

many network management systems provide static scripts

that can be run only on a single device—customizing device-

speciﬁc values is not possible. To work around this limitation,

IT staffers replicate the script and change the values depending

on the device being accessed, a manual process that can be

prone to errors.

EPICenter 7.1 allows for the reuse of script ﬁles through the

use of variables, which can be easily customized for each

execution or device through the GUI. The GUI provides

operators with meaningful labels for each variable that clearly

state the intended purpose. By providing meaningful labels

and conﬁning changes to the GUI, operator errors are effectively

minimized. In addition, when features are deployed using

EPICenter and scripts, the exact commands, sequence, and

values can be speciﬁed. This allows network managers to

ensure that features are deployed correctly the ﬁrst time and

every time.

Because scripts can be used to automate conﬁguration changes,

the administrator may want to limit which members of the

organization can view, modify, or execute scripts. EPICenter 7.1

provides the administrator the ability to associate access

controls at the individual script level. For audit purposes, log

entries are created whenever a script is executed.

Summary

EPICenter 7.1 network management system puts total

control into the user’s hands. The ability to create and

automate any desired functionality is a new paradigm. Through

easy to create and modify scripts, Extreme Networks®

provides another way to make high-performance network

conﬁguration simpler and easier.

Extreme Networks, Inc. in the United States and/or other countries. Speciﬁcations are subject to change without notice. 1562_02 08/10

www.extremenetworks.com

Corporate

and North America

Extreme Networks, Inc.

3585 Monroe Street

Santa Clara, CA 95051 USA

Phone +1 408 579 2800

Europe, Middle East, Africa

and South America

Phone +31 30 800 5100

Asia Paciﬁc

Phone +852 2517 1123

Japan

Phone +81 3 5842 4011

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