Eg Juniper ex User manual

Monitoring Juniper EX Switch

eG Enterprise v6

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Table of Contents

MONITORING JUNIPER EX SWITCH.....................................................................................................................................1

1.1 The Operating System Layer ............................................................................................................................................ 2

1.1.1 CPU Utilization Test.................................................................................................................................................2

1.1.2 Uptime Test...............................................................................................................................................................4

1.1.3 Memory Test.............................................................................................................................................................6

1.1.4 Temperature Test ......................................................................................................................................................8

1.1.5 Temperature Traps Test ............................................................................................................................................9

1.1.6 Power Supplies Test................................................................................................................................................11

1.1.7 Fans Test................................................................................................................................................................. 14

1.2 The JEX Service Layer ................................................................................................................................................... 16

1.2.1 Switch Details Test .................................................................................................................................................16

CONCLUSION.............................................................................................................................................................................19

M o n i t o r i n g J u n i p e r E X S w i t c h

Monitoring Juniper EX Switch

Juniper EX Series Ethernet switches deliver access, aggregation, and core layer switching services in branch, campus,

and data center networks to ensure fast, secure, reliable delivery of data and applications.

All EX Series Ethernet Switches address escalating demands for high availability, unified communications, mobility

and virtualization within enterprise networks. The EX Series switches increase competitiveness and contribute to

business success by delivering operational efficiency, business continuity, and network agility for end-to-end

enterprise environments.

If this switch, which assures service operators of continuous network connectivity and secure transaction of business,

starts malfunctioning suddenly, the connection to mission-critical services will be lost, thereby causing irreparable

damage to reputation and revenue. It is therefore imperative that the operations of the Juniper Ex Switch are

monitored 24 x 7.

eG Enterprise provides a specialized

Juniper EX Switch

monitoring model (see Figure 1), which periodically polls the

SNMP MIB of the switch to measure the CPU usage, temperature and memory of each hardware component of the

switch and notifies administrators of potential resource crunches and failures of the power supply, fans etc.

Figure 1: The layer model of the Juniper EX Switch

Using the metrics reported , administrators can find quick and accurate answers for the following performance

questions:

Is the CPU utilization of each hardware component optimal? If not, which hardware component is utilizing

the emaximum CPU?

Which hardware component is consuming the maximum memory resources? Is the buffer memory and heap

memory allocated to each hardware component utilized effectively?

Is the temperature maintained optimally for all the hardware components of the Juniper EX Switch?

Is any VPN tunnel hogging the bandwidth resources? If so, which one is it?

Are too many fragmented packets flowing through the firewall? If so, why? Is it because of an incorrect

configuration?

What is the mode of the routing engine available in the Juniper EX Switch?

The Network layer of the

Juniper EX Switch

model is similar to that of a

Windows Generic

server model. Since these

tests have been dealt with in the

Monitoring Unix and Windows Servers

document, Section 1.1 focuses on the

Operating System layer.

M o n i t o r i n g J u n i p e r E X S w i t c h

1.1 The Operating System Layer

This layer tracks the current CPU usage, memory, temperature and the uptime of each hardware component of the

Juniper EX Switch. Besides this, this layer helps you in identifying the number of trap messages that were sent by the

switch for failures of the power supply units , fans and abnormal deduction in temperature of the hardware

components.

Figure 2: The tests mapped to the Firewall Service layer

1.1.1 CPU Utilization Test

This test monitors the current CPU utilization of each hardware component available in the Juniper EX Switch and

reports whether/not the hardware component is consuming too much of CPU resources.

Purpose

Monitors the current CPU utilization of the Juniper EX Switch

Target of the

test

A Juniper EX Switch

Agent

deploying the

test

An external agent

Configurable

parameters for

the test

1. TEST PERIOD - How often should the test be executed

2. HOST –The IP address of the Juniper EX Switch

3. SNMPPORT –The SNMP Port number of the Juniper EX Switch (161 typically)

4. SNMPVERSION –By default, the eG agent supports SNMP version 1. Accordingly, the

default selection in the SNMPVERSION list is v1. However, if a different SNMP framework is

in use in your environment, say SNMP v2 or v3, then select the corresponding option from

this list.

5. SNMPCOMMUNITY –The SNMP community name that the test uses to communicate with

the firewall. This parameter is specific to SNMP v1 and v2 only. Therefore, if the

SNMPVERSION chosen is v3, then this parameter will not appear.

M o n i t o r i n g J u n i p e r E X S w i t c h

6. USERNAME –This parameter appears only when v3 is selected as the SNMPVERSION.

SNMP version 3 (SNMPv3) is an extensible SNMP Framework which supplements the

SNMPv2 Framework, by additionally supporting message security, access control, and

remote SNMP configuration capabilities. To extract performance statistics from the MIB

using the highly secure SNMP v3 protocol, the eG agent has to be configured with the

required access privileges –in other words, the eG agent should connect to the MIB using

the credentials of a user with access permissions to be MIB. Therefore, specify the name of

such a user against the USERNAME parameter.

7. AUTHPASS –Specify the password that corresponds to the above-mentioned USERNAME.

This parameter once again appears only if the snmpversion selected is v3.

8. CONFIRM PASSWORD –Confirm the AUTHPASS by retyping it here.

9. AUTHTYPE –This parameter too appears only if v3 is selected as the SNMPVERSION.

From the AUTHTYPE list box, choose the authentication algorithm using which SNMP v3

converts the specified username and password into a 32-bit format to ensure security of

SNMP transactions. You can choose between the following options:

MD5 –Message Digest Algorithm

SHA –Secure Hash Algorithm

10. ENCRYPTFLAG –This flag appears only when v3 is selected as the SNMPVERSION. By

default, the eG agent does not encrypt SNMP requests. Accordingly, the ENCRYPTFLAG is

set to NO by default. To ensure that SNMP requests sent by the eG agent are encrypted,

select the YES option.

11. ENCRYPTTYPE –If the ENCRYPTFLAG is set to YES, then you will have to mention the

encryption type by selecting an option from the ENCRYPTTYPE list. SNMP v3 supports the

following encryption types:

DES –Data Encryption Standard

AES –Advanced Encryption Standard

12. ENCRYPTPASSWORD –Specify the encryption password here.

13. CONFIRM PASSWORD –Confirm the encryption password by retyping it here.

14. TIMEOUT - Specify the duration (in seconds) within which the SNMP query executed by this

test should time out in the TIMEOUT text box. The default is 10 seconds.

15. DATA OVER TCP –By default, in an IT environment, all data transmission occurs over

UDP. Some environments however, may be specifically configured to offload a fraction of

the data traffic –for instance, certain types of data traffic or traffic pertaining to specific

components –to other protocols like TCP, so as to prevent UDP overloads. In such

environments, you can instruct the eG agent to conduct the SNMP data traffic related to the

Juniper EX Switch over TCP (and not UDP). For this, set the DATA OVER TCP flag to Yes.

By default, this flag is set to No.

16.

Outputs of the

test

One set of results for each hardware component of the Junpier EX Switch that is to be monitored

M o n i t o r i n g J u n i p e r E X S w i t c h

Measurements

made by the

test

Measurement

Unit

Interpretation

CPU utilization:

Indicates the percentage of

CPU utilized by this hardware

component.

Percent

A very high value of this measure indicates a

CPU bottleneck.

Comparing the value of this measure across

the hardware components will help you in

identifying the component that is using the

CPU resources at its maximum.

1.1.2 Uptime Test

This test measures the uptime of each hardware component of the Juniper EX Switch and reports administrators if

any hardware component has been running without reboot for a longer period of time.

Purpose

Measures the uptime of each hardware component of the Juniper EX Switch and reports

administrators if any hardware component has been running without reboot for a longer period

of time

Target of the

test

A Juniper EX Switch

Agent

deploying the

test

An external agent

Configurable

parameters for

the test

1. TEST PERIOD - How often should the test be executed

2. HOST –The IP address of the Juniper EX Switch

3. SNMPPORT –The SNMP Port number of the Juniper EX Switch (161 typically)

4. SNMPVERSION –By default, the eG agent supports SNMP version 1. Accordingly, the

default selection in the SNMPVERSION list is v1. However, if a different SNMP framework is

in use in your environment, say SNMP v2 or v3, then select the corresponding option from

this list. SNMPCOMMUNITY –The SNMP community name that the test uses to

communicate with the firewall. This parameter is specific to SNMP v1 and v2 only. Therefore,

if the SNMPVERSION chosen is v3, then this parameter will not appear.

6. USERNAME –This parameter appears only when v3 is selected as the SNMPVERSION.

SNMP version 3 (SNMPv3) is an extensible SNMP Framework which supplements the

SNMPv2 Framework, by additionally supporting message security, access control, and

remote SNMP configuration capabilities. To extract performance statistics from the MIB

using the highly secure SNMP v3 protocol, the eG agent has to be configured with the

required access privileges –in other words, the eG agent should connect to the MIB using

the credentials of a user with access permissions to be MIB. Therefore, specify the name of

such a user against the USERNAME parameter.