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Specifying a time base

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Specifying a time base If you specify a time base value other than none (seconds, minute, hour, or day), Fabric Watch does not use the current data value. Instead, it calculates the difference between the current data value and the data value as it existed one time base ago. It compares this difference to the threshold boundary limit. For example, if you specify the time base minute, Fabric Watch calculates the counter value difference between two samples a minute apart. It then compares the difference (current data value - data value one minute ago) against the preset threshold boundary. When you set a time base to a value other than none, there are two main points to remember when configuring events: • Fabric Watch triggers an event only if the difference in the data value exceeds the preset threshold boundary limit. • Even if the current data value exceeds the threshold, Fabric Watch does not trigger an event if the rate of change is below the threshold limit. The following examples illustrate each point. Example1: Triggering an Event Figure shows a sample graph of data obtained by Fabric Watch (the type of data is irrelevant to the example). A high threshold of 2 is specified to trigger an event. A time base of minute is defined. An event occurs only if the rate of change in the specific interval (one minute in this example) is across the threshold boundary. It should be either higher than the high threshold limit or lower than the low threshold limit. As illustrated on the tenth sample, the counter value changes from 0 to 1; hence calculated rate of change is 1 per minute. At the thirteenth sample, the rate of change is 2 per minute. The rate of change must be at least 3 per minute to exceed the event-triggering requirement of 2, which is met on the eighteenth sample. Figure 4 Event trigger Example 2: Not Triggering an Event Figure uses the same data to illustrate a case in which a threshold is exceeded without triggering an event. In this case, the calculated rate of change in the data value is always less than or equal to the high threshold of 2. At the tenth sample, the rate of change is one per minute. At the fourteenth, twenty-first, and twenty-fifth sample, the rate of change remains equal to the high threshold of 2. In this case, Fabric Watch 22 Fabric Watch concepts

Section	Page
Contents	3
Intended audience	7
Related documentation	7
Document conventions and symbols	8
Table 1 Document conventions	8
HP technical support	9
HP-authorized reseller	9
Helpful web sites	9
An introduction to Fabric Watch	11
Fabric Watch overview	11
Introduction to fabric health	12
Fabric Watch concepts	13
Fabric watch components	13
Classes	13
Table 2 Fabric Watch classes	13
Areas	14
Environment class areas	14
Table 3 Environment class areas	14
Fabric class areas	15
Table 4 Fabric class sreas	15
FRU class areas	15
Table 5 FRU class areas	15
Performance monitor class areas	16
Table 6 Performance monitor class areas	16
Port class areas	16
Table 7 Port class areas	16
Resource class area	17
Table 8 Resource class area	17
Security class areas	17
Table 9 Security class areas	17
SFP class areas	18
Table 10 SFP class areas	18
Elements	19
Configuring events	19
Event behavior types	19
Continuous event behavior	19
Triggered event behavior	20
Data values	20
Threshold values	20
High and low thresholds	20
Buffer values	20
Figure 1 Threshold monitoring	21
Figure 2 A buffered data region	21
Time bases	21
Setting time base to none	21
Figure 3 Time base set to none	21
Specifying a time base	22
Figure 4 Event trigger	22
Figure 5 Example without an event	23
Event settings	23
Above event triggers	23
Figure 6 Above event trigger with buffer zone	23
Below event trigger	24
Changed event trigger	24
Figure 7 Changed threshold	24
In-Between triggers	24
Figure 8 In-Between trigger	24
Port persistence	25
Notification methods	25
Switch event (error) log entry	25
SNMP trap	25
RAPITrap	26
Port log lock	26
Email alert	26
Assigning notification methods	26
Table 11 Numerical values of notification methods	26
Switch policies	27
Interpreting event messages	27
Activating and accessing Fabric Watch	29
Activating Fabric Watch	29
Activating with telnet	29
Activating with Advanced Web Tools	29
Accessing Fabric Watch	29
Telnet	30
Advanced Web Tools	30
SNMP-Based enterprise managers	30
Configuration file	32
Configuring Fabric Watch	33
Configuring Fabric Watch thresholds	33
Step 1: Select the class and area to configure	33
Table 12 Element listing information - RXPerformance area menu	34
Step 2: Configure thresholds	35
1. refresh	35
2. disable a threshold	35
Figure 9 Disabling a threshold	36
3. enable a threshold	36
4. advanced configuration	37
Table 13 Element listing information - Advanced Configuration Menu	38
Table 14 Element listing information - threshold boundary menu	40
Step 3: Configure alarms	41
How to calculate values for alarms	41
Figure 10 Changing the threshold alarm level	43
Figure 11 Applying threshold alarm changes	43
Table 15 Advanced configuration options	44
Step 4: Disable and enable thresholds by port (optional)	45
Configuring notifications	46
Configuring alarm notifications	46
Configuring SNMP notifications	46
Configuring port log lock actions	46
Configuring email notifications	47
Figure 12 fwMailcfg Menu	47
1: Show Mail configuration information	47
Figure 13 Config show menu	47
Configuring switch status policy	49
Step 1: Plan and define your switch status policy	49
Table 16 Switch status policy monitor health factors	49
Step 2: Implement your switch status policy	50
Step 3: View your switch status policy	50
Configuring FRUs	50
Figure 14 fwFruCfg configuration	51
Configuring Fabric Watch using Web Tools	51
Configuring Fabric Watch using SNMP	51
Figure 15 Configuring Fabric Watch using SNMP	52
Figure 16 Enabling Fabric Watch Traps in SNMP	52
Figure 17 Configuring SNMP management host IP address	53
Figure 18 Example OID tree	54
Figure 19 Example swFwName screen	54
Default threshold values	57
Environment class	57
Table 17 Environment class threshold defaults	58
Fabric class	60
Table 18 Fabric Class threshold defaults	60
Performance monitor class	61
Table 19 AL_PA performance monitor class threshold defaults	61
Table 20 Customer-Defined performance monitor class threshold defaults	61
Table 21 End-to-End performance monitor class threshold defaults	62
Port class	62
Table 22 Port Class threshold defaults	62
Table 23 E-Port class threshold defaults	63
Table 24 F/FL-Port class threshold defaults	64
Resource class	65
Table 25 Resource class threshold defaults	65
Security class	66
Table 26 Security class threshold defaults	66
SFP class	68
Table 27 SFP Class Threshold Defaults	68
Basic Fabric Watch configuration guidelines	69
Using Fabric Watch with configuration files	71
Configuration files	71

Match case Limit results 1 per page

Fabric Watch concepts

Specifying a time base

If you specify a time base value other than

none

(

seconds

minute

hour

, or

day

), Fabric Watch does not use

the current data value. Instead, it calculates the difference between the current data value and the data

value as it existed one time base ago. It compares this difference to the threshold boundary limit.

For example, if you specify the time base

minute

, Fabric Watch calculates the counter value difference

between two samples a minute apart. It then compares the difference (current data value – data value one

minute ago) against the preset threshold boundary.

When you set a time base to a value other than

none

, there are two main points to remember when

configuring events:

•

Fabric Watch triggers an event only if the difference in the data value exceeds the preset threshold

boundary limit.

•

Even if the current data value exceeds the threshold, Fabric Watch does not trigger an event if the

rate of change is below the threshold limit.

The following examples illustrate each point.

Example1: Triggering an Event

Figure

shows a sample graph of data obtained by Fabric Watch (the type of data is irrelevant to the

example). A high threshold of 2 is specified to trigger an event. A time base of

minute

is defined. An event

occurs only if the rate of change in the specific interval (one minute in this example) is across the threshold

boundary. It should be either higher than the high threshold limit or lower than the low threshold limit. As

illustrated on the tenth sample, the counter value changes from 0 to 1; hence calculated rate of change is

1 per minute. At the thirteenth sample, the rate of change is 2 per minute. The rate of change must be at

least 3 per minute to exceed the event-triggering requirement of 2, which is met on the eighteenth sample.

Figure 4

Event trigger

Example 2: Not Triggering an Event

Figure

uses the same data to illustrate a case in which a threshold is exceeded without triggering an event.

In this case, the calculated rate of change in the data value is always less than or equal to the high

threshold of 2. At the tenth sample, the rate of change is one per minute. At the fourteenth, twenty-first, and

twenty-fifth sample, the rate of change remains equal to the high threshold of 2. In this case, Fabric Watch