TNPFA 4.1.1 Installation and User Guide - e IBM Tivoli Composite ...

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The same data is added to the corresponding TVAs in each time period but each period stores the data differently, based on the resolution of that period. A TVA can be visualised as being one of a number of graphs of traffic that records the data relevant for its own combination of key details. Figure 3-6 Web representation of data in Figure 3.5 22 IBM Tivoli Netcool Performance Flow Analyzer: Installation and User Guide
The memory footprint for each TVA is dependent on how many buckets it has to hold. Period Coverage Number of Buckets Resolution (seconds) Resolution TVA Memory Requirement Hour 1 hour 360 10 10 seconds 12296 Bytes Day 25 hours 300 300 5 minutes 10376 Bytes Week 7 days 1 hour 338 1800 30 minutes 11592 Bytes Month 31 days 2 373 7200 2 hours 12712 Bytes hours Quarter 93 days 4 hours 26 minutes 40 seconds 272 29600 8 hours 13 minutes 20 seconds 9480 Bytes Year 366 days 366 86400 24 hours 12488 Bytes Month 31 days 8940 300 5 minutes 286856 Bytes. (HiRes) 1 hour Figure 3-7 Memory requirements The number of TVAs that must be stored depends on the traffic that is received. If all the flows are for one IP Address, Application Name pair then there is one TVA. If only a single octet is sent to another port on that same IP address then a second TVA is created for that IP Address, Application Name pair to hold that information. The memory footprint is the same for any aspect that records octets, flows, or packets. As traffic information is analyzed by Tivoli Netcool Performance Flow Analyzer, the number of TVAs increases as the flow analyzer recognises that existing TVAs do not cover the data presented. If the traffic is quite widely spread across IP address and ports, the memory required to store all the octets broken down by IP Address, Application Name increases by TVA, until the available RAM is used up by Tivoli Netcool Performance Flow Analyzer. To avoid RAM being consumed without restrictions, there are two attributes of each aspect- Upper Limit and Maximal Number. By default, these values are 4000 and 2000 respectively. If the number of TVAs grows to reach the value of Upper Limit, TVAs are deleted to bring the number of TVAs down to the Maximal Number. The TVAs that are removed are deleted, and their data is lost. The total amounts are still maintained. No guarantee is made regarding which TVAs are removed, but an effort is made to keep the same distribution of TVAs based on amount of traffic. For the data for one hour of octets, 4000 separate IP Address and Application Name combinations, the amount of RAM required is 4000 * 12,296 Bytes = 49,184,000 Bytes or 46.9 MB. If we were to record an hour, day, week, month, quarter, and year of octets, packets, and flows for Host Application that hit 4000 TVAs, then the calculation would be: (12,296 + 10,376 + 11,592 + 12,712 + 9,480 + 12,488) * 3 units * 4,000 TVAs = 68,944 * 3 * 4,000 = 827,328,000 Bytes or 789 MB. The same default values for Upper Limit and Maximal Number operate for each aspect type even though certain aspects could not reach 4000 TVAs. For example, there are likely to be only a certain number of flow emitters in a network. © Copyright IBM Corp. 2004, 2010 23
Page 2 and 3: Note: Before using this information
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Page 6 and 7: How this guide is organised This gu
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Page 10 and 11: 1.1 Reporting Traffic usage reports
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Page 14 and 15: Operating System Version Platform S
Page 16 and 17: 1. Uninstall Tivoli Netcool Perform
Page 18 and 19: addsite [] : Add new site delsite [
Page 20 and 21: 3.1.6 Updating the license Figure 3
Page 22 and 23: 3.1.7 Creating a user account Figur
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Page 30 and 31: To enable the user to configure the
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Page 40 and 41: 4.4 User management To generate a n
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Page 52 and 53: 5.2 Aspect views Traffic views are
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Page 62 and 63: Figure 5-14 Analyzer > ICMP (select
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Page 66 and 67: Figure 5-18 Analyzer > Flow view (l
Page 68 and 69: Figure 5-20 Analyzer > Octets per p
Page 70 and 71: Figure 5-22 Analyzer > Exporter & A
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When a report has just been created
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74 IBM Tivoli Netcool Performance F
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Figure 8-1 Status > System informat
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Figure 8-3 Status > Flow state 78 I
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Problem: SCTP is not visible in net
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Collect the product-specific inform
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This example shows that the custome
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Licensees of this program who wish
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If only one port is registered with
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