Avaya Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services Bedienungsanleitung Seite 57
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SNMP, RMON, BootP, DHCP, and RARP Concepts
117362-A Rev. A 2-21
Statistics Group
When you enable the Ethernet DCM, the RMON agent automatically creates a
statistics configuration that records data for each network interface. Through your
RMON network management application, you can create as many statistics
configurations as memory permits, up to the RMON limit of 65,535
configurations.
If you create multiple configurations, it is possible to collect the same set of
statistics for the same interface in multiple data tables. The absolute values of
those statistics may vary from table to table, since the baseline of each statistics
counter occurs when you create a configuration. You may prefer, however, to use
only one statistics configuration, to conserve memory for other RMON groups.
You need 200 bytes of memory for each statistics configuration.
History Group
When you enable the Ethernet DCM, the RMON agent automatically creates a
history configuration that collects history data at two intervals. The first
configuration provides short-term history by sampling statistics every 30 seconds
and holding up to 50 samples (in RMON terms, “buckets”). The second
configuration provides long-term history by sampling statistics every 30 minutes
and holding up to 50 buckets.
Through your RMON network management application, you can create as many
history configurations as memory permits, up to the RMON limit of 65,535
configurations.You can also set the number of buckets a particular history
configuration uses to as many as available memory allows. If you request more
buckets than memory allows, the agent allocates enough buckets to fill available
memory.
You need 504 bytes of memory for each history configuration (252 bytes each for
the short-term and long-term history configurations).
The history data requires 52 bytes of memory per bucket. You calculate the total
memory (in bytes) you need to store the data as follows:
number of buckets * 52 * 2 history configurations
This calculation shows that you need approximately 5.1 KB for the default setting
of 50 buckets.
- Configuring SNMP 1
- RMON, BootP, DHCP 1
- Contents 5
- 117362-A Rev. A 10
- About This Guide 17
- Before You Begin 18
- Conventions 18
- Acronyms 19
- Bay Networks Customer Service 20
- How to Get Help 21
- Chapter 1 23
- Starting SNMP, RMON, BootP 23
- DHCP, and RARP Services 23
- Starting Configuration Tools 24
- Using Site Manager 25
- Using the BCC 25
- Starting SNMP Services 27
- Starting RMON 28
- Enabling the Ethernet DCM 29
- Customizing the Ethernet DCM 30
- Starting BootP Services 31
- Starting DHCP Services 32
- Enabling DHCP on an Interface 33
- Starting RARP Services 34
- Chapter 2 37
- SNMP, RMON, BootP 37
- DHCP, and RARP Concepts 37
- SNMP Messages 38
- SNMP Communities 39
- SNMP Implementation Notes 40
- 2-6 117362-A Rev. A 42
- Table 2-1. Severity Levels 42
- Thresholds 43
- Threshold Example 43
- 2-8 117362-A Rev. A 44
- RMON Overview 45
- How RMON Works 46
- RMON Architecture 47
- RMON MIB Groups 48
- 117362-A Rev. A 2-13 49
- 2-14 117362-A Rev. A 50
- 117362-A Rev. A 2-15 51
- 2-16 117362-A Rev. A 52
- RMON Interoperability Issues 53
- 2-18 117362-A Rev. A 54
- RMON Applications 55
- RMON Memory Use 56
- 117362-A Rev. A 2-21 57
- 2-22 117362-A Rev. A 58
- 117362-A Rev. A 2-23 59
- 2-24 117362-A Rev. A 60
- 117362-A Rev. A 2-25 61
- BootP Relay Agent Overview 62
- 117362-A Rev. A 2-27 63
- 2-28 117362-A Rev. A 64
- 117362-A Rev. A 2-29 65
- DHCP Overview 66
- 117362-A Rev. A 2-31 67
- 2-32 117362-A Rev. A 68
- 117362-A Rev. A 2-33 69
- 2-34 117362-A Rev. A 70
- 117362-A Rev. A 2-35 71
- RARP Overview 72
- 117362-A Rev. A 2-37 73
- Chapter 3 75
- 3-2 117362-A Rev. A 76
- Disabling and Reenabling SNMP 77
- Specifying a Lock Address 80
- Adding SNMP Communities 83
- Deleting an SNMP Community 86
- Adding a Manager 87
- Deleting a Manager 91
- Specifying a Trap Entity 93
- Disabling a Trap Entity 96
- Configuring Trap Exceptions 97
- Deleting Trap Exceptions 99
- Configuring Thresholds 100
- Customizing SNMP 101
- Adding a Threshold 102
- 3-30 117362-A Rev. A 104
- Specifying Threshold Units 105
- 3-32 117362-A Rev. A 106
- 3-34 117362-A Rev. A 108
- Chapter 4 111
- Customizing a DCM for RMON 111
- 4-2 117362-A Rev. A 112
- 1:dcm_image 113
- Specifying the Boot Option 114
- Saving the Boot Image File 115
- 4-6 117362-A Rev. A 116
- 4-8 117362-A Rev. A 118
- Rebooting the Ethernet DCM 120
- 4-12 117362-A Rev. A 122
- 4-14 117362-A Rev. A 124
- Using Optivity LAN with RMON 125
- 4-16 117362-A Rev. A 126
- Chapter 5 127
- Customizing BootP 127
- 5-2 117362-A Rev. A 128
- 5-4 117362-A Rev. A 130
- BootP Server and the Routers 131
- 5-6 117362-A Rev. A 132
- BOOTREQUEST Packets 133
- 5-8 117362-A Rev. A 134
- 5-10 117362-A Rev. A 136
- 5-12 117362-A Rev. A 138
- 5-14 117362-A Rev. A 140
- 5-16 117362-A Rev. A 142
- Deleting BootP Globally 144
- Chapter 6 145
- Customizing DHCP 145
- 6-2 117362-A Rev. A 146
- Deleting DHCP Globally 148
- Chapter 7 149
- Customizing RARP 149
- 7-2 117362-A Rev. A 150
- 7-4 117362-A Rev. A 152
- Disabling RARP Globally 153
- Deleting RARP Globally 153
- Appendix A 155
- Parameter Descriptions 155
- A-2 117362-A Rev. A 156
- SNMP Global Parameters 157
- 158
- SNMP Community Parameters 159
- SNMP Manager Parameters 160
- 117362-A Rev. A A-7 161
- 164
- 167
- 167
- A-14 117362-A Rev. A 168
- DCM Global Parameters 169
- A-16 117362-A Rev. A 170
- 171
- 171
- BootP and DHCP Parameters 174
- 175
- BootP Address Parameters 176
- A-24 117362-A Rev. A 178
- 117362-A Rev. A A-25 179
- RARP Interface Parameters 181
- RARP Address Parameters 181
- A-28 117362-A Rev. A 182
- Appendix B 183
- Default Parameter Settings 183
- (continued) 184
- RARP Parameters 187
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