Avaya Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services Manual do Utilizador Página 45
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SNMP, RMON, BootP, DHCP, and RARP Concepts
117362-A Rev. A 2-9
You can, however, identify objects more easily by configuring the software to
report the object name rather than the OID in the event message. To configure the
software to report the object name in the event message, use the Threshold Label
parameter (see page A-15
in Appendix A).
For example, if you set the Threshold Label parameter to
wfCctOptsCngcCfgQp1Threshold, the agent generates an event message similar
to the following:
#1:08/27/96 10:53:20.802 INFO SLOT 2 STA CODE: 6
Object wfCctOptsCngcCfgQp1Threshold with value = 120 units/ hour is
> low threshold.
State of a Threshold
If the collision rate stays above a threshold for an extended period of time, the
agent continues to generate a new event every 5 seconds. You can specify the
maximum number of event messages you want the agent to generate before it
changes the threshold’s state to held.
When the threshold is in a held state, the agent does not generate new events
unless the statistic exceeds the threshold at a different level. If the statistic does
not exceed any threshold for a specified number of polling periods, the agent no
longer considers the threshold held.
Memory Considerations
Polling statistics to determine whether they have reached a threshold and
reporting events when variables exceed thresholds require router processing
capacity. When you set many thresholds and use shorter polling intervals, the
router performance will probably decline.
RMON Overview
RMON is a standard MIB that defines current and historical MAC-layer statistics
and control objects, allowing you to capture real-time information across the
entire network. The RMON standard is an SNMP MIB definition described in
RFC 1757 (formerly 1271) for Ethernet.
- 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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