Avaya Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services Bedienungsanleitung Seite 64
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Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services
2-32 114070 Rev. B
To identify DHCP servers, the client broadcasts a DHCPDISCOVER packet.
F
igure 2-8 shows the fields in a DHCP packet. The packet relay process uses these
fields as follows:
1. A BOOTP relay agent receives the packet, and if it accepts the packet,
transmits it to DHCP servers on other networks.
Figure 2-8. Fields in a DHCP Packet
2. DHCP servers may respond with a DHCPOFFER packet that includes an
available IP address in the your IP address field.
When a DHCP server offers an IP address, that address is temporarily
unavailable to other clients. If the client does not accept or reject the address
within a certain period of time, the server reclaims it. The address is then
available for other clients.
3. The BOOTP relay agent receives the DHCPOFFER packet and examines the
packet. If the BOOTP relay agent accepts the packet, it forwards it to the
client.
Transaction ID (4)
Seconds (2)
Flags (2)
Client IP address (4)
Your IP address (4)
Server IP address (4)
Gateway IP address (16)
Client hardware address (16)
Server name (64)
File name (128)
Options (312)
Operation (1)
*
Hardware type (1)
Hardware address
length (1) Hops (1)
*
The number in parentheses indicates the number of octets in each field.
- Configuring SNMP 1
- RMON, BOOTP, DHCP 1
- Bay Networks Software License 3
- Contents 5
- 114070 Rev. B 10
- About This Guide 15
- Before You Begin 16
- Conventions 16
- Acronyms 17
- World Wide Web 21
- Customer Service FTP 21
- Support Source CD 22
- CompuServe 22
- How to Get Help 23
- Chapter 1 25
- Starting SNMP, RMON, BOOTP 25
- DHCP, and RARP Services 25
- Starting SNMP Services 26
- Starting RMON 27
- Enabling the Ethernet DCM 28
- Customizing the Ethernet DCM 28
- Starting BOOTP Services 29
- Starting DHCP 30
- Starting RARP Services 31
- Chapter 2 33
- SNMP, RMON, BOOTP 33
- DHCP, and RARP Concepts 33
- SNMP Messages 34
- Figure 2-1. Role of SNMP 35
- SNMP Implementation Notes 36
- Internet Protocol (IP) 37
- Events and Traps 37
- 2-6 114070 Rev. B 38
- Table 2-1. Severity Levels 38
- Thresholds 39
- Threshold Example 40
- RMON Overview 42
- SNM0011A 43
- RMON Architecture 44
- RMON MIB Groups 45
- 2-14 114070 Rev. B 46
- 114070 Rev. B 2-15 47
- 2-16 114070 Rev. B 48
- RMON Interoperability Issues 49
- RMON Applications 50
- RMON Memory Use 50
- 114070 Rev. B 2-19 51
- 2-20 114070 Rev. B 52
- 2-22 114070 Rev. B 54
- BOOTP Relay Agent Overview 56
- SNM0002A 57
- 2-26 114070 Rev. B 58
- SNM0001A 59
- 2-28 114070 Rev. B 60
- DHCP Overview 61
- 2-30 114070 Rev. B 62
- SNM0005A 63
- 2-32 114070 Rev. B 64
- SNM0006A 65
- 2-34 114070 Rev. B 66
- RARP Overview 67
- 2-36 114070 Rev. B 68
- Chapter 3 69
- Customizing SNMP 69
- Adding an SNMP Community 71
- Deleting an SNMP Community 72
- Adding a Manager 73
- 3-6 114070 Rev. B 74
- Deleting a Manager 75
- 3-8 114070 Rev. B 76
- Configuring Trap Exceptions 77
- Configuring Thresholds 78
- Adding a Threshold 79
- 3-12 114070 Rev. B 80
- Specifying Threshold Units 81
- 3-14 114070 Rev. B 82
- Chapter 4 83
- Customizing a DCM for RMON 83
- 4-2 114070 Rev. B 84
- Specifying the Boot Option 85
- Saving the Boot Image File 85
- 4-4 114070 Rev. B 86
- Rebooting the Ethernet DCM 87
- 4-8 114070 Rev. B 90
- Using Optivity LAN with RMON 92
- Chapter 5 95
- 5-2 114070 Rev. B 96
- Enable BOOTP on 98
- Corporate backbone 98
- Booting routers 98
- BOOTP server 98
- Customizing BOOTP 101
- 5-8 114070 Rev. B 102
- Deleting BOOTP Globally 104
- Chapter 6 105
- Customizing DHCP 105
- Deleting DHCP Globally 106
- Chapter 7 107
- Customizing RARP 107
- 7-2 114070 Rev. B 108
- Disabling RARP Globally 109
- Deleting RARP Globally 109
- Appendix A 111
- Parameter Descriptions 111
- SNMP Global Parameters 112
- 113
- SNMP Community Parameters 114
- SNMP Manager Parameters 115
- A-6 114070 Rev. B 116
- 119
- 122
- 122
- 114070 Rev. B A-13 123
- DCM Global Parameters 124
- 1:dcm_image 125
- 126
- 126
- BOOTP and DHCP Parameters 129
- 130
- BOOTP Address Parameters 131
- 114070 Rev. B A-23 133
- A-24 114070 Rev. B 134
- RARP Interface Parameters 136
- RARP Address Parameters 136
- 114070 Rev. B A-27 137
- Appendix B 139
- Default Parameter Settings 139
- (continued) 140
- RARP Parameters 143
- 114070 Rev. B Index-1 145
- 114070 Rev. B Index-3 147
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