Avaya Configuring SNMP, BOOTP, DHCP, and RARP Services Manual de usuario Pagina 53
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- MARCADORES
Valorado. / 5. Basado en revisión del cliente
SNMP, BootP, BootP/DHCP Relay, DHCP Server, and RARP Concepts
117362-C Rev 00
2-23
Requesting and Receiving IP Information
Figure 2-8
shows the next stage of the process for requesting and receiving IP
information using a BootP relay agent:
Figure 2-8. Requesting and Receiving IP Information (BootP Relay Agent)
1.
When the client has chosen a target server, it broadcasts a DHCPREQUEST
packet. The DHCPREQUEST packet contains the address of the target server
in the server IP address field and the lease offer that it prefers.
2.
The router configured as a BootP relay agent receives the packet and forwards
it to all servers.
3.
Those servers examine the packet, and if their IP addresses differ from the
value in the server IP address field, they reclaim the IP addresses they
supplied in the DHCPOFFER packets. These addresses are now available for
other clients.
3. Target server transmits
DHCPACK or DHCPNAK
packet to BootP relay
agent.
1. Client broadcasts
a DHCPREQUEST
packet.
4. BootP relay agent
transmits DHCPACK
or DHCPNAK
packet to client.
2. BootP relay agent
transmits DHCPREQUEST
packet to all servers
that supplied a
DHCPOFFER packet.
Router (BootP
relay agent)
SNM0006A
DHCP
server
DHCP
client
- Configuring SNMP 1
- BootP, DHCP, and RARP 1
- Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 117362-C Rev 00 10
- Before You Begin 15
- Text Conventions 16
- Acronyms 17
- How to Get Help 18
- Chapter 1 19
- Starting SNMP, BootP 19
- DHCP, and RARP Services 19
- Starting Configuration Tools 20
- Using the BCC 21
- Starting SNMP Services 22
- Using Site Manager 23
- Starting BootP Services 24
- Starting BootP/DHCP Relay 26
- Starting a DHCP Server 27
- Starting RARP Services 29
- Chapter 2 31
- SNMP Messages 32
- SNMP Communities 33
- SNMP Implementation Notes 34
- Table 2-1. Severity Levels 35
- Thresholds 37
- Threshold Example 38
- BootP Relay Agent Overview 40
- DHCP Overview 44
- Dynamic IP Address Allocation 45
- DHCP Components 46
- DHCP Server Implementation 48
- IP network 49
- RARP Overview 59
- Chapter 3 61
- Customizing SNMP 61
- Disabling and Reenabling SNMP 63
- Specifying a Lock Address 66
- Adding SNMP Communities 69
- Deleting an SNMP Community 72
- Adding a Manager 73
- Deleting a Manager 77
- Specifying a Trap Entity 79
- Disabling a Trap Entity 82
- Configuring Trap Exceptions 83
- Deleting Trap Exceptions 85
- Configuring Thresholds 86
- Adding a Threshold 88
- Specifying Threshold Units 91
- Chapter 4 97
- (continued) 100
- Customizing BootP 101
- (continued) 106
- Deleting BootP Globally 114
- Customizing BootP/DHCP Relay 115
- Chapter 5 115
- BootP Relay Agent 116
- Defining DHCP Servers 117
- Chapter 6 121
- Customizing the DHCP Server 121
- Specifying the Debug Level 128
- Deleting DHCP Globally 130
- Chapter 7 131
- Customizing RARP 131
- Customizing RARP Parameters 132
- Disabling RARP Globally 135
- Deleting RARP Globally 135
- Appendix A 137
- SNMP, BootP, DHCP, and RARP 137
- Parameter Descriptions 137
- Caution: 138
- SNMP Global Parameters 139
- SNMP Community Parameters 141
- SNMP Manager Parameters 142
- BootP and DHCP Parameters 152
- BootP Address Parameters 154
- DHCP Global Parameters 160
- RARP Interface Parameters 164
- RARP Address Parameters 164
- Appendix B 167
- Default Parameter Settings 167
- RARP Parameters 171
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