Avaya Configuring BOOTP Services Manual de usuario Pagina 57
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- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
SNMP, BootP, BootP/DHCP Relay, and DHCP Server Concepts
308644-15.1 Rev 00
2-25
1.
The router configured as a DHCP server receives the packet and finds an
available IP address to assign to the client.
2.
The DHCP server sends an ICMP echo request to the prospective IP address
to determine whether the address is available. If the DHCP server receives a
response, the address is unavailable because it is being used by another host
on the network. The DHCP server selects another IP address to offer and
sends another ICMP echo request.
3.
If there is no response to the ICMP echo request, the DHCP server sends a
DHCPOFFER packet that includes an available IP address to the target DHCP
client.
4.
If a client does not receive a DHCPOFFER packet within a specified amount
of time after broadcasting a DHCPDISCOVER packet, it sends the packet
again. The client may rebroadcast the packet a number of times. However,
clients operating on systems running Windows 95 broadcast four
DHCPDISCOVER packets, each 2 seconds apart.
5.
The client may receive DHCPOFFER packets from several potential servers.
If you configure the client to wait for multiple responses, it compares
configuration parameters in the DHCPOFFER packets to decide which server
to target.
Requesting and Receiving IP Information
Figure 2-10
shows the next stage of the process of acquiring a new IP address
from a DHCP server.
- Configuring SNMP, BootP 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308644-15.1 Rev 00 10
- Before You Begin 15
- Text Conventions 16
- Acronyms 17
- Hard-Copy Technical Manuals 18
- How to Get Help 19
- Chapter 1 21
- Starting Configuration Tools 22
- Starting SNMP Services 25
- Starting BootP Services 26
- Starting BootP/DHCP Relay 27
- Starting a DHCP Server 29
- Chapter 2 33
- SNMP Overview 34
- Figure 2-1. Role of SNMP 35
- SNMP Communities 36
- SNMP Implementation Notes 37
- Table 2-1. Severity Levels 38
- Thresholds 39
- Threshold Example 40
- BootP Relay Agent Overview 42
- DHCP Overview 46
- Dynamic IP Address Allocation 47
- DHCP Components 48
- DHCP Server Implementation 55
- 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
- View Index View Name 81
- Disabling a Trap Entity 87
- Configuring Trap Exceptions 88
- Deleting Trap Exceptions 90
- Configuring Thresholds 91
- Adding a Threshold 93
- Specifying Threshold Units 96
- Chapter 4 101
- Customizing BootP 101
- Using the BCC 102
- Enabling ARP Cache Support 103
- Using Site Manager 104
- ) and enter: 113
- Deleting BootP Globally 129
- Chapter 5 131
- Customizing BootP/DHCP Relay 131
- Defining DHCP Servers 133
- Chapter 6 137
- Customizing the DHCP Server 137
- Specifying the Debug Level 147
- Deleting DHCP Globally 151
- Appendix A 153
- Caution: 154
- SNMP Global Parameters 155
- SNMP Community Parameters 157
- SNMP Manager Parameters 158
- BootP and DHCP Parameters 168
- BootP Address Parameters 171
- DHCP Server Global Parameters 176
- Appendix B 181
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