Telindus 1031 Router
Chapter 15
Reference manual
Auto installing the Telindus 1031 Router
342
15.1 What is BootP and DHCP?
BootP and DHCP are very similar protocols. IP devices without IP address use them to obtain an IP
address.
Compliance:
• BootP complies with RFC951.
• DHCP complies with RFC2131 and RFC2132.
In both protocols, the client IP device sends a limited broadcast request on its interfaces requesting an
IP address. The request contains the client its MAC address, which is a unique identifier (refer to
for more information).
BootP
A workstation with a BootP server interprets incoming BootP requests. You can configure a file on the
server with MAC address and IP address/subnet mask pairs for all devices in the network you want to
service. If the MAC address in the BootP request matches a MAC address in this file, the BootP server
replies with the corresponding IP address and subnet mask.
Assigning an IP address in this way is done through a simple request - response handshake.
The Telindus 1031 Router, being a router, always requests a static IP address.
DHCP
A workstation with a DHCP server works in a similar way as with a BootP server. The difference with
BootP is that you can additionally configure a list of IP addresses on the server. These IP addresses are
dynamically assigned to the IP devices requesting an IP address, independently of their MAC address.
Those address assignments are limited in time.
Assigning an IP address in this way is done through a 4-way handshake and with regular renewals.
The Telindus 1031 Router as relay agent
Being broadcast packets, BootP and DHCP requests can cross a router using IP helper addresses. The
Telindus 1031 Router is a BootP and DHCP relay agent. This means it adds additional information to the
request packets allowing servers on distant networks to send back the answer. This feature is not used
in the auto install procedure.
Summary of Contents for 1031
Page 11: ...Telindus 1031 Router User manual 1 User manual ...
Page 12: ...Telindus 1031 Router User manual 2 ...
Page 80: ...Telindus 1031 Router Chapter 5 User manual Basic configuration 70 ...
Page 168: ...Telindus 1031 Router Chapter 8 User manual Configuring the bridge 158 ...
Page 179: ...Telindus 1031 Router Reference manual 169 Reference manual ...
Page 180: ...Telindus 1031 Router Reference manual 170 ...
Page 308: ...Telindus 1031 Router Chapter 11 Reference manual Status attributes 298 ...
Page 336: ...Telindus 1031 Router Chapter 12 Reference manual Performance attributes 326 ...
Page 348: ...Telindus 1031 Router Chapter 13 Reference manual Alarm attributes 338 ...
Page 362: ...Telindus 1031 Router Chapter 15 Reference manual Auto installing the Telindus 1031 Router 352 ...
Page 370: ...Telindus 1031 Router Chapter 16 Reference manual Downloading software 360 ...
Page 380: ...Telindus 1031 Router Chapter 17 Reference manual Technical specifications 370 ...
Page 381: ...Telindus 1031 Router Annex 371 Annex ...
Page 382: ...Telindus 1031 Router Annex 372 ...
Page 384: ...Telindus 1031 Router Annex A Annex common TCP and UDP numbers 374 ...
Page 386: ...Telindus 1031 Router Annex B Annex product information 376 ...