Bootp operation, Networks with dhcp and bootp servers, Handshaking – Intermec 6710 User Manual

Page 87: Infinite leases

Advertising
background image

SECTION 4

"

Configuration

6710 Access Point User’s Guide 4-21

The class identifier string for the access point is “Norand

Access Point.” Servers use this string to identify the access

point.

Bootp Operation

The access point can also accept addresses from a Bootp

server identified in the DHCP server name field. An

address offer from a Bootp server is treated as if it were an

infinite lease from a DHCP server.

Networks With DHCP and Bootp Servers

If the DHCP server name is configured as “”, the access

point responds to either DHCP or Bootp servers. The

access point gives preference to DHCP offers. If a Bootp

reply arrives at the access point before any DHCP offers are

received, the access point waits an additional 4 seconds for

a DHCP offer before responding. If a DHCP offer is

received within the 4-second period, the Bootp reply is

ignored and the DHCP offer is accepted.

Handshaking

When the access point responds to a DHCP or Bootp server,

it broadcasts a single ARP request to the address offered. If

no ARP response is received within 3 seconds, the access

point assumes the IP address is unique and completes the

negotiation for that address. If an ARP reply is received

before the timeout, the access point assumes the address is

a duplicate and declines the offer.

Infinite Leases

A DHCP server may be configured to grant an infinite lease

to the access point. A Bootp grant is always treated as an

infinite lease. The access point stores the IP address,

subnet mask, and default router in the EEPROM

configuration register and disables DHCP. These settings

are maintained if the access point is powered off or rebooted

through the ROM command monitor. To restore DHCP

client operation, reconfigure the IP address to 0.0.0.0.

Advertising