Product Description

nanoBTS Product Description DHCP
© ip.access Ltd Page 47
RENEWING
DHCP-ACK
BOUND
T2 Expiry
DHCP-
REQUEST
Broadcast
REBINDING
DHCP-NACK
Update saved IP
Address and IP
Config + any VSI
updates
DHCP spec says "inform
the user" - attempt to send
Warning FER if connected
to an OML system.
Set T1 & T2 &
Lease Timer
Lease
Expired
Remove i/f IP
Address
START
Apply "IP Config"
& "IP Gateway
Config"
Remove i/f IP
Address
Any
Config
Changed?
N
Y
Set Tr
((Remaining time
to Lease expiry)/2)
5
Tr Expiry
DHCP-
REQUEST
RENEWING
Set Tr
((Remaining time
toT2)/2)
Unicast
Effectively, this means a
BTS reboot to reset the IP
stack - means address will
be re-acquiredand as
DHCP state will be back to
START.
Figure 15 - RENEWING state