2.6 -DHCP Configuration Flashcards
What is the first step in configuring a DHCP server?
The first step is to determine the IP address range that will be assigned by the DHCP server, including the associated subnet mask.
What setting in a DHCP server determines how long a workstation can keep the same IP address?
The lease duration.
What additional configurations can be set in a DHCP server apart from IP addresses?
DNS server settings, default gateway, and options for devices like voice over IP servers.
What is an IP scope in a DHCP server?
A large, contiguous range of IP addresses from which the DHCP server assigns addresses.
What can be done to ensure certain IP addresses are not assigned by the DHCP server?
Create DHCP reservations or exclude certain IP addresses within the DHCP server.
How does a DHCP reservation work?
A DHCP reservation ensures that a specific device always receives the same IP address based on its MAC address.
What is the purpose of the T1 timer in a DHCP lease process?
The T1 timer checks in with the DHCP server halfway through the lease time to renew the IP address.
What happens if the DHCP server is unavailable during the T1 timer check-in?
The lease time continues to count down, and the device will try to rebind with any other DHCP server at the T2 timer.
How is a DHCP lease renewal handled visually over an 8-day lease period?
After 4 days, the T1 timer checks in with the DHCP server. If the original DHCP server is unavailable, the T2 timer (at 7 days) will attempt to rebind with another DHCP server.
What information is shown in the DHCP server’s “address leases” section?
The IP addresses that have been previously assigned.
What is a static DHCP assignment?
It is another term for a DHCP reservation, ensuring a device always gets the same IP address.
What is the significance of the T2 timer in the DHCP process?
The T2 timer, occurring at 7/8 of the lease time, attempts to rebind with a redundant DHCP server if the original is unavailable.
What configuration is necessary for a DHCP server in an embedded router?
The start and end address of the IP range, lease time in seconds, gateway configuration, and DNS server settings.
What is a common lease duration configuration seen in DHCP servers?
A lease duration of 24 hours.
