7.2: Configure a Cisco IOS DHCPv4 Server Flashcards
Steps to Configure a Cisco IOS DHCPv4 Server
- Exclude IPV4
- Define a DHCPv4 pool name
- Configure the DHCPv4 pool
Step 1. Exclude IPv4 Addresses
The router functioning as the DHCPv4 server assigns all IPv4 addresses in a DHCPv4 address pool unless it is configured to _____.
exclude specific addresses
Step 1. Exclude IPv4 Addresses
Typically, some IPv4 addresses in a pool are assigned to network devices that require ___assignments.
static address
Step 1. Exclude IPv4 Addresses
Commend used to exclude IPV4 address
Router (config)# ip dhcp excluded-address LOW-ADDRESS [HIGH-ADDRESS]
A single address or a range of addresses can be excluded by specifying the ____ of the range
low-address and high-address
___addresses should be those addresses that are assigned to routers, servers, printers, and other devices that have been, or will be, manually configured.
Excluded
Step 2. Define a DHCPv4 Pool Name
Configuring a DHCPv4 server involves defining a____to assign.
pool of addresses
Step 2. Define a DHCPv4 Pool Name
syntax to define the pool
router (config)# ip dhcp pool POOL-NAME
Step 3. Configure the DHCPv4 Pool
The ___and ___ must be configured.
address pool
default gateway router
Step 3. Configure the DHCPv4 Pool
use ___ to define the range of available addresses.
network NETWORK-NUMBER [MASK|/PREFIX-LENGTH]
Step 3. Configure the DHCPv4 Pool
Use ___ to define the default gateway router.
default-router ADDRESS [ADDRESS 2…ADDRESS 8]
Step 3. Configure the DHCPv4 Pool
Use ___ to define DNS server
dns-server ADDRESS [ADDRESS2…ADDRESS8…]
Step 3. Configure the DHCPv4 Pool
Use this to define domain name
domain-name DOMAIN
Step 3. Configure the DHCPv4 Pool
Use this to define the duration of the DHCP lease
lease {DAYS [HOURS[MINUTES]]|INFINITE}
Step 3. Configure the DHCPv4 Pool
Use this to define the NetBIOS WINS server
netbios-name-server ADDRESS [ADDRESS2…ADDRESS8]
SHOW COMMANDS
Displays the DHCPv4 commands configured on the router.
show running-config | section dhcp
SHOW COMMANDS
Displays a list of all IPv4 address to MAC address bindings provided by the DHCPv4 service.
show ip dhcp binding
SHOW COMMANDS
Displays count information regarding the number of DHCPv4 messages that have been sent and received.
show ip dhcp server statistics
You may need to enter ____ on a Windows PC to force it to send out a DHCPDISCOVER message
ipconfig /renew
Steps to verify if DHCPv4 is operational
- Verify the DHCPv4 config
- Verify the DHCPv4 Bindings
- Verify DHCPv4 Statistics
- Verify tDHCPv4 Client Received IPv4 Addressing
TRUE OR FALSE
The DHCPv4 service is not enabled by default
FALSE
The DHCPv4 service is enabled by default
To disable the CISCO IOS DHCPv4 Server service, use the ____global configuration mode command.
no service dhcp
Use the ____ global configuration mode command to re-enable the DHCPv4 server process
service dhcp
DHCPv4 RELAY
The network administrator releases all current IPv4 addressing information using the____command
ipconfig /release
DHCPv4 RELAY
network administrator attempts to renew the IPv4 addressing information with the__ command
ipconfig /renew
DHCPv4 RELAY
the network administrator attempts to renew the IPv4 addressing information with the ____ command
ipconfig /renew
This command caused PC1 to broadcats a DHCPDISCOVER message
ipconfig/ renew
DHCPv4 RELAY
A better solution is to configure R1 with the ____ interface configuration command. This will cause R1 to relay DHCPv4 broadcasts to the DHCPv4 server.
ip helper-address ADDRESS
The network administrator can use the ___command to verify the configuration.
show ip interface
PC1 is now able to acquire an IPv4 address from the DHCPv4 server as verified with the ___command.
ipconfig /all
By default, the ip helper-address command forwards the following eight UDP services:
Port 37: Time
Port 49: TACACS
Port 53: DNS
Port 67: DHCP/BOOTP server
Port 68: DHCP/BOOTP client
Port 69: TFTP
Port 137: NetBIOS name service
Port 138: NetBIOS datagram service
