Difference between revisions of "Cisco DHCP"
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Helikopter (talk | contribs) (Created page with " =Server= Exclude IP Addresses, Create DHCP Address Pool, Specify the Network, Set DNS Server, Set the Default Gateway ip dhcp excluded-address [start ip-address] [end ip-add...") |
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| + | Dynamic Host Configuration Protocol. Servrar lyssnar på UDP port 67 och klienter kommunicerar från UDP port 68. | ||
| − | =Server= | + | =IOS= |
| + | ==Server== | ||
Exclude IP Addresses, Create DHCP Address Pool, Specify the Network, Set DNS Server, Set the Default Gateway | Exclude IP Addresses, Create DHCP Address Pool, Specify the Network, Set DNS Server, Set the Default Gateway | ||
ip dhcp excluded-address [start ip-address] [end ip-address] | ip dhcp excluded-address [start ip-address] [end ip-address] | ||
| Line 9: | Line 11: | ||
exit | exit | ||
| − | =Client= | + | ==Client== |
interface Ethernet 1 | interface Ethernet 1 | ||
ip dhcp client hostname R1 | ip dhcp client hostname R1 | ||
| Line 16: | Line 18: | ||
renew dhcp ethernet 3/1 | renew dhcp ethernet 3/1 | ||
| − | =Relay= | + | ==Relay== |
interface Ethernet 1 | interface Ethernet 1 | ||
ip helper-address 10.0.0.10 | ip helper-address 10.0.0.10 | ||
| Line 23: | Line 25: | ||
ip dhcp smart-relay | ip dhcp smart-relay | ||
| − | =Snooping= | + | ==Snooping== |
DHCP snooping is a DHCP security feature that provides network security by filtering untrusted DHCP messages and by building and maintaining a DHCP snooping binding database. | DHCP snooping is a DHCP security feature that provides network security by filtering untrusted DHCP messages and by building and maintaining a DHCP snooping binding database. | ||
ip dhcp snooping | ip dhcp snooping | ||
| Line 32: | Line 34: | ||
Show | Show | ||
show ip dhcp snooping | show ip dhcp snooping | ||
| + | |||
| + | =NX-OS= | ||
| + | feature dhcp | ||
| + | |||
| + | ===Relay=== | ||
| + | int vlan 15 | ||
| + | ip dhcp relay address 10.0.0.10 | ||
[[Category:Cisco]] | [[Category:Cisco]] | ||
Revision as of 10:10, 14 January 2016
Dynamic Host Configuration Protocol. Servrar lyssnar på UDP port 67 och klienter kommunicerar från UDP port 68.
IOS
Server
Exclude IP Addresses, Create DHCP Address Pool, Specify the Network, Set DNS Server, Set the Default Gateway
ip dhcp excluded-address [start ip-address] [end ip-address] ip dhcp pool [poolname] network [ip-address] [subnet-mask] dns-server [ip-address of primary dns-server] [ip-address of secondary dns-server] default-router [ip-address] exit
Client
interface Ethernet 1 ip dhcp client hostname R1 ip address dhcp
Renew
renew dhcp ethernet 3/1
Relay
interface Ethernet 1 ip helper-address 10.0.0.10
Allows the DHCP relay agent to switch the gateway address (giaddr field of a DHCP packet) to secondary addresses when there is no DHCPOFFER message from a DHCP server.
ip dhcp smart-relay
Snooping
DHCP snooping is a DHCP security feature that provides network security by filtering untrusted DHCP messages and by building and maintaining a DHCP snooping binding database.
ip dhcp snooping ip dhcp snooping vlan 10 ip dhcp snooping information option interface gi1 ip dhcp snooping limit rate 100
Show
show ip dhcp snooping
NX-OS
feature dhcp
Relay
int vlan 15 ip dhcp relay address 10.0.0.10
