DHCP Server Configuration for IPv6
Before configuring make sure that DHCP server is ready.
Topology
Figure 12-20: DHCP IPv6 topology
Configuration
DHCP IPv6 Client Interface
#configure terminal | Enter Configure mode. |
(config)#interface xe47 | Specify the interface (xe47) to be configured and enter the interface mode. |
(config-if)#ipv6 address dhcp | The client requests for the IPv6 address to the server, once it receives the acknowledgment from the server, it assigns the IP address to the interface in which this command is enabled. |
(config-if)#ipv6 dhcp client request dns-nameserver | The client requests for the DNS name server. |
(config-if)#ipv6 dhcp client request ntp-server | The client requests for the NTP server. |
(config-if)#ipv6 dhcp client request domain-search | The client request for IPv6 domain search. |
(config-if)#ipv6 dhcp client request vendor-specific-information | The client request for IPv6 vendor-specific-information. |
(config-if)#ipv6 dhcp client request rapid-commit | The client request to enable rapid-commit. |
(config if)#exit | Exit interface mode. |
(config)#commit | Commit the candidate configuration to the running configuration. |
DHCP IPv6 Server Interface
#configure terminal | Enter Configure mode. |
(config)#interface xe2 | Specify the interface (xe2) to be configured and enter the interface mode. |
(config-if)#ipv6 address dhcp | The client requests for the IPv6 address to the server, once it receives the acknowledgment from the server, it assigns the IP address to the interface in which this command is enabled. |
(config-if)#ipv6 address 2001::1/64 | Configure the IPv6 address to the server interface. |
(config if)#ipv6 dhcp server | Configure an interface as a DHCP server starting interface. |
(config if)#exit | Exit interface mode. |
(config)#commit | Commit the candidate configuration to the running configuration. |
DHCP IPv6 Server Feature
#configure terminal | Enter Configure mode |
(config)#ip vrf vrf1 | Configure IP VRF name |
(config-vrf)#ipv6 dhcp server preference | Configure IPv6 DHCP server preference |
(config-vrf)#ipv6 dhcp server rapid-commit | Configure IPv6 DHCP server rapid-commit |
(config-vrf)#ipv6 dhcp server pool test | Configure IPv6 DHCP server pool name |
(dhcp6-config)#network 2001:: netmask 64 | Configure IPv6 network and netmask |
(dhcp6-config)#address range low-address 2001::1 high-address 2001::124 | Configure IPv6 address range |
(dhcp6-config)#vendor-options 00:00:09:bf:63 | Configure IPv6 vendor option |
(dhcp6-config)#ntp-server 4001::1 | Configure IPv6 NTP server |
(dhcp6-config)#dns-server 3001::1 | Configure IPv6 DNS server |
(dhcp-config)#log-server 5.5.5.6 | Configure log server |
(dhcp6-config)#domain-name abcd | Configure domain name |
(dhcp-config)#tftp-server 5.5.5.6 | Configure TFTP server |
(dhcp-config)#boot-file test | Configure boot-file name |
Validation
Client
OcNOS#sh running-config dhcp
interface eth0
ip address dhcp
!
interface xe2
ipv6 dhcp client request dns-nameserver
ipv6 dhcp client request domain-search
ipv6 dhcp client request ntp-server
ipv6 dhcp client request rapid-commit
ipv6 dhcp client request vendor-specific-information
ipv6 address dhcp
!
OcNOS#show ipv6 int br
Interface IPv6-Address Admin-Sta
tus
ce49 unassigned [up/down]
eth0 fe80::e69d:73ff:fe05:8100 [up/up]
lo ::1 [up/up]
lo.management ::1 [up/up]
xe45 unassigned [up/down]
xe46 unassigned [up/down]
xe47 *2001::124
fe80::e69d:73ff:fe84:8137 [up/up]
xe48 unassigned [up/down]
Server
OcNOS#show running-config dhcp
interface eth0
ip address dhcp
!
!
ipv6 dhcp server rapid-commit
ipv6 dhcp server preference
ipv6 dhcp server pool test
network 2001:: netmask 64
address range low-address 2001::1 high-address 2001::124
vendor-options 00:00:09:bf:63
ntp-server 4001::1
dns-server 3001::1
domain-name abcd
interface xe2
ipv6 dhcp server
!
Last modified date: 10/19/2023