Network Requirements
- Two devices are connected via the Ethernet port, configure the IPv6 global unicast address for the interface, and verify the connectivity between them.
Network Topology
Figure 5-1 Networking for configuring the Ipv6 address of the interface
Configuration Steps
Step 1: Enable the IPv6 forwarding capability of the device.
#Configure Device1.
Device1#configure terminal
Device1(config)#ipv6 unicast-routing
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#Configure Device2.
Device2#configure terminal
Device2(config)#ipv6 unicast-routing
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Step 2: Configure the global unicast address of the interface.
#Configure the global unicast address of Device1 interface gigabitethernet0/0/1 as 2001:1::1/64.
Device1(config)#interface gigabitethernet0/0/1
Device1(config-if-gigabitethernet0/0/1)#ipv6 address 2001:1::1/64
Device1(config-if-gigabitethernet0/0/1)#exit
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#Configure the global unicast address of Device2 interface gigabitethernet0/0/1 as 2001:1::2/64.
Device2(config)# interface gigabitethernet0/0/1
Device2(config-if-gigabitethernet0/0/1)#ipv6 address 2001:1::2/64
Device2(config-if-gigabitethernet0/0/1)#exit
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Step 3: Check the result.
#View the Device1 interface information.
Device1#show ipv6 interface gigabitethernet0/0/1
gigabitethernet0/0/1 is up
VRF: global
IPv6 is enable, link-local address is fe80::0201:7aff:fe46:a64d
Global unicast address(es):
2001:0001::0001, subnet is 2001:0001::/64
Joined group address(es):
ff02::0001:ff00:0001
ff02::0001:ff00:0
ff02::0002
ff02::0001
ff02::0001:ff46:a64d
ND control flags: 0x1
MTU is 1500 bytes
ICMP redirects are enabled
ICMP unreachables are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 (unspecified)
ND advertised retransmit interval is 0 (unspecified)
After configuring the IPv6 address, enable the IPv6 protocol function on the interface automatically, generate the local address of the link automatically, and add into the corresponding multicast group.
#View the interface information of Device2.
Device2#show ipv6 interface gigabitethernet0/0/1
gigabitethernet0/0/1 is up
VRF: global
IPv6 is enable, link-local address is fe80::0201:7aff:fe22:e222
Global unicast address(es):
2001:0001::0002, subnet is 2001:0001::/64
Joined group address(es):
ff02::0001:ff00:0002
ff02::0001:ff00:0
ff02::0002
ff02::0001
ff02::0001:ff22:e222
ND control flags: 0x1
MTU is 1500 bytes
ICMP redirects are enabled
ICMP unreachables are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 (unspecified)
ND advertised retransmit interval is 0 (unspecified)
#Ping the link local address of Device2 fe80::0201:7aff:fe22:e222 on Device1.
Device1#ping fe80::0201:7aff:fe22:e222
Press key (ctrl + shift + 6) interrupt it.
Sending 5, 76-byte ICMP Echos to fe80::201:7aff:fe22:e222 , timeout is 2 seconds:
Output Interface: gigabitethernet0/0/1
!!!!!
Success rate is 100% (5/5). Round-trip min/avg/max = 0/96/483 ms.
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When pinging the link local address, it is necessary to specify the egress interface, which is the interface on the same link of the ping link local address.
#On Device1, ping the global unicast address of Device2 2001:1::2.
Device1#ping 2001:1::2
Press key (ctrl + shift + 6) interrupt it.
Sending 5, 76-byte ICMP Echos to 2001:1::2 , timeout is 2 seconds:
!!!!!
Success rate is 100% (5/5). Round-trip min/avg/max = 0/36/183 ms.
Device1 and Device2 can ping each other.