Example: Configuring basic IPv6 settings
Network configuration
As shown in Figure 63, a host, Switch A, and Switch B are connected through Ethernet ports. Add the Ethernet ports to corresponding VLANs. Configure IPv6 addresses for the VLAN interfaces and verify that they are connected. Switch B can reach the host.
Enable IPv6 on the host to automatically obtain an IPv6 address through IPv6 ND.
Figure 63: Network diagram
Procedure
![[IMPORTANT: ]](images/important.png) | IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface. | |
This example assumes that the VLAN interfaces have been created on the switches.
Configure Switch A:
# Specify a global unicast address for VLAN-interface 2.
<SwitchA> system-view [SwitchA] interface vlan-interface 2 [SwitchA-Vlan-interface2] ipv6 address 3001::1/64 [SwitchA-Vlan-interface2] quit
# Specify a global unicast address for VLAN-interface 1, and allow it to advertise RA messages (no interface advertises RA messages by default).
[SwitchA] interface vlan-interface 1 [SwitchA-Vlan-interface1] ipv6 address 2001::1/64 [SwitchA-Vlan-interface1] undo ipv6 nd ra halt [SwitchA-Vlan-interface1] quit
Configure Switch B:
# Configure a global unicast address for VLAN-interface 2.
<SwitchB> system-view [SwitchB] interface vlan-interface 2 [SwitchB-Vlan-interface2] ipv6 address 3001::2/64 [SwitchB-Vlan-interface2] quit
# Configure an IPv6 static route with destination IPv6 address 2001::/64 and next hop address 3001::1.
[SwitchB] ipv6 route-static 2001:: 64 3001::1
Configure the host:
Enable IPv6 for the host to automatically obtain an IPv6 address through IPv6 ND.
# Display neighbor information for Ten-GigabitEthernet 1/0/2 on Switch A.
[SwitchA] display ipv6 neighbors interface ten-gigabitethernet 1/0/2 Type: S-Static D-Dynamic O-Openflow R-Rule I-Invalid IPv6 address Link Layer VID Interface/Link ID State T Age FE80::215:E9FF:FEA6:7D14 0015-e9a6-7d14 1 XGE1/0/2 STALE D 1238 2001::15B:E0EA:3524:E791 0015-e9a6-7d14 1 XGE1/0/2 STALE D 1248
The output shows that the IPv6 global unicast address that Host obtained is 2001::15B:E0EA:3524:E791.
Verifying the configuration
# Display the IPv6 interface settings on Switch A. All IPv6 global unicast addresses configured on the interface are displayed.
[SwitchA] display ipv6 interface vlan-interface 2
Vlan-interface2 current state: UP
Line protocol current state: UP
IPv6 is enabled, link-local address is FE80::20F:E2FF:FE00:2
Global unicast address(es):
3001::1, subnet is 3001::/64
Joined group address(es):
FF02::1
FF02::2
FF02::1:FF00:1
FF02::1:FF00:2
MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND retransmit interval is 1000 milliseconds
Hosts use stateless autoconfig for addresses
IPv6 Packet statistics:
InReceives: 25829
InTooShorts: 0
InTruncatedPkts: 0
InHopLimitExceeds: 0
InBadHeaders: 0
InBadOptions: 0
ReasmReqds: 0
ReasmOKs: 0
InFragDrops: 0
InFragTimeouts: 0
OutFragFails: 0
InUnknownProtos: 0
InDelivers: 47
OutRequests: 89
OutForwDatagrams: 48
InNoRoutes: 0
InTooBigErrors: 0
OutFragOKs: 0
OutFragCreates: 0
InMcastPkts: 6
InMcastNotMembers: 25747
OutMcastPkts: 48
InAddrErrors: 0
InDiscards: 0
OutDiscards: 0
[SwitchA] display ipv6 interface vlan-interface 1
Vlan-interface1 current state: UP
Line protocol current state: UP
IPv6 is enabled, link-local address is FE80::20F:E2FF:FE00:1C0
Global unicast address(es):
2001::1, subnet is 2001::/64
Joined group address(es):
FF02::1
FF02::2
FF02::1:FF00:1
FF02::1:FF00:1C0
MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND retransmit interval is 1000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 600 seconds
ND router advertisements live for 1800 seconds
Hosts use stateless autoconfig for addresses
IPv6 Packet statistics:
InReceives: 272
InTooShorts: 0
InTruncatedPkts: 0
InHopLimitExceeds: 0
InBadHeaders: 0
InBadOptions: 0
ReasmReqds: 0
ReasmOKs: 0
InFragDrops: 0
InFragTimeouts: 0
OutFragFails: 0
InUnknownProtos: 0
InDelivers: 159
OutRequests: 1012
OutForwDatagrams: 35
InNoRoutes: 0
InTooBigErrors: 0
OutFragOKs: 0
OutFragCreates: 0
InMcastPkts: 79
InMcastNotMembers: 65
OutMcastPkts: 938
InAddrErrors: 0
InDiscards: 0
OutDiscards: 0
# Display the IPv6 interface settings on Switch B. All IPv6 global unicast addresses configured on the interface are displayed.
[SwitchB] display ipv6 interface vlan-interface 2
Vlan-interface2 current state :UP
Line protocol current state :UP
IPv6 is enabled, link-local address is FE80::20F:E2FF:FE00:1234
Global unicast address(es):
3001::2, subnet is 3001::/64
Joined group address(es):
FF02::1
FF02::2
FF02::1:FF00:2
FF02::1:FF00:1234
MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND retransmit interval is 1000 milliseconds
Hosts use stateless autoconfig for addresses
IPv6 Packet statistics:
InReceives: 117
InTooShorts: 0
InTruncatedPkts: 0
InHopLimitExceeds: 0
InBadHeaders: 0
InBadOptions: 0
ReasmReqds: 0
ReasmOKs: 0
InFragDrops: 0
InFragTimeouts: 0
OutFragFails: 0
InUnknownProtos: 0
InDelivers: 117
OutRequests: 83
OutForwDatagrams: 0
InNoRoutes: 0
InTooBigErrors: 0
OutFragOKs: 0
OutFragCreates: 0
InMcastPkts: 28
InMcastNotMembers: 0
OutMcastPkts: 7
InAddrErrors: 0
InDiscards: 0
OutDiscards: 0
# Ping Switch A and Switch B on the host, and ping Switch A and the host on Switch B to verify that they are connected.
![[NOTE: ]](images/note.png) | NOTE: When you ping a link-local address, use the -i parameter to specify an interface for the link-local address. | |
[SwitchB] ping ipv6 -c 1 3001::1 Ping6(56 data bytes) 3001::2 --> 3001::1, press CTRL_C to break 56 bytes from 3001::1, icmp_seq=0 hlim=64 time=4.404 ms --- Ping6 statistics for 3001::1 --- 1 packet(s) transmitted, 1 packet(s) received, 0.0% packet loss round-trip min/avg/max/std-dev = 4.404/4.404/4.404/0.000 ms [SwitchB] ping ipv6 -c 1 2001::15B:E0EA:3524:E791 Ping6(56 data bytes) 3001::2 --> 2001::15B:E0EA:3524:E791, press CTRL_C to break 56 bytes from 2001::15B:E0EA:3524:E791, icmp_seq=0 hlim=64 time=5.404 ms --- Ping6 statistics for 2001::15B:E0EA:3524:E791 --- 1 packet(s) transmitted, 1 packet(s) received, 0.0% packet loss round-trip min/avg/max/std-dev = 5.404/5.404/5.404/0.000 ms
The output shows that Switch B can ping Switch A and the host. The host can also ping Switch B and Switch A.