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IPv6 configuration examples > Basic IPv6 configuration example

 

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Basic IPv6 configuration example

Network requirements

As shown in Figure 62, 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 62: Network diagram

Configuration procedure

This example assumes that the VLAN interfaces have been created on the switches.

  1. 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

  2. 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

  3. Configure the host:

    Enable IPv6 for the host to automatically obtain an IPv6 address through IPv6 ND.

    # Display neighbor information for on Switch A.

    [SwitchA] display ipv6 neighbors interface 
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    GE1/0/2             STALE D 1238
2001::15B:E0EA:3524:E791   0015-e9a6-7d14  1    GE1/0/2             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: ]

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.

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