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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Enable or disable IPv6

By default:
  • IPv6 forwarding is enabled on physical Ethernet interfaces, VLANs, and port groups. IPv6 forwarding is disabled only when you enable IPv6 address autoconfiguration on an interface and set it in host mode using the ipv6 address autoconfig command.
  • IPv6 forwarding is permanently disabled on the management Ethernet interface so that it remains in Host mode and does not operate as a router regardless of the ipv6 address autoconfig setting.

If necessary, you can manually disable IPv6 processing on an interface so that the configured IPv6 addresses do not take effect. The IPv6 addresses take effect again when you re-enable IPv6.

If you disable IPv6 and configure a Layer (L2) interface in Layer (L3) mode, IPv6 is not automatically re-enabled on the interface. You must manually re-enable it.

A link-local address automatically generates when you re-enable IPv6 on an interface with the ipv6 enable command.

Disable and enabIe IPv6

OS10(config)# interface ethernet 1/1/8
OS10(conf-if-eth1/1/8)# ipv6 address 2111:dddd:0eee::22/64
OS10(conf-if-eth1/1/8)# no ipv6 address autoconfig
OS10(conf-if-eth1/1/8)# no ipv6 enable
OS10(conf-if-eth1/1/8)# ipv6 enable

Display IPv6 status

OS10# show interface ethernet 1/1/20
Ethernet 1/1/20 is up, line protocol is up
Hardware is Dell EMC Eth, address is ec:f4:bb:fb:fa:30
    Current address is ec:f4:bb:fb:fa:30
Pluggable media present, QSFP+ type is QSFP+ 40GBASE CR 1.0M
    Wavelength is 850
    Receive power reading is 0.0
Interface index is 17305562
Internet address is 20.20.20.1/24
Mode of IPv4 Address Assignment: MANUAL
Interface IPv6 oper status: Enabled
Link local IPv6 address: fe80::eef4:bbff:fefb:fa30/64
Global IPv6 address: 2020::1/64
...
OS10# show ipv6 interface brief
Interface Name    admin/protocol  IPV6 Address/Link-Local Address  IPv6 Oper Status
===================================================================================
Ethernet 1/1/1:1  up   / up       fe80::eef4:bbff:fefb:f9f0/64
                                  2017::1/64                       Enabled
Ethernet 1/1/20   up   / up       fe80::eef4:bbff:fefb:fa30/64
                                  2020::1/64                       Enabled
Management 1/1/1  up   / up       fe80::eef4:bbff:fefb:f9ef/64     Enabled
Vlan 1            up   / up       fe80::eef4:bbff:fefb:fa59/64     Enabled

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