BigIron RX Series Configuration Guide 106553-1001986-01Configuring IPv6 on each router interface 43Configuring a global or site-local IPv6 address with an automatically computedEUI-64 interface IDTo configure a global or site-local IPv6 address with an automatically computed EUI-64 interface IDin the low-order 64-bits, enter commands such as the following.BigIron RX(config)# interface ethernet 3/1BigIron RX(config-if-e100-3/1)# ipv6 address 2001:200:12D:1300::/64 eui-64These commands configure the global prefix 2001:200:12d:1300::/64 and an interface ID, andenable IPv6 on Ethernet interface 3/1.Syntax: ipv6 address <ipv6-prefix>/<prefix-length> eui-64You must specify the <ipv6-prefix> parameter in hexadecimal using 16-bit values between colonsas documented in RFC 2373.You must specify the <prefix-length> parameter as a decimal value. A slash mark (/) must followthe <ipv6-prefix> parameter and precede the <prefix-length> parameter.The eui-64 keyword configures the global or site-local address with an EUI-64 interface ID in thelow-order 64 bits. The interface ID is automatically constructed in IEEE EUI-64 format using theinterface’s MAC address.Configuring a link-local IPv6 addressTo explicitly enable IPv6 on a router interface without configuring a global or site-local address forthe interface, enter commands such as the following.BigIron RX(config)# interface ethernet 3/1BigIron RX(config-if-e100-3/1)# ipv6 enableThese commands enable IPv6 on Ethernet interface 3/1 and specify that the interface is assignedan automatically computed link-local address.Syntax: [no] ipv6 enableNOTEWhen configuring VLANs that share a common tagged interface with a Virtual Ethernet (VE)interface, Brocade recommends that you override the automatically computed link-local addresswith a manually configured unique address for the interface. If the interface uses the automaticallycomputed address, which in the case of VE interfaces is derived from a global MAC address, all VEinterfaces will have the same MAC address.To override a link-local address that is automatically computed for an interface with a manuallyconfigured address, enter commands such as the following.BigIron RX(config)# interface ethernet 3/1BigIron RX(config-if-e100-3/1)# ipv6 address FE80::240:D0FF:FE48:4672 link-localThese commands explicitly configure the link-local address FE80::240:D0FF:FE48:4672 forEthernet interface 3/1.Syntax: ipv6 address <ipv6-address> link-localYou must specify the <ipv6-address> parameter in hexadecimal using 16-bit values betweencolons as documented in RFC 2373.
