Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 337
Static IPv6 routing, IPv6 destination unreachable
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To disable IPv6 on an interface when a duplicate link-local address is detected, use the ipv6 nd dad disable-ipv6-on-failure command. To re-enable IPv6 after you resolve a duplicate link-local address, enter no ipv6 enable, followed by ipv6 enable. • Disable or re-enable IPv6 duplicate address discovery in Interface mode. ipv6 nd dad {disable | enable} • Disable IPv6 on an interface if a duplicate link-local address is discovered in Interface mode. ipv6 nd dad disable-ipv6-on-dad-failure Disable duplicate address discovery OS10(config)# interface ethernet 1/1/1 OS10(conf-if-eth1/1/1)# ipv6 nd dad disable Disable IPv6 for duplicate link-local address OS10(config)# interface ethernet 1/1/1 OS10(conf-if-eth1/1/1)# ipv6 nd dad disable-ipv6-on-dad-failure Static IPv6 routing To define an explicit route between two IPv6 networking devices, configure a static route on an interface. Static routing is useful for smaller networks with only one path to an outside network, or to provide security for certain traffic types in a larger network. • Enter the static routing information including the IPv6 address and mask in x:x:x:x::x format in CONFIGURATION mode-prefix length 0 to 64. ipv6 route ipv6-prefix/mask {next-hop | interface interface [route-preference]} - next-hop - Enter the next-hop IPv6 address in x:x:x:x::x format. - interface interface - Enter the interface type then the slot/port or number information. - route-preference - (Optional) Enter a route-preference range-1 to 255. After you configure a static IPv6 route, configure the forwarding router's address on the interface. The IPv6 neighbor interface must have an IPv6 address configured. Configure IPv6 static routing and view configuration OS10(config)# ipv6 route 2111:dddd:0eee::22/128 2001:db86:0fff::2 OS10(config)# do show ipv6 route static Codes: C - connected S - static B - BGP, IN - internal BGP, EX - external BGP O - OSPF,IA - OSPF inter area, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2, E1 - OSPF external type 1, E2 - OSPF external type 2, > - non-active route Gateway of last resort is not set Destination Gateway Dist/Metric Last Change S 2111:dddd:eee::22/12via 2001:db86:fff::2 ethernet1/1/1 1/1 00:01:24 IPv6 destination unreachable By default, when no matching entry for an IPv6 route is found in the IPv6 routing table, a packet is dropped and no error message is sent. You can enable the capability to send an IPv6 destination unreachable error message to the source without dropping the packet. Layer 3 337