3com S7906E 설치 설명서

 

1-13 

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The manually configured global unicast address takes precedence over the one automatically 

generated. If a global unicast address has been automatically generated on an interface when you 

manually configure another one with the same address prefix, the latter overwrites the previous 

one. After that, the overwritten automatic global unicast address will not be restored even if the 

manual one is removed. Instead, a new global unicast address will be automatically generated 

again based on the address prefix information in the RA message that the interface receives for the 

next time. 

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Executing the undo ipv6 address auto command removes all the automatically-generated global 

unicast addresses from an interface. The automatically generated link-local address on the 

interface can be removed only when no IPv6 site-local address or global unicast address exists, 

and the ipv6 address auto link-local command is not configured. 

 

The IPv6 address of a neighbor node can be resolved into a link-layer address dynamically through NS 

and NA messages or through a manually configured static neighbor entry. 

The device uniquely identifies a static neighbor entry according to the neighbor IPv6 address and the 

local Layer 3 interface ID. Currently, there are two configuration methods: 

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Associate a neighbor IPv6 address and link-layer address with a Layer 3 interface. 

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Associate a neighbor IPv6 address and link-layer address with a port in a VLAN. 

 

Follow these steps to configure a static neighbor entry: 

Enter system view 

— 

Configure a static 
neighbor entry 

ipv6 neighbor ipv6-address mac-address { vlan-id 
port-type port-number | interface interface-type 
interface-number } 

Required 

 

You can adopt either of the two methods above to configure a static neighbor entry. 

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After a static neighbor entry is configured by using the first method, the device needs to resolve the 

corresponding Layer 2 port information of the VLAN interface. 

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If you adopt the second method, you should ensure that the corresponding VLAN interface exists 

and that the Layer 2 port specified by port-type  port-number belongs to the VLAN specified by 

vlan-id. After a static neighbor entry is configured, the device relates the VLAN interface to the IPv6 

address to uniquely identify a static neighbor entry.