12-27 
ipv6 nd hop-limit 
Syntax 
ipv6 nd hop-limit value 
undo ipv6 nd hop-limit 
View 
System view 
Default Level 
2: System level 
Parameters 
value: Number of hops, in the range of 0 to 255. When it is set to 0, the Cur Hop Limit field in RA 
messages sent by the AP is 0. That is, the number of hops is determined by the host itself, but not 
specified by the AP. 
Description 
Use the ipv6 nd hop-limit command to configure the hop limit advertised by the AP. 
Use the undo ipv6 nd hop-limit command to restore the default hop limit. 
By default, the hop limit advertised by the AP is 64. 
Examples 
# Set the hop limit advertised by the AP to 100. 
<Sysname> system-view 
[Sysname] ipv6 nd hop-limit 100 
ipv6 nd mac-check enable 
Syntax 
ipv6 nd mac-check enable 
undo ipv6 nd mac-check enable 
View 
System view 
Default Level 
2: System level 
Parameters 
None 
Description 
Use the ipv6 nd mac-check enable command to enable the consistency check on the source MAC 
address of ND packets. With this command configured, a gateway checks the source MAC address of 
each received ND packet against that in the link layer address option, and discards the packet if the 
MAC addresses are inconsistent. 
Use the undo ipv6 nd mac-check enable command to disable the function 
By default, the consistency check on the source MAC address of ND packets is disabled.