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ipv6 fibcache 
Syntax 
ipv6 fibcache 
undo ipv6 fibcache 
View 
System view 
Default Level 
2: System level 
Parameters 
None 
Description 
Use the ipv6 fibcache command to enable the caching function of the IPv6 FIB. 
Use the undo ipv6 fibcache command to disable the caching function of the IPv6 FIB. 
By default, the caching function of the IPv6 FIB is disabled. 
Note that the caching function of the IPv6 FIB is valid only for packets to be forwarded. 
Examples 
# Enable the caching function of the IPv6 FIB. 
<Sysname> system-view 
[Sysname] ipv6 fibcache 
ipv6 icmp-error 
Syntax 
ipv6 icmp-error { bucket bucket-size | ratelimit interval } * 
undo ipv6 icmp-error 
View 
System view 
Default Level 
2: System level 
Parameters 
bucket bucket-size: Number of tokens in a token bucket, in the range of 1 to 200. 
ratelimit interval: Update period of the token bucket in milliseconds, in the range of 0 to 2,147,483,647. 
The update period “0” indicates that the number of ICMPv6 error packets sent is not restricted. 
Description 
Use the ipv6 icmp-error command to configure the size and update period of a token bucket. 
Use the undo ipv6 icmp-error command to restore the defaults. 
By default, the size is 10 and the update period is 100 milliseconds. That is, at most 10 ICMPv6 error 
packets can be sent within these 100 milliseconds.