H3C Technologies H3C S7500E Series Switches - Manual (Page 139)

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z Size of the IPv6 TCP sending/receiving buffer.
Follow these steps to configure IPv6 TCP properties:
To do… Use the command… Remarks
Enter system view system-view —
Set the finwait timer
tcp ipv6 timer fin-timeout
wait-time
Optional
675 seconds by default.
Set the synwait timer
tcp ipv6 timer syn-timeout
wait-time
Optional
75 seconds by default.
Set the size of the IPv6 TCP
sending/receiving buffer
tcp ipv6 window size
Optional
8 KB by default.
Configuring ICMPv6 Packet Sending
Configuring the Maximum ICMPv6 Error Packets Sent in an Interval
If too many ICMPv6 error packets are sent within a short time in a network, network congestion may
occur. To avoid network congestion, you can control the maximum number of ICMPv6 error packets
sent within a specified time, currently by adopting the token bucket algorithm.
You can set the capacity of a token bucket, namely, the number of tokens in the bucket. In addition,
you can set the update interval of the token bucket, namely, the interval for restoring the configured
capacity. One token allows one ICMPv6 error packet to be sent. Each time an ICMPv6 error packet is
sent, the number of tokens in a token bucket decreases by one. If the number of ICMPv6 error packets
successively sent exceeds the capacity of the token bucket, the additional ICMPv6 error packets
cannot be sent out until the capacity of the token bucket is restored.
Follow these steps to configure the capacity and update interval of the token bucket:
To do… Use the command… Remarks
Enter system view system-view —
Configure the capacity
and update interval of
the token bucket
Ipv6 icmp-error { bucket
bucket-size | ratelimit
interval } *
Optional
By default, the capacity of a token bucket is 10 and
the update interval is 100 milliseconds. That is, at
most 10 IPv6 ICMP error packets can be sent
within 100 milliseconds.
The update interval “0” indicates that the number
of ICMPv6 error packets sent is not restricted.