Configuring Icmpv6 Packet Sending; Configuring The Maximum Icmpv6 Error Packets Sent In An Interval - H3C S5500-SI Series Operation Manual

Operation Manual – IPv6
H3C S5500-SI Series Ethernet Switches
Enter system view
Set the finwait timer of
IPv6 TCP packets
Set the synwait timer of
IPv6 TCP packets
Set the size of the IPv6
TCP sending/receiving
buffer

1.7 Configuring ICMPv6 Packet Sending

1.7.1 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 period of the token bucket, namely, the interval for
updating the number of tokens in the token bucket to 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 1. If the number of ICMPv6
error packets successively sent exceeds the capacity of the token bucket, subsequent
ICMPv6 error packets cannot be sent out until the number of tokens in the token bucket
is updated and new tokens are added to the bucket.
Follow these steps to configure the capacity and update period of the token bucket:
To do...
Enter system view
Configure the
capacity and
update period of
the token bucket
To do...
system-view
tcp ipv6 timer
fin-timeout wait-time
tcp ipv6 timer
syn-timeout wait-time
tcp ipv6 window size
Use the
command...
system-view
ipv6 icmp-error
{ bucket bucket-size
| ratelimit interval } *
Chapter 1 IPv6 Basics Configuration
Use the command...
—
Optional
By default, the capacity of a token
bucket is 10 and the update period is
100 milliseconds. That is, at most 10
IPv6 ICMP error packets can be sent
within these 100 milliseconds.
The update period "0" indicates that the
number of ICMPv6 error packets sent
is not restricted.
1-21
Remarks
—
Optional
675 seconds by default.
Optional
75 seconds by default.
Optional
8 KB by default.
Remarks