H3C S5500-SI Series Operation Manual

Also see for S5500-SI Series: Configuration Operation manual Configuration guide Configuration guide Configuration guide

Contents

H3C S5500-SI Series Operation Manual Manual pdf 22 page image

Operation Manual – IPv6H3C S5500-SI Series Ethernet Switches Chapter 1 IPv6 Basics Configuration1-21To do… Use the command… RemarksEnter system view system-view —Set the finwait timer ofIPv6 TCP packetstcp ipv6 timerfin-timeout wait-timeOptional675 seconds by default.Set the synwait timer ofIPv6 TCP packetstcp ipv6 timersyn-timeout wait-timeOptional75 seconds by default.Set the size of the IPv6TCP sending/receivingbuffertcp ipv6 window size Optional8 KB by default.1.7 Configuring ICMPv6 Packet Sending1.7.1 Configuring the Maximum ICMPv6 Error Packets Sent in an IntervalIf too many ICMPv6 error packets are sent within a short time in a network, networkcongestion may occur. To avoid network congestion, you can control the maximumnumber of ICMPv6 error packets sent within a specified time, currently by adopting thetoken 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 forupdating the number of tokens in the token bucket to the configured capacity. Onetoken allows one ICMPv6 error packet to be sent. Each time an ICMPv6 error packet issent, the number of tokens in a token bucket decreases by 1. If the number of ICMPv6error packets successively sent exceeds the capacity of the token bucket, subsequentICMPv6 error packets cannot be sent out until the number of tokens in the token bucketis 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… Use thecommand… RemarksEnter system view system-view —Configure thecapacity andupdate period ofthe token bucketipv6 icmp-error{ bucket bucket-size| ratelimit interval } *OptionalBy default, the capacity of a tokenbucket is 10 and the update period is100 milliseconds. That is, at most 10IPv6 ICMP error packets can be sentwithin these 100 milliseconds.The update period “0” indicates that thenumber of ICMPv6 error packets sentis not restricted.