Configuring The Maximum Number Of Ipv6 Icmp Error Packets Sent Within A Specified Time; Configuring The Hop Limit Of Icmpv6 Reply Packets - H3C S5100-SI Series Operation Manual

Operation Manual – IPv6 Management
H3C S5100-SI/EI Series Ethernet Switches
1.2.5 Configuring the Maximum Number of IPv6 ICMP Error Packets Sent
within a Specified Time
If too many IPv6 ICMP 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 IPv6 ICMP error packets sent within a specified time. Currently, the token
bucket algorithm is adopted.
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 IPv6 ICMP error packet to be sent. Each time an IPv6 ICMP error
packet is sent, the number of tokens in a token bucket decreases by 1. If the number of
the IPv6 ICMP error packets that are continuously sent out reaches the capacity of the
token bucket, the subsequent IPv6 ICMP error packets cannot be sent out until new
tokens are put into the token bucket based on the specified update frequency.
Follow these steps to configure the maximum number of IPv6 ICMP error packets sent
within a specified time:
To do...
Enter system view
Configure the
maximum number of
IPv6 ICMP error
packets sent within a
specified time

1.2.6 Configuring the Hop Limit of ICMPv6 Reply Packets

When sending an ICMPv6 reply packet, the device will fill a configurable value in the
Hop Limit field in the ICMPv6 reply packet header.
Follow these steps to configure the hop limit of ICMPv6 reply packets:
Enter system view
Configure the hop limit of
ICMPv6 reply packets
Use the command...
system-view
ipv6 icmp-error { bucket
bucket-size | ratelimit
interval }*
To do...
system-view
ipv6 nd hop-limit value
—
Optional
By default, the capacity of a
token bucket is 10 and the
update period to 100
milliseconds. That is, at most 10
IPv6 ICMP error packets can be
sent within an update period.
Use the command...
1-17
Chapter 1 IPv6 Configuration
Remarks
Remarks
—
Optional
64 by default.