1-13
To do… Use the command… Remarks
Configure a static IPv6 route
ipv6 route-static ipv6-address
prefix-length [ interface-type
interface-number]
nexthop-address
Required
By default, no static IPv6 route
is configured.
Configuring IPv6 TCP Properties
The IPv6 TCP properties you can configure include:
z synwait timer: When a SYN packet is sent, the synwait timer is triggered. If no response packet is
received before the synwait timer expires, the IPv6 TCP connection establishment fails.
z finwait timer: When the IPv6 TCP connection status is FIN_WAIT_2, the finwait timer is triggered. If
no packet is received before the finwait timer expires, the IPv6 TCP connection is terminated. If FIN
packets are received, the IPv6 TCP connection status becomes TIME_WAIT. If other packets are
received, the finwait timer is reset from the last packet and the connection is terminated after the
finwait timer expires.
z Size of IPv6 TCP receiving/sending buffer.
Follow these steps to configure IPv6 TCP properties:
To do… Use the command… Remarks
Enter system view
system-view
—
Set the finwait timer of IPv6
TCP packets
tcp ipv6 timer fin-timeout
wait-time
Optional
675 seconds by default.
Set the synwait timer of IPv6
TCP packets
tcp ipv6 timer syn-timeout
wait-time
Optional
75 seconds by default.
Configure the size of IPv6 TCP
receiving/sending buffer
tcp ipv6 window size
Optional
8 KB by default.
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:
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