R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide
151
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Configure the aging time for
dynamic path MTUs.
ipv6 pathmtu age age-time
Optional.
10 minutes by default.
Configuring IPv6 TCP properties
You can configure the following IPv6 TCP properties:
• 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.
• 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 a
FIN packet is received, the IPv6 TCP connection status becomes TIME_WAIT. If non-FIN packets are
received, the finwait timer is reset upon receipt of the last non-FIN packet and the connection is
terminated after the finwait timer expires.
• Size of the IPv6 TCP sending/receiving buffer.
To configure IPv6 TCP properties:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Set the IPv6 TCP timers.
• Set the synwait timer:
tcp ipv6 timer syn-timeout
wait-time
• Set the finwait timer:
tcp ipv6 timer fin-timeout
wait-time
Optional.
By default:
• The synwait timer is 75 seconds.
• The finwait timer is 675 seconds
by default.
3. Set the size of the IPv6 TCP
sending/receiving buffer.
tcp ipv6 window size
Optional.
8 KB by default.
Configuring ICMPv6 packet sending
This section describes how to configure ICMPv6 packet sending.
Configuring the maximum ICMPv6 error packets sent in an
interval
If too many ICMPv6 error packets are sent within a short period of time in a network, network congestion
might occur. To avoid network congestion, you can control the maximum number of ICMPv6 error
packets sent within a specific time by adopting the token bucket algorithm.
You can set the capacity of a token bucket to determine the number of tokens in the bucket. In addition,
you can set the update interval of the token bucket, that is, the interval for restoring the configured
capacity. One token allows one ICMPv6 error packet to be sent. Each time an ICMPv6 error packet is