HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Conf - Page 104

Configuring ICMPv6 packet sending, Configuring the maximum ICMPv6 error packets sent in an interval

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• 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: Step 1. Enter system view. 2. Set the synwait timer. 3. Set the finwait timer. 4. Set the size of the IPv6 TCP sending/receiving buffer. Command Remarks system-view N/A tcp ipv6 timer syn-timeout wait-time Optional. 75 seconds by default. Optional. tcp ipv6 timer fin-timeout wait-time 675 seconds by default. tcp ipv6 window size Optional. 8 KB by default. Configuring ICMPv6 packet sending 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 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, the interval for restoring 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 one. If the number of ICMPv6 error packets successively sent exceeds the capacity of the token bucket, the additional ICMPv6 error packets cannot be sent out until the capacity of the token bucket is restored. To configure the capacity and update interval of the token bucket: Step 1. Enter system view. Command system-view Remarks N/A 96

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96
•
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:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Set the synwait timer.
tcp ipv6 timer syn-timeout
wait-time
Optional.
75 seconds by default.
3.
Set the finwait timer.
tcp ipv6 timer fin-timeout
wait-time
Optional.
675 seconds by default.
4.
Set the size of the IPv6 TCP
sending/receiving buffer.
tcp ipv6 window
size
Optional.
8 KB by default.
Configuring ICMPv6 packet sending
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 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, the interval for restoring 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 one. If the number of ICMPv6 error packets successively sent
exceeds the capacity of the token bucket, the additional ICMPv6 error packets cannot be sent out until
the capacity of the token bucket is restored.
To configure the capacity and update interval of the token bucket:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A