R2511-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V5)
277
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Configure a static path MTU
for a specified IPv6 address.
ipv6 pathmtu [ vpn-instance
vpn-instance-name ] ipv6-address
[ value ]
Not configured by default.
Configuring the aging time for dynamic path MTUs
After the path MTU from a source host to a destination host is dynamically determined (see "Configuring
path MTU discovery"), the source host sends subsequent packets to the destination host based on this
MTU. After the aging time expires, the dynamic path MTU is removed and the source host re-determines
a dynamic path MTU through the path MTU mechanism.
The aging time is invalid for a static path MTU.
To configure the aging time for dynamic path MTUs:
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 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.
3. Set the size of the IPv6 TCP
sending/receiving buffer.
tcp ipv6 window size
Optional.
8 KB by default.