165
To enable TCP SYN Cookie:
Step Command Remarks
1.
Enter system view.
system-view
N/A
2.
Enable SYN Cookie.
tcp syn-cookie enable
The default setting is disabled.
Configuring the TCP buffer size
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure the size of TCP receive/send
buffer.
tcp window
window-size
The default buffer size is 64 KB.
Configuring TCP timers
You can configure the following TCP timers:
•
SYN wait timer
—TCP starts the SYN wait timer after sending a SYN packet. If no response packet
is received within the SYN wait timer interval, TCP fails to establish the connection.
•
FIN wait timer
—TCP starts the FIN wait timer when the state changes to FIN_WAIT_2. If no FIN
packet is received within the timer interval, TCP terminates the connection. If a FIN packet is
received, TCP changes connection state to TIME_WAIT. If a non-FIN packet is received, TCP restarts
the timer, and tears down the connection when the timer expires.
To configure TCP timers:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure TCP
timers.
•
Configure the TCP SYN wait timer:
tcp timer syn-timeout
time-value
•
Configure the TCP FIN wait timer:
tcp timer fin-timeout
time-value
By default:
•
The TCP SYN wait timer is 75
seconds.
•
The TCP FIN wait timer is 675
seconds.
Enabling sending ICMP error packets
Perform this task to enable sending ICMP error packets, including redirect, time-exceeded, and
destination unreachable packets.
•
ICMP redirect packets
A host that has only one default route sends all packets to the default gateway. The default
gateway sends an ICMP redirect packet to inform the host of a correct next hop by following these
rules:
{
The receiving and sending interfaces are the same.
Содержание MSR 2600 Series
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Страница 113: ...98 Figure 41 Creating a record d On the page that appears select IPv6 Host AAAA as the resource record type...
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Страница 170: ...155 Task Command Display FIB entries display fib vpn instance vpn instance name ip address mask mask length...