HPE 5920 series User Manual

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[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] tcp mss 300
tcp path-mtu-discovery
Use tcp path-mtu-discovery to enable TCP path MTU discovery.
Use undo tcp path-mtu-discovery to disable TCP path MTU discovery.
Syntax
tcp path-mtu-discovery [ aging age-time | no-aging ]
undo tcp path-mtu-discovery
Default
TCP path MTU discovery is disabled.
Views
System view
Predefined user roles
network-admin
Parameters
aging age-time: Specifies the aging time for the path MTU, in the range of 10 to 30 minutes. The
default aging time is 10 minutes.
no-aging: Does not age out the path MTU.
Usage guidelines
After you enable TCP path MTU discovery, all new TCP connections detect the path MTU. The
device uses the path MTU to calculate the MSS to avoid IP fragmentation.
After you disable TCP path MTU discovery, the system stops all path MTU timers. The TCP
connections established later do not detect the path MTU, but the TCP connections previously
established still can detect the path MTU.
Examples
# Enable TCP path MTU discovery and set the path MTU aging time to 20 minutes.
<Sysname> system-view
[Sysname] tcp path-mtu-discovery aging 20
tcp syn-cookie enable
Use tcp syn-cookie enable to enable SYN Cookie to protect the device from SYN flood attacks.
Use undo tcp syn-cookie enable to disable SYN Cookie.
Syntax
tcp syn-cookie enable
undo tcp syn-cookie enable
Default
SYN Cookie is disabled.
Views
System view

HPE 5920 series Specifications

General

Brand	HPE
Model	5920 series
Category	Switch
Language	English