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Use the undo session aging-time command to restore the default. If no keyword is specified, the
command restores the session aging times for all protocol states to the defaults.
The defaults value is 30 seconds.
Examples
# Set the aging time for TCP sessions in the SYN_SENT or SYN_RCV state to 60 seconds.
<Sysname> system-view
[Sysname] session aging-time syn 60
session checksum
Syntax
session checksum { all | { icmp | tcp | udp } * }
undo session checksum { all | { icmp | tcp | udp } * }
View
System view
Default level
2: System level
Parameters
all: Enables checksum verification for TCP, UDP, and ICMP packets.
icmp: Enables checksum verification for ICMP packets.
tcp: Enables checksum verification for TCP packets.
udp: Enables checksum verification for UDP packets.
Description
Use the session checksum command to enable checksum verification for protocol packets.
Use the undo session checksum command to disable checksum verification.
By default, checksum verification is disabled.
Examples
# Enable checksum verification for UDP packets.
<Sysname> system-view
[Sysname] session checksum udp
session persist acl
Syntax
session persist acl acl-number [ aging-time time-value ]
undo session persist
View
System view
Default level
2: System level
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