Cisco Cisco Packet Data Gateway (PDG) Fehlerbehebungsanleitung
ACS Rulebase Configuration Mode Commands
▀ tcp mss
▄ Cisco ASR 5000 Series Command Line Interface Reference
OL-22947-02
tcp mss
This command configures the TCP Maximum Segment Size (MSS) in TCP SYN packets.
Important:
This command is only available in StarOS 8.1 and later releases.
Product
ACS
Privilege
Security Administrator, Administrator
Syntax
Removes the previously configured setting.
Removes the previously configured setting.
Specifies the TCP MSS value.
must be an integer from 496 through 65535.
Adds the TCP MSS if not present in the packet.
Limits the TCP MSS if present in the packet.
Usage
Using this command, TCP MSS can be limited if already present in the TCP SYN packets. If there are no
errors detected in IP header/TCP mandatory header and there are no mem allocation failures, TCP optional
header is parsed. If TCP MSS is present in the optional header and its value is greater than the configured
MSS value, the value present in the TCP packet is replaced with the configured one.
If the TCP optional header is not present in the SYN packet and there are no errors in already present TCP
header, the TCP MSS value configured will be inserted while sending the current packet out.
errors detected in IP header/TCP mandatory header and there are no mem allocation failures, TCP optional
header is parsed. If TCP MSS is present in the optional header and its value is greater than the configured
MSS value, the value present in the TCP packet is replaced with the configured one.
If the TCP optional header is not present in the SYN packet and there are no errors in already present TCP
header, the TCP MSS value configured will be inserted while sending the current packet out.
Example
The following command limits the TCP maximum segment size to
The following command limits the TCP maximum segment size to
, and if not present adds it to the packets: