RadiSys SEG-100 Administration Manual
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10Advanced Settings169Other Idle LifetimeSpecifies in seconds how long flows using an unknown protocol can remain idle before theyare closed.Device:/> set Settings FlowTimeoutSettings FlowLifetimeOther=130Default: 130Length limit settingsThis section contains information about the size limits imposed on the protocols directlyunder IP level, such as TCP, UDP, and ICMP.The values specified here apply to the IP data contained in packets. In the case of Ethernet, asingle packet can contain up to 1,480 bytes of IP data without fragmentation. In addition tothat, there are 20 bytes of IP header and 14 bytes of Ethernet header, which totals themaximum media transmission unit on Ethernet networks of 1,514 bytes.Max TCP LengthSpecifies the maximum size of a TCP packet including the header. This value usually correlateswith the amount of IP data that can be accommodated in an unfragmented packet, since TCPusually adapts the segments it sends to fit the maximum packet size. However, this value mayneed to be increased by 20–50 bytes on some less common VPN systems.Device:/> set Settings LengthLimSettings MaxTCPLen=1480Default: 1,480Max UDP LengthSpecifies in bytes the maximum size of a UDP packet including the header. This value may wellneed to be quite high, since many real‐time applications use large, fragmented UDP packets. Ifno such protocols are used, the size limit imposed on UDP packets can probably be lowered to1,480 bytes.Device:/> set Settings LengthLimSettings MAxUDPLen=60000Default: 60,000Max ICMP LengthSpecifies in bytes the maximum size of an ICMP packet. ICMP error messages should neverexceed 600 bytes, although Ping packets can be larger if so requested. This value may belowered to 1,000 bytes if it is undesirable to use large Ping packets.Device:/> set Settings LengthLimSettings MaxICMPLen=10000Default: 10,000 |
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