Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 151)

CLI display of IP traffic statistics - Layer 2 switch (Continued) TABLE 29
Field Description
input errors This information is used by Brocade customer support.
in segments The number of TCP segments received by the device.
out segments The number of TCP segments sent by the device.
retransmission The number of segments that this device retransmitted because the
retransmission timer for the segment had expired before the device at the other
end of the connection had acknowledged receipt of the segment.
Disabling IP checksum check
The disable-hw-ip-checksum-check command traps a packet with bad checksum to the CPU.
Previously, if the packet processor detected a packet with, for example, the checksum 0xFFFF, it would
treat it as a bad checksum even if it was correct and it would drop the packet. Now, the command
disable-hw-ip-checksum-check traps the packet at the CPU and if the checksum is correct, it
forwards the packet.
To set disable hardware ip checksum check for all ports, enter the following command.
device# disable-hw-ip-checksum-check
disable-ip-header-check set for all ports
To clear disable hardware ip checksum check on all ports, enter the following command.
device# no disable-hw-ip-checksum-check ethernet 13
disable-hw-ip-checksum-check cleared for ports the 13 to 24
To set disable hardware ip checksum check on for example, port range 0-12, enter the following
command.
device# disable-hw-ip-checksum-check ethernet 2
disable-ip-header-check set for ports ethe 1 to 12
To set disable hardware ip checksum check on, for example, port range 13-24, enter the following
command.
device# disable-hw-ip-checksum-check ethernet 22
disable-ip-header-check set for ports ethe 13 to 24
To clear disable hardware ip checksum check on, for example, port range 13-24, enter the following
command.
device# no disable-hw-ip-checksum-check ethernet 13
disable-hw-ip-checksum-check cleared for ports the 13 to 24
NOTE
The port range could be any consecutive range, it may not necessarily be a decimal number.
Syntax: [no] disable-hw-ip-checksum-check ethernet portnum
Disabling IP checksum check
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 151
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