3Com Switch 4800G 24-Port - Displaying and Maintaining IP Performance

132 CHAPTER 13: IP PERFORMANCE CONFIGURATION
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■ The device stops sending "network unreachable" and "source route failure"
ICMP error packets after sending ICMP destination unreachable packets is
disabled. However, other destination unreachable packets can be sent
normally.
■ The device stops sending "TTL timeout" ICMP error packets after sending ICMP
timeout packets is disabled. However, "reassembly timeout" error packets will
be sent normally.
Displaying and
Maintaining IP
Performance
Disable sending ICMP timeout packets undo ip ttl-expires Required
Enabled by default.
Disable sending ICMP destination unreachable
packets
undo ip unreachables Required
Enabled by default.
To do… Use the command… Remarks
To do… Use the command… Remarks
Display current TCP connection state display tcp status Available in
any view
Display TCP connection statistics display tcp statistics
Display UDP statistics display udp statistics
Display IP packets statistics display ip statistics
Display ICMP flows statistics display icmp statistics
Display socket information display ip socket [ socktype
sock-type ] [ task-id socket-id ]
Display FIB forward information display fib [ | { begin | include |
exclude } string | acl acl-number |
ip-prefix ip-prefix-name ]
Display FIB forward information matching
the specified destination IP address
display fib ip-address1 [{mask1
| mask-length1 } [ ip-address2
{ mask2 | mask-length2 } |
longer ] | longer ]
Display statistics about the FIB items display fib statistics
Clear statistics of IP packets reset ip statistics Available in
user view
Clear statistics of TCP connections reset tcp statistics
Clear statistics of UDP flows reset udp statistics