H3C Technologies H3C S5120 Series Switches - Manual (Page 220)

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To do… Use the command… Remarks
Enter system view system-view —
Enable sending of ICMP timeout packets ip ttl-expires enable
Required
Disabled by default.
Enable sending of ICMP destination
unreachable packets
ip unreachables enable
Required
Disabled by default.
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 Optimization
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 Available in any view
Display UDP statistics display udp statistics Available in any view
Display statistics of IP packets display ip statistics Available in any view
Display ICMP statistics display icmp statistics Available in any view
Display socket information
display ip socket [ socktype
sock-type ] [ task-id socket-id ]
Available in any view
Display FIB information
display fib [ | { begin | include |
exclude } regular-expression | acl
acl-number | ip-prefix
ip-prefix-name ]
Available in any view
Display FIB information matching
the specified destination IP
address
display fib ip-address [ mask |
mask-length ]
Available in any view
Clear statistics of IP packets reset ip statistics Available in user view
Clear statistics of TCP connections reset tcp statistics Available in user view
Clear statistics of UDP traffic reset udp statistics Available in user view
Currently, the S5120-SI series Ethernet switches do not support the display fib ip-prefix
ip-prefix-name command. That is, they do not display FIB entries matching a specified IP prefix list.