CLI Guide
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.3(0.0) Introduced on the MXL platform.
Usage Information You can congure the amount of time for which the device must wait before it attempts to establish a TCP
connection. Using this capability, you can limit the wait times for TCP connection requests. Upon responding to the
initial SYN packet that requests a connection to the router for a specic service (such as SSH or BGP) with a SYN
ACK, the router waits for a period of time for the ACK packet to be sent from the requesting host that will
establish the TCP connection.
show ip tcp initial-time
Displays the interval that you congured for the device to wait before the TCP connection is attempted to be established.
Syntax
show ip tcp initial-time
Command Modes
EXEC
EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.3(0.0) Introduced on the MXL 10/40GbE Switch IO Module platform.
ip unreachables
Enable the generation of internet control message protocol (ICMP) unreachable messages.
Syntax
ip unreachables
To disable the generation of ICMP messages, use the no ip unreachables command.
Defaults Disabled.
Command Modes INTERFACE
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
610 IPv4 Routing