Cisco Cisco IOS Software Release 12.4(2)T

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The TCP Applications Flags Enhancement feature enables the user to display additional flags with 
reference to TCP applications. There are two types of flags: status and option. The status flags indicate 
the status of TCP connections; for example, retransmission timeouts, application closed, and 
synchronized (SYNC) handshakes for listen. The additional flags indicate the state of set options; for 
example, whether or not a virtual private network (VPN) routing and forwarding (VRF) identification is 
set, whether or not a user is idle, and whether or not a keepalive timer is running.

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 

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This section contains the following task:

12.4(2)T

This feature was introduced.