Verifying Tcp Performance Parameters - Cisco ASR 1000 Series Configuration Manual

Configuring TCP
Command or Action
Step 5 ip mtu bytes
Example:
Device(config-if)# ip mtu 1492
Step 6
end
Example:
Device(config-if)# end

Verifying TCP Performance Parameters

SUMMARY STEPS
1. show tcp [line-number] [tcb address]
2. show tcp brief [all | numeric]
3. debug ip tcp transactions
4. debug ip tcp congestion
DETAILED STEPS
Step 1 show tcp [line-number] [tcb address]
Displays the status of TCP connections. The arguments and keyword are as follows:
• line-number—(Optional) Absolute line number of the Telnet connection status.
• tcb—(Optional) Transmission control block (TCB) of the Explicit Congestion Notification (ECN)-enabled
connection.
• address—(Optional) TCB hexadecimal address. The valid range is from 0x0 to 0xFFFFFFFF.
The following sample output from the show tcp tcb command displays detailed information about an ECN-enabled
connection that uses a hexadecimal address format:
Example:
Device# show tcp tcb 0x62CD2BB8
Connection state is LISTEN, I/O status: 1, unread input bytes: 0
Connection is ECN enabled
Local host: 10.10.10.1, Local port: 179
Foreign host: 10.10.10.2, Foreign port: 12000
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x4F31940):
Timer
Retrans
TimeWait
Starts Wakeups
0 0
0 0
IP Application Services Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
Verifying TCP Performance Parameters
Purpose
Sets the MTU size of IP packets, in bytes, sent on an interface.
Exits to global configuration mode.
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