Cisco ASR 1000 Series Configuration Guide

AckHold 0 0 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 0 snduna: 0 sndnxt: 0 sndwnd: 0
irs: 0 rcvnxt: 0 rcvwnd: 4128 delrcvwnd: 0
SRTT: 0 ms, RTTO: 2000 ms, RTV: 2000 ms, KRTT: 0 ms
minRTT: 60000 ms, maxRTT: 0 ms, ACK hold: 200 ms
Flags: passive open, higher precedence, retransmission timeout
TCB is waiting for TCP Process (67)
Datagrams (max data segment is 516 bytes):
Rcvd: 6 (out of order: 0), with data: 0, total data bytes: 0
Sent: 0 (retransmit: 0, fastretransmit: 0), with data: 0, total data
bytes: 0
Cisco Software Modularity
The following sample output from the show tcp tcb command displays a Software Modularity image:
Example:
Device# show tcp tcb 0x1059C10
Connection state is ESTAB, I/O status: 0, unread input bytes: 0
Local host: 10.4.2.32, Local port: 23
Foreign host: 10.4.2.39, Foreign port: 11000
VRF table id is: 0
Current send queue size: 0 (max 65536)
Current receive queue size: 0 (max 32768) mis-ordered: 0 bytes
Event Timers (current time is 0xB9ACB9):
Timer Starts Wakeups Next(msec)
Retrans 6 0 0
SendWnd 0 0 0
TimeWait 0 0 0
AckHold 8 4 0
KeepAlive 11 0 7199992
PmtuAger 0 0 0
GiveUp 0 0 0
Throttle 0 0 0
irs: 1633857851 rcvnxt: 1633857890 rcvadv: 1633890620 rcvwnd: 32730
iss: 4231531315 snduna: 4231531392 sndnxt: 4231531392 sndwnd: 4052
sndmax: 4231531392 sndcwnd: 10220
SRTT: 84 ms, RTTO: 650 ms, RTV: 69 ms, KRTT: 0 ms
minRTT: 0 ms, maxRTT: 200 ms, ACK hold: 200 ms
Keepalive time: 7200 sec, SYN wait time: 75 sec
Giveup time: 0 ms, Retransmission retries: 0, Retransmit forever: FALSE
State flags: none
Feature flags: Nagle
Request flags: none
Window scales: rcv 0, snd 0, request rcv 0, request snd 0
Timestamp option: recent 0, recent age 0, last ACK sent 0
Datagrams (in bytes): MSS 1460, peer MSS 1460, min MSS 1460, max MSS 1460
Rcvd: 14 (out of order: 0), with data: 10, total data bytes: 38
Sent: 10 (retransmit: 0, fastretransmit: 0), with data: 5, total data bytes: 76
Header prediction hit rate: 72 %
Socket states: SS_ISCONNECTED, SS_PRIV
Read buffer flags: SB_WAIT, SB_SEL, SB_DEL_WAKEUP
Read notifications: 4
Write buffer flags: SB_DEL_WAKEUP
Write notifications: 0
Socket status: 0
Step 2
show tcp brief [all | numeric]
(Optional) Displays addresses in IP format.
Use the show tcp brief command to display a concise description of TCP connection endpoints. Use the optional all
keyword to display the status for all endpoints with addresses in a Domain Name System (DNS) hostname format. If
IP Application Services Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
34
Configuring TCP
Verifying TCP Performance Parameters

Cisco ASR 1000 Series Specifications

General

Brand	Cisco
Model	ASR 1000 Series
Category	Network Router
Language	English