Specifications

3-377
Cisco Wide Area Application Services Command Reference
OL-11817-01
Chapter 3 CLI Commands
(config) tcp
(config) tcp
To configure TCP parameters on a WAAS device, use the tcp global configuration command. To disable
TCP parameters, use the no form of this command.
tcp cwnd-base segments
tcp ecn enable
tcp increase-xmit-timer-value value
tcp init-ss-threshold value
tcp keepalive-probe-cnt count
tcp keepalive-probe-interval seconds
tcp keepalive-timeout seconds
tcp memory-limit low-water-mark low high-water-mark-pressure high
high-water-mark-absolute absolute
Syntax Description cwnd-base Sets initial send congestion window in segments.
segments Initial send congestion window segments (1–10).
ecn enable Enables TCP explicit congestion notification.
increase-xmit-timer-value Specifies the factor (1-3) used to modify the length of the retransmit
timer by 1 to 3 times the base value determined by the TCP algorithm.
Note Modify this factor with caution. It can improve throughput when
TCP is used over slow reliable connections but should never be
changed in an unreliable packet delivery environment.
value Retransmit multiple (1–3).
init-ss-threshold Sets initial slow-start threshold value.
value Slow-start threshold value.
keepalive-probe-cnt Specifies the length of time that the WAAS device keeps an idle
connection open.
count Number of probe counts (1–10).
keepalive-probe-interval Specifies the number of times that the WAAS device retries a
connection.
seconds Keepalive probe interval in seconds (1–300).
keepalive-timeout Specifies the length of time that the WAAS device keeps a connection
open before disconnecting.
seconds Keepalive timeout in seconds (1–3600).
memory-limit Specifies the system TCP memory usage limit (including send and
receive buffer usage of all connections).
Caution To prevent TCP buffer overflow, do not modify the default
values unless you are sure of the procedure.