Iscsi Listener Port; Tcp Tuning Parameters - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 42 Configuring iSCSI
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
To access these commands from the iSCSI interface, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface iscsi 4/1
switch(config-if)#
Cisco MDS switches support the following advanced features for iSCSI interfaces:
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iSCSI Listener Port

You can configure the TCP port number for the iSCSI interface that listens for new TCP connections.
The default port number is 3260. Once you change the TCP port number, the iSCSI port only accepts
TCP connections on the newly configured port.
See the

TCP Tuning Parameters

You can configure the following TCP parameters:
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OL-16184-01, Cisco MDS SAN-OS Release 3.x
iSCSI Listener Port, page 42-27
TCP Tuning Parameters, page 42-27
QoS, page 42-28
iSCSI Routing Modes, page 42-28
"Configuring TCP Listener Ports" section on page
Minimum retransmit timeout (See the
Keepalive timeout (See the
Maximum retransmissions (See the
Path MTU (See the "Path MTUs" section on page
SACK (SACK is enabled by default for iSCSI TCP configurations.) (See the
Acknowledgments" section on page
Window management (The iSCSI defaults are max-bandwidth is 1 Gbps, min-available-bandwidth
is 70 Mbps, and round-trip-time is 1 msec.) (See the
page 40-15.)
Buffer size (The iSCSI default send buffer size is 4096 KB) (See the
page 40-17.)
Window congestion monitoring (enabled by default and the default burst size is 50 KB) (See the
"Monitoring Congestion" section on page
Maximum delay jitter (enabled by default and the default time is 500 microseconds) (See the
"Estimating Maximum Jitter" section on page
Purpose
Enters configuration mode.
Selects the iSCSI interface on the switch.
"Minimum Retransmit Timeout" section on page
"Keepalive Timeout" section on page
"Maximum Retransmissions" section on page
40-14.)
40-14.)
"Window Management" section on
40-15.)
40-16.)
Cisco MDS 9000 Family CLI Configuration Guide
40-12.
40-13.)
"Selective
"Buffer Size" section on
Configuring iSCSI
40-13.)
40-14)
42-27