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3–Viewing Router Information
iSCSI Ports
ISR645610-00 B 3-21
Target TCP Port Number identifies the TCP port number the router
uses to receive iSCSI target commands. The iSCSI community uses
TCP port number 3260 by default. If you change this TCP port number,
you must also change all corresponding iSCSI initiators connecting to
this iSCSI target port.
IPv6 Settings include the following:
Select the Enable IPv6 Window Scaling check box to use this setting.
If enabled, select the Scale Factor (valid values are 0–5).
IPv6 Target TCP Port Number identifies the TCP port number the
router uses to receive iSCSI target commands. The iSCSI community
uses TCP port number 3260 by default. If you change this TCP port
number, you must also change all corresponding iSCSI initiators
connecting to this iSCSI target port.
Select a TCP Max Window Size of either 8192, 16384, or 32768.
Select one of the following Jumbo Frame options to indicate the MTU for
router frames:
Jumbo sets the port to support a 9000-byte MTU.
Normal sets the port to support 1500-byte MTU.
Other enables the text entry box so that you can specify a different
MTU value.
Max Burst Length specifies the iSCSI maximum burst length, which ranges
from 512 to 262144 bytes, depending on iSCSI port configuration.
Max First Burst Length specifies the iSCSI maximum first burst length,
which ranges from 512 to 262144 bytes, depending on the iSCSI port
configuration.
Security Settings include the following:
Enable Header Digest enables or disables support for iSCSI header
digest. Header digest is an ISCSI feature that adds a validity check
field to iSCSI protocol data unit (PDU) headers to verify that no
corruption has occurred during transmission of the PDU header. The
iSR6152 router supports header digest in its hardware to maximize
performance.
Select the check box to enable this option; clear the check box to
disable it.
NOTE:
You should specify an MTU size greater than 1500 only when the
router is connected to a 1000Mbps Ethernet network.