System information

4
Configuring iSAN Connections
4-9
Configuring TCP Ports for iFCP
6. Specify the number of ACKs that trigger Fast Retransmit or Fast
Recovery using the Threshold field. Valid values are between 8 to
128, with a default of 8. Larger values reduce retransmissions by
causing the SAN Router to wait longer for retransmitted packets
to arrive. This may delay the detection of dropped packets.
Setting the iFCP Parameters
1. To set the port as iFCP, select iFCP from the iFCP/iSCSI
parameters field.
2. Specify the IP address. This is the iFCP/iSCSI IP address that will
be used for this port after the next port reset or system reset.
NOTE: This IP address must be in a subnet different from the SAN
Router’s inband subnet.
3. Specify the Subnet mask. This is the subnet mask to use for this
port after the next port reset or system reset.
4. Specify the Next Hop Gateway Address.
This is the gateway address to use for this port after the next
system reset. TCP ports act as end nodes (hosts) attached to the
WAN, and therefore may have a different gateway than the
default gateway used by UDP ports connecting to the local
mSAN.
5. Specify the internal IP address.
The internal IP address is used with the SAN Router's inband IP
address for internal control. The TCP port acts as a proxy between
the SAN Router's internal network and the external WAN
network.
NOTE: The internal address must be in the same subnet as the SAN
Router's inband IP address.
6. Select the iFCP tab from the Advanced TCP Configuration dialog
box (refer to
Figure 4-4) to specify the iFCP parameters: