Q-Logic ISR6142 manual Remote SAN Island Connectivity

2 – General Description Remote SAN Island Connectivity

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Remote SAN Island Connectivity

The iSR6142 router supports inter-connecting remote SAN islands (see

Figure 2-2).

Figure 2-2 Remote SAN Island Connectivity

This configuration has the following additional requirements:

„At least one FC port of iSR6142 connected to FC SAN.

„Accessibility between the iSCSI/GE (Gigabit Ethernet ports on the router) port IP addresses of remote router and iSCSI/GE port IP addresses of local routers.

„Accessibility between the remote iSR6142 management port IP address and local iSR6142 management port IP address.

When connecting SANs over long distances, you must determine the round-trip latencies between two router connections. You can discover these round-trip latencies using the ping command in CLI. (See iSR6142 Router CLI User's Guide.)

Using this round-trip latency number, you can determine the window scaling factor for GE (iSCSI) port, as described in Performance Tuning on page 3-4. By default, window scaling is set to 1 (64K) TCP window size.

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