Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1311)

Brocade Network Advisor SAN + IP User Manual 1239
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FCIP configuration guidelines
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Compression mode
More aggressive compression modes can be used for asynchronous mirroring. For synchronous
mirroring, only hardware or standard compression should be used. This is because more
aggressive algorithms work by receiving additional frames to find compressible patterns on larger
blocks of data. The time it takes to read in these additional frames add latency, which may not be
tolerated by synchronous mirroring. Set compression modes on the Add FCIP Tunnel dialog box.
Circuit Keep Alive Time Out values
The circuit Keep Alive Time Out value, located on the Transmission tab of FCIP Circuit Advanced
Settings dialog box, should be less than the protocol timeout for the application being extended.
This allows circuit failover to be non-disruptive. By default, the circuit keep alive is 10 seconds
(10000 ms) and 1 second (1000 ms) for FICON. Set this to 6 seconds (6000 ms) for IBM
peer-to-peer remote copy (PPRC). All other applications should use the default.
SRDF considerations
Use SRDF/S SiRT (Single Roundtrip) or SRDF/A with FCIP-FW but not both. Using SRDF/A and
SRDF/S on the same remote adapter (RA) ports on the array is not recommended. Use different
VE_Ports for the tunnels, as if the tunnel destinations are different. If there is only one destination
(SRDF/A and SRDF/S are going to the same place), isolate traffic from the SRDF/A and SRDF/S RA
ports using TI zones and configure the tunnels accordingly. Note that there may be differences in
bandwidth, Fast Write, and compression mode tunnel parameters.
FCIP configuration guidelines
FCIP configuration always involves two or more Extension Switches. The following should take place
first before you configure a working FCIP connection from the Management application:
• The WAN link should be provisioned and tested for integrity.
• Cabling within the data center should be completed.
• Equipment should be physically installed and powered on.
• The Management application must have management port access to the Extension Switches.
• The Management application must be able to discover the fabrics the contain the Extension
Switches.
• The Extension Switches should be physically connected to the IP network they will be using to
pass data, and the connection should be active and working.
• Identify all the devices in the data path between the Extension Switches, including Ethernet
switches, Ethernet routers, firewalls, and common carrier equipment. A network diagram is
very helpful. Support engineers may ask you to provide a network diagram when
troubleshooting problems.
HP Continuous Access EVA Hybrid No
* OSTP Tape Tape Yes (required for OSTP)
TABLE 121 Using Fast Write for extended applications
Manufacturer RDR Application Platform Type Use Fast Write