HP Cisco Nexus 5000 Cisco MDS 9000 Family CLI Configuration Guide - Release 4. - Page 1038

Configuring the SAN Extension Tuner Chapter 42 Configuring the SAN Extension Tuner Send documentation comments to [email protected] • Configuring the Virtual N Port, page 42-5 • Assigning the SCSI Read/Write, page 42-5 • Assigning SCSI Tape Read/Write, page 42-7 • Configuring a Data Pattern, page 42-8 Tuning the FCIP Link To tune the required FCIP link, follow these steps: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Configure the nWWN for the virtual N ports on the switch. Enable iSCSI on the interfaces on which you want to create the N ports. Configure the virtual N ports on either side of the FCIP link. Ensure that the virtual N ports are not visible to real initiators in the SAN. You can use zoning (see Chapter 24, "Configuring and Managing Zones") or VSANs (see Chapter 20, "Configuring and Managing VSANs") to segregate the real initiators. Ensure that the zoning configuration is setup to allow the virtual N-ports to communicate with each other. Start the SCSI read and write I/Os. Add more N ports (as required) to other Gigabit Ethernet ports in the switch to obtain maximum throughput. One scenario that may require additional N ports is if you use FCIP PortChannels. Enabling the Tuner The tuning feature is disabled by default in all switches in the Cisco 9000 Family. When you enable this feature, tuning is globally enabled for the entire switch. To enable the tuning feature, follow these steps: Step 1 Step 2 Command switch# config t switch(config)# feature san-ext-tuner switch(config)# no feature san-ext-tuner Purpose Enters configuration mode. Enables tuning. Removes the currently applied tuning configuration and disables tuning (default). Configuring nWWN To configure the nWWNs for the tuner in this switch, follow these steps: Step 1 Step 2 Command switch# san-ext-tuner switch(san-ext)# switch(san-ext)# nWWN 10:00:00:00:00:00:00:00 Purpose Enters the SET configuration submode. Configures the nWWN for the SAN extension tuner. 42-4 Cisco MDS 9000 Family CLI Configuration Guide OL-18084-01, Cisco MDS NX-OS Release 4.x