Tips and Pitfalls: SAN Extension Tuner

Common Commands

show san-ext-tuner interface gx/y nport pwwn pwwn vsan vsan counters

Example:

MDS1(config)# san-ext-tuner enable
MDS1(config)# iscsi enable
MDS1(config)# iscsi enable module 2
MDS1(config)# zone default-zone permit vsan 503
MDS1(config)# int iscsi 2/2
MDS1(config-if)# no shut
MDS1# san-ext-tuner
MDS1(san-ext)# nwwn 10:00:00:00:00:00:00:00
MDS1(san-ext)# nport pwwn 11:11:11:11:11:11:11:11 vsan 503 interface g2/2
MDS1(san-ext-nport)# exit
MDS1(san-ext)# exit
MDS1# show san-ext-tuner nports
----------------------------------------------------------------------------
Interface           NODE NAME                PORT NAME                VSAN
----------------------------------------------------------------------------
GigabitEthernet2/2  10:00:00:00:00:00:00:00  11:11:11:11:11:11:11:11  503
MDS1# fcping pwwn 22:22:22:22:22:22:22:22 vsan 503
28 bytes from 22:22:22:22:22:22:22:22 time = 401523 usec
28 bytes from 22:22:22:22:22:22:22:22 time = 200686 usec
28 bytes from 22:22:22:22:22:22:22:22 time = 200733 usec
28 bytes from 22:22:22:22:22:22:22:22 time = 200747 usec
28 bytes from 22:22:22:22:22:22:22:22 time = 200814 usec
5 frames sent, 5 frames received, 0 timeouts
Round-trip min/avg/max = 200686/240900/401523 usec

Key Points / Pitfalls

  • Configuration is not stored in NVRAM so you must re-configure it after reboot
  • You must zone nport pwwn’s involved in SET
  • iSCSI has to be enabled, iSCSI port enabled
  • Best to make a vsan for SET and use default zone permit
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