Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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43-5
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 43 Advanced Fibre Channel Features and Concepts
World Wide Names
Verifying Configured fctimer Values
Use the show fctimer command to display the configured fctimer values. The following example
displays the configured global TOVs:
switch# show fctimer
F_S_TOV D_S_TOV E_D_TOV R_A_TOV
----------------------------------------
5000 ms 5000 ms 2000 ms 10000 ms
Note The F_S_TOV constant, though not configured, is displayed in the output of the show fctimer command.
The following example displays the configured TOV for VSAN 10:
switch# show fctimer vsan 10
vsan no. F_S_TOV D_S_TOV E_D_TOV R_A_TOV
-------------------------------------------------
10 5000 ms 5000 ms 3000 ms 10000 ms
World Wide Names
The world wide name (WWN) in the switch is equivalent to the Ethernet MAC address. As with the MAC
address, you must uniquely associate the WWN to a single device. The principal switch selection and
the allocation of domain IDs rely on the WWN.
Cisco Nexus 5000 Series switches support three network address authority (NAA) address formats
(see Table 43-1).
Caution Changes to the world-wide names should be made by an administrator or individual who is completely
familiar with switch operations.
This section includes the following topics:
• Verifying WWN Information, page 43-6
• Link Initialization WWN Usage, page 43-6
• Configuring a Secondary MAC Address, page 43-6
Table 43-1 Standardized NAA WWN Formats
NAA Address NAA Type WWN Format
IEEE 48-bit address Type 1 = 0001b 000 0000 0000b 48-bit MAC address
IEEE extended Type 2 = 0010b Locally assigned 48-bit MAC address
IEEE registered Type 5 = 0101b IEEE company ID: 24 bits VSID: 36 bits