Cisco MDS 9000 Series

To configure interop mode 1 in any switch in the Cisco MDS 9000 Family, follow these steps:
Step 1 Place the VSAN of the E ports that connect to the OEM switch in interoperability mode.
switch# config terminal
switch(config)# vsan database
switch(config-vsan-db)# vsan 1 interop 1
switch(config-vsan-db)# exit
switch(config)#
You cannot enable interop modes on FICON-enabled VSANs.
Note
Step 2 Assign a domain ID in the range of 97 (0x61) through 127 (0x7F).
This is an limitation imposed by the McData switches.
Note
switch(config)# fcdomain domain 100 preferred vsan 1
In Cisco MDS 9000 switches, the default is to request an ID from the principal switch. If the preferred option is used,
Cisco MDS 9000 switches request a specific ID, but still join the fabric if the principal switch assigns a different ID. If
the static option is used, the Cisco MDS 9000 switches do not join the fabric unless the principal switch agrees and assigns
the requested ID.
When changing the domain ID, the FC IDs assigned to N ports also change.
Note
Step 3 Change the Fibre Channel timers (if they have been changed from the system defaults).
The Cisco MDS 9000, Brocade, and McData FC Error Detect (ED_TOV) and Resource Allocation (RA_TOV)
timers default to the same values. They can be changed if needed. The RA_TOV default is 10 seconds, and the
ED_TOV default is 2 seconds. Per the FC-SW2 standard, these values must be the same on each switch within
the fabric.
Note
switch(config)# fctimer e_d_tov ?
<1000-4000> E_D_TOV in milliseconds(1000-4000)
switch(config)# fctimer r_a_tov ?
<5000-100000> R_A_TOV in milliseconds(5000-100000)
Step 4 When making changes to the domain, you may or may not need to restart the Cisco MDS domain manager function for
the altered VSAN.
• Force a fabric reconfiguration with the disruptive option.
switch(config)# fcdomain restart disruptive vsan 1
or
• Do not force a fabric reconfiguration.
switch(config# fcdomain restart vsan 1
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
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Advanced Features and Concepts
Configuring Interop Mode 1