Configuring Interop Mode 1 - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Switch Interoperability
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Configuring Interop Mode 1

The interop mode1 in Cisco MDS 9000 Family switches can be enabled disruptively or nondisruptively.
Note Brocade's msplmgmtdeactivate command must explicitly be run prior to connecting from a Brocade
switch to either Cisco MDS 9000 Family switches or to McData switches. This command uses Brocade
proprietary frames to exchange platform information, which Cisco MDS 9000 Family switches or
McData switches do not understand. Rejecting these frames causes the common E ports to become
isolated.
To configure interop mode 1 in any switch in the Cisco MDS 9000 Family, follow these steps:
Place the VSAN of the E ports that connect to the OEM switch in interoperability mode.
Step 1
switch# config t
switch(config)# vsan database
switch(config-vsan-db)# vsan 1 interop 1
switch(config-vsan-db)# exit
switch(config)#
Note
Assign a domain ID in the range of 97 (0x61) through 127 (0x7F).
Step 2
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.
Note
Change the Fibre Channel timers (if they have been changed from the system defaults).
Step 3
Note
switch(config)# fctimer e_d_tov ?
<1000-100000>
switch(config)# fctimer r_a_tov ?
<5000-100000>
When making changes to the domain, you may or may not need to restart the Cisco MDS domain
Step 4
manager function for the altered VSAN.
Cisco MDS 9000 Family CLI Configuration Guide
30-16
You cannot enable interop modes on FICON-enabled VSANs.
This is an limitation imposed by the McData switches.
When changing the domain ID, the FC IDs assigned to N ports also change.
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.
E_D_TOV in milliseconds(1000-100000)
R_A_TOV in milliseconds(5000-100000)
Chapter 30 Advanced Features and Concepts
OL-18084-01, Cisco MDS NX-OS Release 4.x