Configuring Interop Mode 1 - Cisco Nexus 5500 Series NX-OS Configuration Manual

Switch Interoperability

Configuring Interop Mode 1

You can interop mode1 in Cisco SAN switches disruptively or nondisruptively.
Note Brocade's msplmgmtdeactivate command must explicitly be run prior to connecting from a Brocade
switch to either Cisco SAN switches or to McData switches. This command uses Brocade proprietary
frames to exchange platform information, which Cisco SAN switches or McData switches do not recognize.
Rejecting these frames causes the common E ports to become isolated.
Procedure
Step 1
Step 2
Step 3
Step 4
Cisco Nexus 5500 Series NX-OS SAN Switching Configuration Guide, Release 7.x
224
Command or Action
Place the VSAN of the E ports that
connect to the OEM switch in
interoperability mode.
Assign a domain ID in the range
of 97 (0x61) through 127 (0x7F).
Change the Fibre Channel timers
(if they have been changed from
the system defaults).
When making changes to the
domain, you may or may not need
to restart the Domain Manager
function for the altered VSAN.
Purpose
switch# configuration terminal
switch(config)# vsan database
switch(config-vsan-db)# vsan 1 interop 1
switch(config-vsan-db)# exit
This is an limitation imposed by the McData
Note
switches.
In Cisco SAN switches, the default is to request an ID from the
principal switch. If the preferred option is used, Cisco SAN
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 SAN 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
Note
N ports also change.
The Cisco SAN switches, Brocade, and McData FC
Note
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.
switch(config)# fctimer e_d_tov ?
<1000-100000> E_D_TOV in milliseconds(1000-100000)
switch(config)# fctimer r_a_tov ?
<5000-100000> R_A_TOV in milliseconds(5000-100000)
• Force a fabric reconfiguration with the disruptive option.
switch(config)# fcdomain restart disruptive vsan
1
or
Advanced Fibre Channel Features
OL-30895-01