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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 .
Table 25-2
Switch Feature
D_S_TOV
E_D_TOV
R_A_TOV
Trunking
Default zone
Zoning attributes
Zone propagation
VSAN
TE ports and
PortChannels
FSPF
Domain
reconfiguration
disruptive
Domain
reconfiguration
nondisruptive
Name server
IVR
Cisco MDS 9000 Family Configuration Guide
25-10
Changes in Switch Behavior When Interoperability Is Enabled (continued)
Changes if Interoperability Is Enabled
Verify that the Distributed Services Time Out Value timers match exactly.
Verify that the Error Detect Time Out Value timers match exactly.
Verify that the Resource Allocation Time Out Value timers match exactly.
Trunking is not supported between two different vendor's switches. This
feature may be disabled on a per port or per switch basis.
The default zone behavior of permit (all nodes can see all other nodes) or deny
(all nodes are isolated when not explicitly placed in a zone) may change.
Zones may be limited to the pWWN and other proprietary zoning methods
(physical port number) may be eliminated.
Brocade uses the cfgsave command to save fabric-wide zoning
Note
configuration. This command does not have any effect on Cisco MDS
9000 Family switches if they are part of the same fabric. You must
explicitly save the configuration on each switch in the Cisco MDS 9000
Family.
Some vendors do not pass the full zone configuration to other switches, only
the active zone set gets passed.
Verify that the active zone set or zone configuration has correctly propagated
to the other switches in the fabric.
Interop mode only affects the specified VSAN.
Interop modes cannot be enbled on FICON-enabled VSANs.
Note
TE ports and PortChannels cannot be used to connect Cisco MDS to non-Cisco
MDS switches. Only E ports can be used to connect to non-Cisco MDS
switches. TE ports and PortChannels can still be used to connect an Cisco MDS
to other Cisco MDS switches even when in interop mode.
The routing of frames within the fabric is not changed by the introduction of
interop mode. The switch continues to use src-id, dst-id, and ox-id to load
balance across multiple ISL links.
This is a switch-wide impacting event. Brocade and McData require the entire
switch to be placed in offline mode and/or rebooted when changing domain
IDs.
This event is limited to the affected VSAN. Only Cisco MDS 9000 Family
switches have this capability—only the domain manager process for the
affected VSAN is restarted and not the entire switch.
Verify that all vendors have the correct values in their respective name server
database.
IVR-enabled VSANs can be configured in no interop (default) mode or in any
of the interop modes.
Chapter 25
Advanced Features and Concepts
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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