Port Mirroring Considerations - Brocade Communications Systems 8 Troubleshooting And Diagnostics Manual

Port mirroring considerations

Before creating port mirror connections, consider the following limitations:
•
•
•
•
•
•
•
•
•
The Brocade 4100, 4900, 7500, 7500E, and 7600 switches, the Brocade 48000 director, and the
FA4-18, FC10-6, FC4-16IP, FC4-48, and FR4-18i blades have the following considerations:
•
Fabric OS Troubleshooting and Diagnostics Guide
53-1001769-01
A mirror port can be any port on the same switch as the source identifier port.
Only one domain can be mirrored. After a domain is defined, only mirror ports on the defined
domain can be used. The first connection defines the restriction on the domain, which can be
either the local domain or a remote domain.
A switch that is capable of port mirroring can support a minimum of one and a maximum of
three mirror connections.Refer to
connections your switch or blade can support.
Mirror port bandwidth limits mirror connections.
Deleting a port mirroring connection with In Order Deliver (IOD) enabled causes frame drop
between two endpoints.
Using the firmware download procedure to downgrade to previous Fabric OS releases that do
not support port mirroring requires that you remove all the port mirroring connections. If you
downgrade to a previous versions of Fabric OS, you cannot proceed until the mirroring
connections are removed.
Port Mirroring is supported with Virtual Fabrics with the limitation that you cannot have FCR
enabled within the same 8-port group.
If you have NPIV or 10-bit address mode enabled on a Brocade 300, 5300, 5410, 5450, 5460,
5470, 5480, 7800, and the M5424 platforms, all devices from the same NPIV port or 10-bit
addressing mode will hit the same mirror connection regardless of different AL_PAs since the
validation is done only for the first 16-bits of the SID/DID.
Port mirroring is not supported for the shared area ports of 48-port blades in the default
switch. However, when the ports are assigned to a 10-bit address logical switch, port mirroring
is supported.
If you define multiple mirror connections for the same F_PORT (SID or DID), all the connections
must share the same mirror port.
Table 9 on page 42 to determine the number of mirror
3
Port mirroring
41