Brocade Network Advisor SAN User Manual v12.3.0 - Manual (Page 1191)

Brocade Network Advisor SAN User Manual 1139
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Flow Monitor
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Flow Monitor limitations
The following limitations apply to all Flow Monitor flows:
• Only one active learned flow is supported per ASIC.
• Only supports learned flows on 16 Gbps-capable FC platforms.
• For scsiread, scsiwrite, and scsirdwr frame type parameters, only monitors SCSI 6-, 10-, 12-,
and 16-bit Read and Write values. Flow Monitor cannot monitor Read Long and Write Long
values.
• Flow Monitor is not supported on ports with Encryption or Compression enabled.
• Flow Monitor can monitor IFL flows only on EX_Ports in an FC router.
• Flow Monitor cannot monitor Inter-Fabric Link (IFL) flows on E_Ports or F_Ports.
• Flow Monitor cannot monitor flows that are using frame redirection for encryption.
• You cannot convert Flow Monitor flows to Fabric OS 7.1.x flow performance monitors.
• The calculated Rx and Tx frame size values displayed in the output are accurate within a range
of -4 through +8 bytes. For example, a frame size value of 256 bytes may actually be anywhere
from 252 to 264 bytes.
The following restrictions apply to parameter usage in Flow Monitor flow definitions:
• You cannot use the LUN and Bidirectional parameters in a flow definition.
• You cannot use the Frame Type, LUN, and Bidirectional parameters for learned flows.
• Flow creation is not allowed if Advanced Performance Monitor (APM) or Port Mirroring is
enabled. Similarly, APM and Port Mirroring-related operations are not allowed if any flow (active
or defined) is present on the switch.
The following limitations apply to 16 Gbps-capable FC platforms, including the FC8-32E and
FC8-48E blades:
• They support a maximum of 2 flows defined using a combination of ingress port and frame
type parameters per ASIC chip.
• Each port supports a maximum of 12 flows defined using both egress port and frame type
parameters.
• Flow Monitor can only monitor flows that are using EX_Ports.
The following limitations apply to 8 Gbps-capable FC platforms and blades:
• You cannot create a flow definition using both ingress port and frame type parameters.
• Each port supports a maximum of 12 flows defined using both egress port and frame type
parameters, except for the following Fabric OS devices, which only support a maximum of 8
flows per port.
- 24-port, 8 Gbps FC Switch
- 32-port, 8 Gbps FC Switch
- 64-port, 8 Gbps FC Switch
- Embedded 12-port, 8 Gbps Switch
- Embedded 24-port, 8 Gbps Switch
- Embedded 16-port, 8 Gbps Switch
- Embedded 24-port, 8 Gbps Switch
- 8 Gbps Extension Switch