Configuring Dwdm Links To Use R_Rdys; Extending Rdr Applications Over Fcip - Brocade Communications Systems WFT-2D User Manual

Configuring DWDM links to use R_RDYs

TDM requires that you configure DWDM links to use R_RDYs and not VC_RDYs. The only way to turn
off VC_RDYs is to start with QoS "OFF," and then turn on ISL R_RDY mode. Execute the following
Fabric OS commands on E_Ports (ISL connections).
1. Enter the following command to disable credit recovery on a port.
2. Enter the following command to set the speed for the link. Only speeds supported by the
3. Enter the following command to disable QoS.
4. Enter the following command to enable ISL R_RDY mode.
5. Enter the following command to disable trunking on the port.
6. Enter the following command to display port settings:

Extending RDR applications over FCIP

This section provides considerations for configuring tunnels and circuits when extending remote
data replication (RDR) applications over FCIP.
When to enable Fast Write
Enabling Fast Write depends on the application that you are extending over FCIP. Use the following
table to determine if Fast Write should be enabled for a tunnel configuration. Enable Fast Write
through the FCIP Tunnel Advanced Settings dialog box. Access this dialog box by selecting
Advanced Settings on the Add FCIP Tunnel dialog box.
TABLE 77
Manufacturer
IBM
IBM
IBM
IBM
IBM
EMC
EMC
EMC
EMC
Brocade Network Advisor SAN User Manual
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portcfgcreditrecovery --disable slot/port speed
installed SFP are supported. Use 0 to set back to automatic sensing mode.
portcfgspeed slot/port speed
portcfgqos --disable slot/port
portcfgislmode slot/port, 1
portcfgtrunkport slot/port, 0
portcfgshow
Using Fast Write for extended applications
RDR Application
Global Mirror (PPRC)
Metro Mirror
XIV
Global Mirror
Metro Mirror
SRDF/A
SRDF/S
SRDF Adaptive Copy
MirrorView
Connecting cascaded FICON fabrics over FCIP
Platform Type
DS Async
DS Sync
XIV Sync
SVC Async
SVC Sync
Symmetrix Async
Symmetrix Sync
Symmetrix Async
CLARiiON Async
22
Use Fast Write
No
No
Yes
No
No
Yes
Yes (SiRT disabled)
Yes
Yes
955