Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1309)

Brocade Network Advisor SAN + IP User Manual 1237
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Connecting cascaded FICON fabrics over FCIP
27
• Start by configuring circuit 0, and then add additional circuits if desired.
• Be sure to select Verify IP Connectivity to test the connection between both switches. IP
connectivity is tested with the ping utility.
• Make changes to IP settings by selecting Advanced Settings to display the FCIP Circuit
Advanced Settings dialog box. Make changes to this dialog box only under direction of
network administrators.
9. After you complete tunnel and circuit configuration between the fabrics, merge the fabrics
using the Cascade FICON Fabrics Merge wizard by following procedures under”Cascaded
FICON fabric merge”
Chapter 30, “FICON Environments” .
10. Consider the following when merging fabrics:
• When merging fabrics, the primary fabric is the production fabric where disruption should
not occur. The merge process will not make any disruptive configuration changes on the
primary fabric. The secondary fabric is merged into the primary fabric.
• Any CHPIDs with local connections in the secondary fabric should be configured offline.
• The merged fabric will retain zone configurations from the primary fabric, so any zone
configurations involving ports on the secondary fabric must be redone after fabric merge.
• If the configuration wizard was used previously, the fabrics they will not merge. This is
because the wizard sets the fabric security policies based on the fabric that is present at
the time. Typically, this happens when a DR site is tested and validated before merging the
fabrics. If this occurs you will get fabric security violation errors and the ports will
automatically disable. To resolve this, keep working through the wizard regardless of any
error messages. Do not bother to set any long distance modes. Re-enable the ports that
were disabled due to a security violation as illustrated, then repeat the process.
• There are no long-distance parameters to configure for IP links. Except for CWDM, most
DWDM equipment provides the required buffer credits Typically, it is only necessary to set
long distance mode when there are direct fibre runs.
• For other considerations and a description of the merge process, refer decussated FICON
fabric merge”
Chapter 30, “FICON Environments” .
11. After fabrics are successfully merged, configure FICON Emulation features as required. Refer
to step 6 .
12. Rezone the fabric as zoning was removed from the secondary fabric that you merged.
13. Configure traffic isolation (TI) zoning. Refer to the information on TI zones under “Planning the
configuration” on page 1234 and the “Traffic Isolation zones” section of Chapter 26, “Zoning” .
14. Clear error counters, which are common during switch configuration, by right-clicking the
switch in the Connectivity Map or Product List and selecting Performance > Clear Counters.
When merging fabrics in production environments, always check with the system administrator
before clearing error counters.
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.
portcfgcreditrecovery --disable slot/port speed