Setting A Proxy Pid; Matching Fabric Parameters - HP AA979A - StorageWorks SAN Switch 2/8V Administrator's Manual

router cost IFLs to another port group (for example ports 8–15). For VEX_Ports, you would use ports in
the range of 16-23 or 24-31.
You can connect multiple EX_Ports or VEX_Ports to the same edge fabric. The EX_Ports can all be on the
same 400 MP Router or 4/256 SAN Director with an B-Series MP Router blade, or they can be on multiple
routers. Multiple EX_Ports create multiple paths for frame routing. Multiple paths can be used in two
different, but compatible, ways:
• Failing over from one path to another
• Using multiple paths in parallel to increase effective data transmission rates
EX_Ports and VEX_Ports, when connected, are assigned different router port costs and traffic will flow only
through the EX_Ports. Routing failover is automatic, but it can result in frames arriving out of order when
frames take different routes. The 400 MP Router and 4/256 SAN Director with an B-Series MP Router
blade can force in-order delivery, although frame delivery is delayed immediately after the path failover.
Source EX_Ports can balance loads across multiple destination EX_Ports attached to the same edge fabric
using exchange IDs from the routed frames as keys to distribute the traffic.

Setting a proxy PID

When a 400 MP Router or 4/256 SAN Director with an B-Series MP Router blade is first configured, the
PIDs for the proxy devices are automatically assigned. Proxy PIDs (as well as phantom domain IDs) persist
across reboots.
The most common situation in which you would set a proxy PID is when you replace a switch. If you
replace the switch and want to continue using the old PID assignments, you can configure it to do so; this
value remains in the system even if the blade is replaced. So you can minimize disruption to the edge
fabrics by setting the proxy PIDs to the same values used with the old hardware.
The fcrProxyConfig command displays or sets the persistent configuration of proxy devices. Used with
slot
the -s option, it can also influence the assignment of the xlate domain port number (which is used to
determine the Area_ID field of the PID) and the Port_ID field. Like the PIDs in a fabric, a proxy PID must be
slot
unique. If the
assigned to devices imported into a fabric, starting at f001. For Proxy IDs projected to a McDATA edge
fabric in McDATA fabric mode, use valid ALPAs (lower 8 bits).
See the fcrProxyConfig command in the Fabric OS Command Reference Manual for more details.
Use the fcrXlateConfig command to display or assign a preferred domain ID to a translate domain.
See the fcrXlateConfig command in the Fabric OS Command Reference Manual for more details.

Matching fabric parameters

By default, EX_Ports and VEX_Ports detect, autonegotiate, and configure the fabric parameters without user
intervention.
You can optionally configure these parameters manually. Execute the configure command on a switch
in the edge fabric to change the fabric parameters of a switch in the edge fabric. Execute the
portCfgEXPort command to change the fabric parameters of an EX_Port on the 400 MP Router or
4/256 SAN Director with a B-Series MP Router blade. If you want to change the fabric parameters of a
VEX_Port, then use the portCfgVEXPort command.
If using the -p option with the portCfgEXPort command, note that the PID mode for the 400 MP Router
or 4/256 SAN Director with an B-Series MP Router blade (the backbone fabric PID mode) and the edge
fabric PID mode do not need to match, but the PID mode for the EX_port or VEX_Port and the edge fabric
to which it is attached must (the -t option disables the Negotiate fabric parameter feature). Otherwise, the
PID mode is autonegotiated. The various edge fabrics may have different PID modes.
Fabric parameter settings must be the same on EX_Ports or VEX_Ports and on the fabrics to which they are
connected: E_D_TOV (error-detect timeout value), R_A_TOV (resource-allocation timeout value), and PID
format. You can set the PID format on an EX_Port when you configure an interfabric link.
The default values for E_D_TOV and R_A_TOV for an EX_Port or VEX_Port match those values on other
switches. Only if you have adjusted these parameters for the fabric do you need to adjust them for an
EX_Port or VEX_Port.
argument results in a duplicate PID, it will be ignored. Proxy PIDs are automatically
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